Fotografieweblog

» meer ... fotoblog op dF

Fototechniek

» meer ... uitleg op dF

Hard- en software

» meer ... spul op dF

Trucs en tips

» meer ... fototips op dF

Fotogalerij

» meer ... fotografie op dF

wereldwijd zoeken
buttons

Colofon

digitale Fotografie » news

Canon introduces global shutter CMOS sensor with improved dynamic range

Canon has announced a global shutter CMOS sensor with a re-designed pixel structure aimed at boosting dynamic range. Using global shutter presents a clear benefit for the sensor's videography applications, as it doesn't suffer from the distortion effects that a standard 'progressive scan' sensor does when capturing fast-moving subjects.

However, global shutter designs have tended to offer less dynamic range than their conventional counterparts. Canon says that the sensor's drive system (the way it's read out) increases the amount of light the sensor can capture before overexposing. This is combined with a more efficient pixel structure and 'optimized internal configuration' to reduce noise and increase sensitivity. The result should be improved dynamic range, though it's not clear how this improved performance will compare with traditional chips of the kind that exhibit rolling shutter.

Canon says it will explore use of the chip in measurement and industrial applications, and consider applications in video production. No details of the sensor's size or resolution were given.

Press release:

Canon develops global shutter-equipped CMOS sensor that achieves expanded dynamic range through new drive method

TOKYO, August 31, 2016?Canon Inc. today announced that it has developed a new CMOS sensor equipped with a global shutter function that, because it exposes all of the sensor's pixels at the same time, enables the capture of distortion-free images even when shooting fast-moving objects. Employing a new signal-readout drive system and new pixel structure that significantly expands the full well capacity and reduces noise, the sensor contributes to high-image-quality video capture by making possible the realization of a wide dynamic range.

Distortion-free image capture when shooting fast-moving objects

Standard CMOS sensors make use of the rolling shutter method, which sequentially exposes the pixels one row at a time. Because rolling shutters can create slight discrepancies in signal-readout timing depending on the location of the pixel, images of fast-moving objects may appear distorted and flash photography may result in the occurrence of the flash band phenomenon, in which the upper and lower portions of images display different levels of brightness. Because Canon's newly developed CMOS sensor employs a global shutter, when shooting such fast-moving objects as a rotating propeller or a speeding train, subjects are able to retain their proper form to create distortion-free images. Enabling the confirmation of object shapes with a high degree of accuracy, the sensor offers potential benefits in industrial applications, including as a sensor for use in inspection cameras.

Wide dynamic range realized through new proprietary drive method and pixel structure

When the newly developed CMOS sensor converts light into electrical signals and stores the signal charge in memory, the new drive system achieves a significant expansion in full well capacity. Also, because it employs a structure that efficiently captures light and each pixel incorporates an optimized internal configuration, the sensor makes possible increased sensitivity with reduced noise. The expanded full well capacity, realized through the sensor?s new drive system, and substantial reduction in noise, enabled by the new pixel structure, combine to deliver a wide dynamic range, facilitating the capture of high-image-quality, high-definition footage even when shooting scenes containing large variances in brightness.

Canon will explore various industrial and measurement applications for the newly developed CMOS sensor and consider deploying it in the field of video production for cinema production applications, TV dramas, commercials and more.

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Peak Design adds Range Pouch to Everyday lineup

Peak Design has added the Range Pouch to its lineup of versatile Everyday camera bags. The pouch is designed to carry a lens on a belt, in a bag or on a strap, and is available in three sizes. The smallest is designed for kit and prime lenses, and the large will fit up to a 70-200mm. The pouches pack down flat when not carrying a lens, and the larger models can be configured to fit a couple of smaller lenses stacked on top of each other.

Right now the Range Pouch is available as an add-on when you back Peak Design's current Kickstarter campaign. The small Range Pouch can be added for $29, the medium for $34 and the large for $39. Following the campaign, the small will cost $35, the medium $40 and the large $45.

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Garmin VIRB Ultra 30 4K action cam unveiled with voice control

Garmin has introduced the VIRB Ultra 30, a rugged action camera capable of recording 4K/30fps footage. Despite its small size, Garmin packs a bunch of sensors and features into the camera, including GPS, voice control to start recording, a touchscreen display and a high-sensitivity microphone. The VIRB offers what Garmin calls 3-axis image stabilization, but it's available up to 1440/60p, which leads us to believe it's digital.

