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The Everyday Sling might just be the perfect pack for not carrying too much gear, combining comfort with Peak Design's signature modern style.
Adobe’s DNG specifications may seem like a rather esoteric and arcane document to go digging around in, if you’ve only got experience of developing pictures, rather than software. However, the latest changes, that allow for ‘corrections and enhancements’ might be of interest, because they give something of an insight into the kinds of processing and corrections that camera manufacturers are applying to their RAW data.
In order to provide a non-proprietary way of storing RAW data, DNG files have to include all the processing instructions necessary to produce a final image the way the camera manufacturer wanted. Consequently, to act as a universal format, the DNG specification has to have the capability to define all the different types of processing that those manufacturers might want to apply to their RAW data to accurately produce a finished image.
So the addition of correction and enhancement parameters (known as ‘opcodes’) into the DNG v1.3 specification gives us some clues about the behind-the-scenes work manufacturers are doing to produce the best possible images from the RAW data their cameras are capturing.
Tom Hogarty, senior product manager at Adobe, has this to say about opcodes on the Lightroom Blog: “’Opcode Lists’ allow complex processing to be moved off the camera hardware, which can have limited processing power, and into the DNG reader, which is often running on more powerful hardware. This also allows processing steps to be specified, such as lens corrections, which ideally should be performed on the image data after it has been demosaiced, while still retaining the advantages of a raw mosaic data format.”
The changes mean that the kinds of distortion correction being applied in to the JPEGs of Micro Four Thirds cameras (for example), which are known to correct for lens distortion and aberrations, can be embedded along with the RAW data so that all DNG compliant software will recognise and consistently apply these corrections.
Among other things, the parameters defined in the latest specification allow not only for the correction of geometric distortion in rectilinear lenses (using 4th degree polynomial corrections that can correct complex distortions), but also the remapping of essentially spherical projections (fisheye lenses for example) to a rectilinear image. Lateral chromatic aberrations and vignetting are also accounted for.
However, the available corrections are not simply limited to lens corrections - there are also parameters such as ‘TrimBounds’ that would allow the edges to be trimmed-off during development processing – which would be useful in processing images from cameras that use different crops from the sensor to provide final images in different aspect ratios. Parameters for addressing pattern noise have also been included.
Another new parameter is ‘GainMap,’ which allows the use of a ‘map’ image that defines which areas of an image should have additional ‘gain’ applied to them. This would allow the inclusion, alongside the RAW data, of a map that defines the areas brightened by the kinds of localised dynamic range compression techniques such as DRO, D-Lighting and Shadow Adjustment technology that are applied selectively across images. This would mean the effect of these features would still be available when processing RAW files.
In addition to the new parameters that appear as opcodes, the latest DNG v1.3 gains several new options for a tag that helps define the colour filter array pattern. These 'CFALayout' values, combined with some of the new opcode parameters would appear to make it possible to describe an interleaved sensor design with different exposure values in different rows or columns. This would potentially allow the correct demosaicing and rendering of RAW data from sensors with unusual layouts or exposure modes.
We’re sure that further analysis from the more technical end of the dpreview community will reveal more of what the new DNG specification allows. However, it should be remembered that these changes merely allow processing parameters to be stored in DNG files, they don’t demand that all DNG converters automatically apply them.
Jun 22, 2012
Jun 22, 2012
Jun 21, 2012
Jun 21, 2012
When the Fujifilm X-T2 arrived, it was more than just a modest upgrade to the already impressive X-T1. While the new X-T3 hasn't changed the overall design of the camera, this model is way more than an upgrade; rather, it's a quantum leap.
The Movie Maker is a compact, motorized slider designed for phones, action cams and small mirrorless cameras. We think it's a fun little kit and a good value proposition for the cost, provided you can work around a few of its weak points.
Nikon's Z7 is the first camera to use the all-new Z-mount, the company's first new full-frame mount since 1959. We've put together our first impressions based on quality shooting time with a pre-production camera - check out what we've found.
What's the best camera for a parent? The best cameras for shooting kids and family must have fast autofocus, good low-light image quality and great video. In this buying guide we've rounded-up several great cameras for parents, and recommended the best.
What's the best camera for shooting landscapes? High resolution, weather-sealed bodies and wide dynamic range are all important. In this buying guide we've rounded-up several great cameras for shooting landscapes, and recommended the best.
