Following on from our look at the new correction parameters added into the latest DNG specifications, senior product manager and writer of Adobe’s Lightroom blog, Tom Hogarty, spoke to us about how these correction parameters were chosen and developed:
‘We came up with our own ideas about the kinds of sensor processing and correction factors that might need to be included, then shopped them around various manufacturers to come up with additional suggestions for Opcodes that should be included in the latest specifications. The result is a combination of things that are already being done and some more forward-looking capabilities - things that nobody is using right now.’
‘This process isn’t new,’ he explained: ‘we went through this when we were coming up with the changes we made in the specifications for v1.2. We were aware that the colour model we were using was coming up short for some manufacturers, so we’d come up with a model and speak to a range camera makers to see what they were doing. That ended up turning into the camera profiles.’
However, there’s not a hard line between Adobe’s thinking and manufacturer’s needs, he said: ‘Through our camera profiling work we constantly see what’s going on with sensors and image processing, so you can’t really make the distinction between what we think is needed and what manufacturers are doing, because the two are inseparable.’
‘I’ve heard a lot of people say that these have been brought in for this camera or that specific case but all of these things are valuable across a range of cameras - they can benefit everything from phone cameras to medium format digital backs. The end goal is to ensure the photographer gets the best possible image quality – there’s nothing nefarious going on.’
Nothing about the inclusion of this information in the DNG files compels anyone to make use of it, either. ‘We’ll go ahead and respect these Opcodes,’ he says: ‘but ultimately they are optional.’
Hogarty says he doesn’t see this need to update the specification as a barrier to the DNG format being taken-on as an ISO standard: ‘That’s not a process that happens overnight. We figured that, while the ball is in our court, it made sense to take input from the industry to move the format forward.’
|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.