In addition to 4K footage, the new VIRB action camera can record 720p/240fps slow motion video and can capture 12 megapixel still images. Content is stored on a microSD card. The touchscreen display works when the camera is enclosed in its waterproof case, as does the microphone, according to Garmin. That waterproof case includes an anti-glare coated and water-repellant lens.

In addition to changing settings via the touchscreen display, the VIRB Ultra 30 supports Sensory TrulyHandsfree voice control. Commands like ?OK Garmin, remember that? for tagging moments and ?OK Garmin, start recording? are supported. Additionally, the camera can be controlled remotely using the VIRB app on a tablet or smartphone. The VIRB app is complemented by the Garmin VIRB Edit desktop software for post-processing.

The Garmin VIRB Ultra 30 is available in the U.S. now for $499, and will be available in the UK for 449 in Q3 2016.

Via: Garmin Blog

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

DxO releases major firmware update and accessories for DxO One camera

DxO has released a significant firmware update and an expanded range of accessories for its DxO One camera. The improvements include remote operation over Wi-Fi, while the accessories include a waterproof case.

The firmware update finally enables the camera's Wi-Fi, making it possible to use it remotely. The camera can either create and ad hoc connection to an iOS device or can join an existing Wi-Fi network.

The Wi-Fi system uses the Apple Lightning connector to establish the communication between the two devices. These ad hoc connections should have a range of 10-15m, depending on how much radio traffic there is. Connections across existing Wi-Fi networks work over a greater range but use a slower transfer protocol.

The firmware update also improves both the camera's battery management and the battery level reporting, meaning you should be able to shoot for longer with the camera and have a clearer idea of how much battery life remains.

Accessories

DxO has also launched a series of accessories that considerably extend the One's capabilities.

These include a footplate/tripod mount, that allows the camera to sit upright and includes both a standard tripod thread and Arca-Swiss-style flanges. These are closer together than usual, though, so it may not be compatible with all Arca-Swiss heads.

There's also a rugged case. This comes with two clip-on backs, one of which provides environmental sealing and allows the continued use of the touchscreen and a second that provides full water proofing (to a depth of 45m). The case includes a hinge attachment, making it compatible with many mounts and accessories designed for GoPros.

With the waterproof back attached, the camera's shooting mode can be changed by holding your hand over the lens for 3 seconds - allowing a degree of control without having to remove the camera from its case.

There's also a set of adapters to allow 30.5mm filters to be clipped onto the front of the camera. This makes it possible to add diopter lenses or optical filters to the camera easily.

The firmware update and associated iOS app will be free. The tripod stand will cost around $24.99/19.99/?24,90, while the 'outdoor case' has a recommended price of $59.99/49.99/?59,90.

Press Release

The DxO ONE award winning camera takes it one step further with two new state-of-the-art features

PARIS and SAN FRANCISCO?August 31, 2016?Camera manufacturer DxO announces major updates to the DxO ONE Miniaturized DSLR-quality Camera for iPhone, including Wi-Fi remote control and a new waterproof Outdoor Shell designed to further extend its elds of use. Upholding their promise to make the camera even better after you?ve bought it, Wi-Fi Remote Control will be available to all existing users free of charge via a forthcoming 2.0 software update. DxO?s accessories ecosystem also introduces an ultra-compact Stand and a snap-on Optical Adapter, enhancing creative possibilities for the DxO ONE which captures pro-quality photos and videos that you can share instantly to Facebook, Instagram, YouTube and more.

DxO?s new Wi-Fi Remote Control implementation is remarkable in that it completely eliminates the cumbersome and altogether frustrating Wi-Fi con guration process that plagues every other Wi-Fi-equipped camera on the market. When attached via DxO?s patented Lightning connector, Apple iOS can seamlessly pass its Wi-Fi authentication credentials from the iPhone to the DxO ONE. In-house or in-of ce, users can take advantage of this unique DxO innovation that lets the camera immediately tap into the Wi-Fi network that your iPhone is already logged onto. And when traveling about, or out in the wilderness, your DxO ONE can just as easily create a direct Wi-Fi connection to your iPhone. By enabling remote connectivity between the DxO ONE camera and your iPhone, photographers are free to explore every conceivable photographic angle, while still having control over every capture setting, and the ability to easily view, edit and share their content to social media sites such as Facebook, Instagram, and YouTube.