What’s the best camera costing over $2000? The best high-end camera costing more than $2000 should have plenty of resolution, exceptional build quality, good 4K video capture and top-notch autofocus for advanced and professional users. In this buying guide we’ve rounded up all the current interchangeable lens cameras costing over $2000 and recommended the best.
|The Lone Photographer by ed rader|
from My Best Photo of the Week
|Neighbourhood Watch by Stevie Boy Blue|
from Zoo trip ~ Cute...
Cosina has announced its eighth lens designed specifically for Sony's E-mount system. The Voigtlander 21mm F3.5 lens is due out October 2018.
Sony has taken the wraps off of its new 24mm F1.4 GM full-frame lens, which the company claims is the lightest in its class. Despite its fast aperture, the 24mm F1.4 is remarkably light, weighing just 445 grams (15.7 ounces). The lens will set you back $1400 when it ships next month.
In this episode of DPReview TV we take a look at Sony's brand new 24mm F1.4 GM lens, a desirable focal length for many photographers. How does it perform? Chris and Jordan give us their first impressions.
We've had a little time to shoot with Sony's new wide/fast prime, both close to home and on the water in San Francisco. Check out our initial sample images.
Fujifilm released a firmware upgrade for its X-T3 mirrorless camera that addresses issues with distortion compensation and the mechanical lock on SD cards.
The app's algorithms have been trained using using 200 million cropping data points from real photographers.
Thanks to a software update, the Loupedeck+ editing console can now be used for video editing.
British photographic engineer MTF Services is claiming the world’s first third-party lens adapters for the new Nikon Z system with a collection of four units designed to allow cinema lenses to be mounted on the mirrorless full frame bodies.
Think Tank Photo has updated its line of heavy-duty rain covers and introduced a new, compact version for emergency situations.
The X-T3 is our first opportunity to analyze what's likely to be Fujifilm's next generation image sensor. Take a look at how it performs next to the competition in our studio test scene.
Canon's new normal is seriously sharp wide open. After shooting with it for a few days, we've prepared a gallery of real-world sample images.
Nikon will cease offering Brazil-based customer service and technical support, though the company stresses that it will still offer technical assistance and warranty repairs for valid warranties.
Two years ago, CatLABS of JP announced a plan to save Packfilm from the dead. Now, it's announced it's giving up its efforts to better focus its resources elsewhere.
The GoPro Fusion is designed to make it easy to capture 360-degree video and stills. We took it out recently on a typically hot Seattle summer day to see what it can do.
We've got our hands on a full-production Nikon Z7 camera and have updated our gallery with additional samples.
A new Kickstarter campaign seeks funding for Chroma Chrono, a programmable RGB camera flash that emits multiple colors during long exposures.
Think Tank Photo has launched a new lineup of six dual-access, water-resistant protective lens cases it calls Lens Case Duo.
Canon and Nikon finally entered the full-frame mirrorless market this summer with the brand-new RF and Z mounts. Now that we've had some time with the cameras, we wanted to revisit our earlier predictions and take stock.
The devices' camera specs look pretty much identical to last year's iPhone X but under the hood a number of important improvements have been made.
Blackmagic Design has announced the public beta of its new Blackmagic RAW video codec. The company says the new format combines the benefits of shooting Raw video with the ease of use and smaller file sizes usually associated with non-Raw video files.
Serif, the company behind the Affinity suite, has announced the latest update for its mobile Photoshop competitor Affinity Photo for iPad.
The Atomos Ninja V external video recorder and monitor will be ready to ship at the end of this month. The 5.2in Ninja V is designed to provide a smaller option, while still offering many of the features of the larger 7-inch models.
Having shot with the camera, spoken to Canon and read the tea leaves, here's what DPR Technical Editor Richard Butler thinks the EOS R tells us about Canon and the RF's mount's future.
After last week's teaser, lighting manufacturer Profoto has announced its 'small big' new product. The B10 is designed to be used as studio flash head but in a very small body, and has a powerful continuous light source for videographers as well.
Konseen has launched Photo Studio, a new light box tent large enough to photograph people, as well as objects.
Seagate has introduced new high-capacity hard drives for Network Attached Storage (NAS) devices: the 14TB IronWolf and 14TB IronWolf Pro HDDs.
The case was first announced earlier this year as a Kickstarter campaign and comes with a range of features aimed at iPhone photographers.
Manfrotto has introduced a new two-in-one tripod to its Befree lineup. Called the Befree 2N1, this new addition is both a tripod and monopod in one and is available with both of Manfrotto's locking mechanisms.
This new high dynamic range editing software comes with an AI-powered Quantum HDR Engine for improved photo merging.