?Last year, we revolutionized mobile photography by packing DSLR-quality into a camera design so incredibly small that it could always be available in our pocket,? said DxO CEO and founder, Jrme Mnire. ?And now, thanks to Wi-Fi Remote Control and our new accessories ecosystem, all our users can take the DxO ONE with them absolutely anywhere, without restrictions, and extend their creativity even further.?

The Outdoor Shell, compatible with all existing DxO ONE cameras, is extremely rugged and yet quick and easy to attach. The shell can be equipped with either of two waterproof back doors, one of which is splash proof (IP67), perfect for sailing or walks in the rain. The other is fully submersible and immersion proof to depths of 45m (150 ft) for scuba diving in a reef or just swimming in your pool. The design features a dual clamping system that snaps securely into place to protect your DxO ONE camera from water, dust and shock, while providing access to power switching and multiple capture modes without having to open the shell. Built to stand up to the elements, the Outdoor Shell is made from durable high end polymers and stainless steel. The shell accepts 30.5mm thread optical add-ons, features a 1?4-20 thread for tripod mounting, and can even be attached to popular Action Cam xtures and harnesses. Available in seven exciting colors including yellow, coral, lime, olive, black, white and lagoon, the waterproof Outdoor Shell is the perfect way to protect and personalize your DxO ONE.

The 2.0 software update also introduces Mobile Smart Lighting, a lighter-weight variant of the famed Smart Lighting feature in DxO OpticsPro, which automatically analyzes each scene and applies an intelligent and customizable global tone map?in this instance, to every photo you take with your DxO ONE. The overall effect is similar to having added a ll light to the picture, which dramatically enhances the dynamic range of your images. The automatic 2.0 update also includes signi cant enhancements to battery management and power consumption including an on-demand auto- focus mode similar to that of DSLRs, and an innovative underwater white balance that automatically compensates for the blue cast to achieve a more pleasant rendering in your underwater images.

?It seems every few months the team in Paris automatically updates my DxO ONE with cool new features,? said celebrated motorsports photographer, John Thawley. ?Now, with remote Wi-Fi control I?m totally untethered. Combined with the protective shell, I?m free to place the camera in all sorts of new and discreet scenarios. This means I can capture high resolution images that just weren?t possible before... not with any camera!?

An e-store, accessible right from the DxO ONE app, allows you to easily order any of the new accessories including an ultra-compact Stand that uses an ingenious combination of clamps to let you balance your camera on almost any surface or mount it to a tripod. Also accessible via the e-store is a snap-on Optical Adapter that allows standard ND and creative lters, macro lenses, and hoods to be mounted in front of the lens of your DxO ONE camera. And of course, the accessories store also provides one stop access to the waterproof Outdoor Shell that lets you take your DxO ONE miniaturized camera where no DSLR or smartphone can go.

Pricing & Availability

The DxO ONE Miniaturized DSLR-quality Camera for iPhone and iPad is available now for pre-order at dxo.com and Amazon, and other respected retailers for 399 / 499 ?. First customer availability is expected second half of September.

Also available in the same timeframe from select retailers, as well as via the new in-app e-store, are genuine DxO accessories designed to enhance the DxO ONE user experience. These include the waterproof Outdoor Shell for 49.99 / 59,90 ?, the ultra- compact Stand for 19.99 / 24,90 ?, the snap-on Optical Adapter for 19.99 / 24,90 ?, and a protective quick-draw Zipped Pouch for 15.99 / 19,90 ?.

The DxO ONE 2.0 iOS app and companion Apple Watch app will be made available as free software updates via the iTunes App Store, also available the second half of September. Every DxO ONE user is invited to download DxO Connect for Mac/PC, or on Mac DxO OpticsPro for Photos ? DxO ONE camera only, both of which harness the power of the DxO OpticsPro photo engine to make your best DxO ONE photos look even better.

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Hasselblad True Zoom Moto Mod hands-on preview

At IFA in Berlin, Lenovo has revealed its latest Moto Mod detachable smartphone accessory module: The Hasselblad True Zoom. It's a camera module with a 10x zoom lens, physical shutter button, zoom lever and a Xenon flash. Like previous Moto Mods it attaches directly to a compatible phone ? currently the Moto Z, Moto Z Force and also brand new Moto Z Play will work ? magnetically and via a series of contacts on the back of the device. It offers the following specifications:

  • 12MP 1/2.3" CMOS sensor with 1.55 um pixel size
  • 25-250mm equivalent 10x zoom lens
  • 12MP
  • F3.5-6.5 aperture
  • ISO 100 to 3200
  • 1080p video 
  • 2 built-in microphones 
  • Physical two-stage shutter button and zoom lever
  • Xenon flash
  • 145g
  • Available globally in September for $299/?299

We have had the chance to test a pre-production unit, attached to a Lenovo Moto Z Force, as well as with the new Z Play, for a few days. Read on to find out how we got on.

Operations and ergonomics

The docking process is extremely simple and quick. The Hasselblad True Zoom is literally 'sucked' in place on the back on the smartphone by magnetic force and usable instantly, without the need to restart the device. The process is much quicker and easier than, for example, attaching the LG G5 camera grip, which requires removal of the battery and a restart. It's also easier than pairing the Sony QX or Kodak Wi-Fi camera modules. 

Both smartphone and camera module come with electronic connection pins. Once the two devices get close the camera clips into place by magnetic force.

The module body is made from a solid-feeling plastic material and the rubberized grip makes it comfortable to hold. In terms of overall dimensions, weight and ergonomics the Moto Z Force with the attached True Zoom module feels not too dissimilar to the Samsung Galaxy Camera models, but gives you the option to remove the module when it's not needed. The physical shutter button supports half-pressing for locking exposure and AF and, like the zoom rocker, works just like on a compact camera. There is no noticeable lag, and overall operation is very responsive.  

With its rubberized grip the True Zoom feels comfortable and secure to hold. With an attached smartphone the combo feels similar to the Samsung Galaxy Camera series.

By default the True Zoom works with the standard Moto camera app, which makes things nice and easy for the user, as no adaption to a new user interface is required. More advanced users will appreciate the full manual control over shooting parameters in Manual Mode and the ability to save Raw files with the JPEG images. The final version of the app will come with a range of True Zoom-specific Hasselblad image modes, but those had not been implemented yet on our pre-production test device.

In the settings you select DNG Raw format. The final version of the True Zoom will come with a range of Hasselblad image modes.

You can also use the True Zoom module for capturing images straight from Instagram and similar apps but it appears that at this point manual control and Raw capture are not available in third-party camera apps that focus on photographic control, such as Manual camera or Camera FV-5.

Image Output

The 10x optical zoom is one of the True Zoom?s most obvious advantages over a smartphone camera and covers pretty much all focal lengths needed on a typical vacation or trip. The optical image stabilization works very efficiently and keeps things steady at longer focal lengths. On our pre-production unit sharpness does vary a bit across the zoom range though ? at some settings there is noticeable softness around the edges. 

Wide angle, 25mm equivalent, ISO 100, 1/2000 sec

Tele, 250mm equivalent, ISO 100, 1/320 sec

In good light the True Zoom produces good exposure and consumer-friendly vibrant colors but in terms of pixel-level detail it does not offer any noticeable advantage over most built-in smartphone cameras. Images show the same smearing of finer low-contrast detail, highlight clipping and luminance noise levels at base ISO that you would expect from a smartphone camera. 

 ISO 100, 1/800 sec
 ISO 100, 1/500 sec

In lower light the True Zoom images are again on a similar level to built-in smartphone cameras. Image detail starts suffering as you go up the ISO scale and both luminance and chroma noise are becoming more noticeable. Partly this is caused by the comparatively slower apertures of the lens, especially at the longer end of the zoom range. Thanks to the efficient OIS camera shake is hardly an issue, even at longer focal lengths, but in Auto mode slow shutter speeds in low light can lead to motion blur on moving subjects. Thankfully shutter speeds can be manually increased, as long as you're happy to shoot at higher ISOs.

ISO 560, 1/30 sec
ISO 2500, 1/100 sec, manual exposure mode

The Xenon flash is another big advantage of the True Zoom module. It?s much more powerful than the LED flashes of smartphone cameras and allows for the illumination of subjects farther away from the lens, such as groups of people, and even some of the background. In our testing, exposure was good and we did not see any red-eye effect. In flash mode the camera also keeps the ISO low which makes for decent detail. 

 ISO 200, 1/30 sec, flash

The True Zoom also shoots 1080p video at 30 frames per second. Image quality is again on smartphone level but the module's big bonus is the zoom which, thanks to the very efficient OIS, allows for getting closer to your subject, even when recording handheld. The low light video below shot with the zoom set to approximately 150mm equivalent.

Studio test scene comparison

Below you can see how the Hasselblad True Zoom performs capturing our standard studio test scene, next to the Moto Z Play's built-in camera for comparison. 

Conclusion

The Hasselblad True Zoom is the best smartphone camera add-on I have used so far. Attaching it to the phone is super-easy and quick. When it's not needed, it is swiftly removed and stored away. It feels nice in the hand and the controls work well. The zoom range is very useful and offers a big advantage over the fixed wide-angle lenses in smartphone cameras. The Xenon flash is much more powerful than a smartphone LED and helps keep the ISO down.

Those looking for premium-compact or even DSLR-like image quality will be disappointed, though. Looking at the True Zoom's sensor specification, it is no surprise that pixel-level detail and dynamic range are on very similar levels to built-in smartphone cameras. In terms of image quality, the optical zoom, robust image stabilization and Xenon flash are the module's real advantages.

Currently, the most obvious disadvantage is the fact that you can only use the Hasselblad True Zoom with a compatible smartphone. That said, the Lenovo Moto Z models are attractive devices in their own right and make a nice package with the module. I enjoyed using the True Zoom on a recent short vacation and, as a photographer, I really hope the module will be an economic success for Lenovo and its subdivision Motorola. This would mean that we'd be likely to see more models in this series. A 'Pro' version with shorter zoom range but larger sensor, and maybe a physical control dial, sounds like music to our ears.

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Lenovo announces Hasselblad True Zoom camera module for Moto Z smartphones

Lenovo offers a range of detachable smartphone accessory modules, called Moto Mods, for its Moto Z series smartphones. So far a power pack, a speaker and a mini-projector have been available. Now the company has launched a new addition at IFA in Berlin that is especially interesting to mobile photographers: the Hasselblad True Zoom.

As its name suggests the True Zoom camera module was developed in cooperation with Swedish camera maker Hasselblad, and with its 10x zoom lens and Xenon flash it converts any Moto Z device into a connected travel zoom camera. Like the other Moto Mods, the True Zoom is attached to the smartphone via magnetic force and can be used instantly - no need to restart the device or pair the phone. Communication between the devices takes place via a range of electronic contact pins.

The True Zoom's body is made from a plastic material. Inside, images are captured on a 12MP 1/2.3" CMOS sensor with a 1.55 um pixel size. The zoom lens offers an equivalent range of 25-250mm and a F3.5-6.5 aperture. Optical image stabilization is on board as well, and the module can record 1080p Full-HD video.

Currently compatible smartphone models are the Lenovo Moto Z, Moto Z Force and the just-announced Moto Z Play mid-range phone that comes with a 16MP camera, 5.5" 1080p AMOLED display and a Qualcomm Snapdragon 625 octa-core processor. We have had the chance to test the Hasselblad True Zoom on a Moto Z Force for a few days ? you can read about our experience with the module in our hands-on review.

The Hasselblad True Zoom will ship globally in September and will cost $299/?299, or $249.99 from Verizon in the US.

Lenovo's Moto Mod range includes a power pack, a speaker, a projector and now the new Hasselblad True Zoom camera module.

Hasselblad True Zoom Moto Mod key specifications:

  • 12MP 1/2.3" CMOS sensor with 
  • 25-250mm equivalent 10x zoom lens
  • 12MP
  • F3.5-6.5 aperture
  • ISO 100 to 3200
  • 1080p video
  • 2 built-in microphones
  • Physical two-stage shutter button and zoom lever
  • Xenon flash
  • 145g
lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Lenovo announces Moto Z Play Android smartphone

Lenovo has announced the Moto Z Play smartphone at IFA in Berlin. The new model slots in below the Moto Z Force and Moto Z in Lenovo's current smartphone lineup and, like its sister models, is compatible with the Moto Mod range of detachable accessory modules, including the also newly announced Hasselblad True Zoom camera module.

With a 16MP CMOS sensor, F2.0 aperture, on-sensor phase detection, laser-assisted AF and dual-LED flash the rear camera specification sounds very similar to the Moto G Plus that was announced back in May but, unlike the G Plus, the Moto Z Play is capable of recording 4K video. At the front the new device features a 5MP camera with a 85 degree angle of view and LED-flash.

Android 6.01 is powered by a Qualcomm Snapdragon 625 chipset with  a 2 GHz Octa-Core CPU. The device comes with 3GB of RAM and 32GB of internal storage that can be expanded up to 2TB via a microSD slot. Images can be viewed on a 5.5" 1080p Full-HD Super AMOLED display and a fingerprint reader below the screen provides extra security.

The device body comes with a water repellent nano-coating and a USB Type-C port is used for charging and connection to other devices. Lenovo claims the 3510 mAh battery is good for 50 hours of mixed use, and it also features the company's TurboPower quick-charging which can give you up to 10 hours of usage in only 15 minutes of charging. 

The Moto Z Play will be available worldwide in September for ?499/$408.

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Lomography Lomo?Instant Automat camera launches on Kickstarter

Lomography has launched the Lomo?Instant Automat camera on Kickstarter, where it has already exceeded its $100k funding goal with 34 days remaining in the campaign. The Lomo?Instant Automat is, according to Lomography, an instant camera with two modes: an Automatic Mode that automatically adjusts shutter speed, aperture, and flash output, and Bulb Mode for long exposure shots up to 30 seconds in length.

Lomography describes the Lomo?Instant Automat as ?small, yet mighty,? able to shoot in a variety of situations including low-light environments. The camera features a built-in lens with a focal length equivalent of 35mm, a remote control lens cap, a dedicated exposure compensation button, the ability to enable and disable the flash, support for multiple exposures, and an LED exposure counter to track how much film is remaining.

The camera will be available in four colors ? red, black, white, and yellow ? and is compatible with a wide-angle lens, fisheye lens, ?close-up? lens, and interchangeable color gels. Says Lomography, a ?nifty box? of goodies with things like magnet stickers and photo clips are included with every camera.

The company offers several backing options on its crowdfunding campaign, including a ?super early bird? model in white or black for $96 USD, a ?Kickstarter special? for $112 USD, and a ?super early bird combo? for $115 USD. The company anticipates shipping backers their items starting in December 2016.

Via: Kickstarter

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Canon 5D Mark IV brings dramatic dynamic range improvements to the 5D line

Back when we were briefed by Canon about its update to one of the most popular line of digital SLRs in existence, Canon told us that dynamic range was one of the top concerns of current 5D-series owners. We're happy to report that the 5D Mark IV represents a major leap forward in this regard, and it's thanks to the same move to on-chip analog-to-digital conversion (ADC) that the 1D X II and 80D saw. It's been a long time coming for Canon, as placing the ADCs on the imaging chip itself is a staple of modern image sensor design.

This design ensures less noise is added to the analog signal captured by the sensor by digitizing* as early as possible, resulting in lower read noise, which you can think of as background amplifier hum. The lower 'hum' means its easier to distinguish between captured information and background noise in areas of low signal. In turn, this means more malleable Raw files with more useful information available when you try to brighten shadows, allowing you in turn to more confidently expose high contrast scenes, like the one below, for the highlights.

This Nikon D810 shot was exposed for the highlights by keeping ISO near base. In M mode I dialed in a wide-open aperture and the shutter speed necessary to freeze the action (1/640s). In order to ensure I didn't blow any of the sky, I kept my ISO down at 140, despite a meter reading suggesting ISO 2200 for a 'proper' exposure. Pushing shadows 4 EV in post, while holding back highlights, I was able to tone-map the scene to my desired vision, without tones becoming too noisy. All thanks to a high dynamic range sensor. Photo: Rishi Sanyal

Below we look at just how malleable the 5D Mark IV's Raw files are, and on the next page we'll assess the 'ISO-invariance' of the camera, the property that allowed for the capture of the above image without noise penalty.

Exposure Latitude

One of the most easily understandable ramifications of increased base ISO dynamic range is increased processing latitude; that is, the ability to brighten Raw exposures without drastic noise penalty (there will always be some penalty due to shot noise). This can be particularly useful in dealing with high contrast scenes, which require conventional underexposure to prevent bright tones from clipping to white, with requisite shadow brightening - or tone-mapping - to make dark tones visible on our current dim display technologies.

So in this test we look to see how tolerant of pushing exposure the 5D Mark IV's Raw files are. We've done this by exposing our scene with increasingly lower exposures, then pushing them back to the correct brightness using Adobe Camera Raw. Examining what happens in the shadows allows you to assess the exposure latitude (essentially the dynamic range) of the Raw files.**

The 5D Mark IV shows significant improvements in exposure latitude thanks to its increased dynamic range. After a 5 EV push, it's well ahead of the 5DS which, despite its old sensor design with off-chip analog-to-digital conversion, was already 2/3 EV ahead of the 5D Mark III. That places the 5D IV well ahead of its predecessor, nearly catching up to the excellent Sony a7R II. Despite it's improvements, it's not at the level of the current industry leader, the Nikon D810, though. After a 6 EV push, the 5D Mark IV falls further behind the a7R II and D810, but the improvement over the 5DS is even more dramatic.

Digging a bit deeper: the 5D IV shows improvements over the 5DS with even more moderate 3-4 EV pushes, but especially so when files are pushed 5-6 EV. This means you'll see the advantages of the on-chip ADC in the form of less noise not just with drastic exposure adjustments, but even more moderate ones. Results are about on par with, if not slightly better than, the 1D X II. And while the 5D IV falls just slightly short of the Sony a7R II, the differences are really only visible after fairly extreme pushes.

Differences against the current dynamic range market-leader, the D810, start becoming apparent after even a 3 EV push, and fairly significant after a 6 EV push. The D810 can perform so well because of even lower read noise, and increased sensor capacity for light at ISO 64 that gives its files a nearly medium format-esque quality.

On the next page, we'll look at how ISO-invariant the 5D Mark IV is, and also directly compare the Mark IV to its predecessor, the Mark III.


* Digital signals tend to be more 'protected' or immune to noise than analog signals, because they're binary. It's the same reason CDs (digital) don't exhibit the pops and crackle of records (analog).

** Differences in noise performance in our Exposure Latitude test are caused by both read noise and shot noise, the latter of which is mainly determined by the amount of light the camera has had access to. Therefore, one might argue the results are only directly comparable between cameras of the same sensor size. However, sensor size differences will also be relevant in real-world shooting if you're limited by what shutter speed you can keep steady, so this test also gives you an idea of the amount of processing latitude different formats give when light-limited.

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)

Hasselblad X1D-50c shipments delayed until September 15

Shipment of the Hasselblad X1D-50C has been delayed for a couple of weeks, according to a listing on B&H Photo. The retailer?s product page now shows a shipment start date of September 15, two weeks later than the previously given August 30 date.

Hasselblad's 100MP H6D has also missed its target ship date, though by a much greater margin: announced in April, it's currently listed as unavailable at B&H. Hasselblad announced a trade-up deal for those waiting for the H6D-100c; customers can purchase a 50MP H6D-50c and only pay the difference to trade up for the 100MP back when the H6D-100c becomes available. Earthquake damage to Sony Japan's sensor facilities has been cited as the root cause of that delay.

Via: Mirrorless Rumors

lees verder ...
bron Articles: Digital Photography Review (dpreview.com)



 
advertentie
 
 
 
 
 


Waar bent u ...

Dit is de pagina digitale Fotografie » news. · naar de beginpagina · lees een korte uitleg · archief en sitemap

Zoek op dF

Meest gelezen

Aanraders

Voor beginners

advertentie

Topkortingen & Acties

  • Pabo : 20% Korting op aankopen vanaf € 50
  • Greetz : 25% Korting op alle uitnodigingen met deze code
  • HP : € 40 Korting op HP Pavilion laptops
  • Webprint : 35% Korting op een meerluik op canvas
  • Qurrent : € 55 Korting op 1 Jaar Prijs Zeker contracten
  • Zalando : Kortingscode: 10% Korting met een minimale bestelwaarde van € 150
  • Coolblue : Tot 15% korting op heggenscharen van Wolfgarten
  • Treatwell : 15% Korting op alle behandelingen
  • Albelli : Vereeuwig je herinneringen ▷ 20% Korting op fotoboeken*
  • Vind de meest geweldige bezienswaardigheden Amsterdam
Powered by: REBEL Internet

Recent bijgewerkt

buttons
digitaleFotografie.nl gebruikt cookies om content en advertenties te personaliseren, om u functies voor sociale media aan te kunnen bieden en om ons websiteverkeer te analyseren. We delen ook informatie over uw gebruik van onze site met onze partners voor social media, reclame en analyse. Klik voor meer informatie en / of deze melding sluiten.