Adobe expands DNG format with inclusion of smaller, Lossy DNG option
Alongside its ACR and Lightroom updates, Adobe has extended the specifications of the DNG format, including the creation of a more compact, Lossy DNG option. The format has also been extended to respect in-camera cropping and allow for the inclusion of full HDR data and the non-image areas around merged panoramas. We spoke to Lightroom Product Manager, Tom Hogarty, about the changes made in v1.4 and the reasons behind them.
Probably the biggest change is the inclusion of a lossy DNG format, which Hogarty pitches as being a middle ground between JPEG and full Raw. 'If you look at the output of a [Canon EOS] 5D Mark II, its Raw files are about 25MB, while its JPEGs are about 6MB. The difference in quality and capability between the two is significant enough that many photographers are happy to put up with the additional demands of the larger files.'
'Lossy DNG allows something in-between the two in terms of size but retains the flexibility in terms of adjusting White Balance and preserving detail,' he explains: 'For example, the out-takes from a wedding shoot, that the photographer is unlikely to ever be able to sell or make any money from. This gives them a way of reducing the amount of storage space they need, but they still have the file if they do ever need it.'
'It's based on standard JPEG compression. What's lost is some of the range of the adjustments you can make - if a file is four or five stops underexposed, you'll find it's not quite as flexible as the full file. You can still do a lot, though and it's only in extreme case that you might notice.' he says.
'Lossy DNG allows something in-between Raw and JPEG in terms of size but retains the flexibility in terms of adjusting White Balance and preserving detail'
The amount of compression in the Lossy DNG is fixed, yielding files that are typically around a third of the size of Standard DNGs. There's also an option to reduce the pixel size of the file when you create a Lossy DNG, giving what Adobe is calling DNG Proxies. These make it possible to create more readily portable and shareable files with Raw-like processing flexibility.
Beyond this, the v1.4 specifications also add the ability to record details of a crop that should be applied to the Raw data (such as a camera shooting its non-native aspect ratio, but capturing the whole sensor's data). This crop can later be over-ridden (and option available using the 'DNG recover edges' plugin for Lightroom), but means the starting point for processing is the one you selected at the time of shooting.
In addition, DNG v1.4 files can include 32-bit floating-point data, allowing them to retain all the information from multiple Raw files combined as part of an HDR process. 32-bit floating-point data allows the retention of hundreds of stops-worth of dynamic range information. Another change that allows the data from multiple files to be combined in a single DNG is the ability to include undefined (or transparent) pixels, such as the non-image areas around a merger panorama.
Both changes come from Adobe looking forward, Hogarty says: 'It's where the industry is going. No cameras or software yet offer this, but we can imagine them wanting to.' And this coincides with Adobe's continued efforts to see DNG accepted as an industry standard - 'we talk to a lot of manufacturers and other software makers to find out what they want - we take a lot of feedback and look to maintain an open dialogue on the directions DNG should develop in.'
Oct 5, 2015
Sep 25, 2015
Sep 30, 2015
Aug 18, 2015
|Patrick Finds Inner Peace by ecastellon|
from Your best photo of the week!
|Forks by Kukla|
from Arranged everyday objects
A court ruling our of Newton, Massachusetts has set an important legal precedent for drone pilots: federal drone laws will now trump local drone regulations in situations where the two are in conflict.
Photographer Mathieu Stern has put together another interesting vintage lens shootout. One model, three lenses, three locations.
From landscapes to motocross and white water kayaking to a wedding, exactly what can't the D850 do?
Calumet UK and Wex Photographic, two of the biggest photography retailers in the United Kingdom, are going to officially merge tomorrow.
macOS High Sierra came out today, but if you use a Wacom tablet you need to wait a few weeks before you upgrade. According to Wacom, they won't have a compatible driver ready for you until "late October."
Do you think a $3,000 Canon 80D video rig can compete with an $80,000+ Arri Alexa setup? Well it can't, but check out this video anyway to see how the rigs compare.
Seven simple rules to make sure you get the most out of your next photography outing.
Vitec, the company that owns popular accessory maker Manfrotto, has just acquired JOBY and Lowepro for a cool $10.3 million in cash. The acquisition adds JOBY and Lowepro to Vitec's already sizable collection of camera gear brands.
A master drone pilot has captured one of the most incredible (and highly illegal) drone videos we've ever seen by flying around, inside, onto, and under a moving train.
Intel just debuted their 8th generation desktop CPUs, and the lineup packs a performance boost for 'content creators' that photo and video editors might be intrigued by.
Canon is developing a 'Free Viewpoint Video System' that will turn real life sports games and events into immersive 3D interactive experiences. It's video game-like camera control IRL.
A veteran photojournalist, Rick Wilking secured a spot in the path of totality for the August solar eclipse. While things didn't quite pan out as predicted, an unexpected subject in the sky and a quick reaction made for a once-in-a-lifetime shot.
The new iZugar 3.25mm F2.5 super fisheye lens offers an insane 220-degree angle of view. That means it can basically see behind itself... good luck keeping your feet out of the shot.
You'll laugh, you'll cry, you'll remember that time you took a picture of the frozen pizza baking directions.
A Craigslist poster has discovered the worst possible way to photograph a car: taking pictures of pictures displayed on a cracked and scratched up smartphone screen.
With the iPhone X coming out soon, the title probably won't last, but the iPhone 8 Plus is officially the best smartphone camera DxOMark has ever tested, and the iPhone 8 is second.
Kodak's new Facebook Messenger chatbot is trying to bring back the 'Kodak Moment' by digging up your old social media photos and trying to sell you prints and custom coffee mugs.
Affinity Photo for iPad was touted as "the first full blown, truly professional photo editing tool to make its way onto the Apple tablet." This update makes it that much more convenient.
Yashica has released a new teaser video, and this one claims they'll be releasing an "unprecedented camera" in October on Kickstarter. Ready... set... speculate!
Storage solutions company Synology has just released its very first 6-bay NAS tower. Combined with the DX1215 expansion units, it can hold and control up to thirty drives.
We're always expanding our collection of product overview content, and we've just added videos for the Canon EOS 6D Mark II, the EOS Rebel SL2 and EOS M6.
The venerable Canon PowerShot G1 was announced seventeen years ago this week, marking the start of a line of enthusiast-focused compacts that's still alive and kicking.
Super macro photographer Can Tuncer captured these incredible close-ups of a single peacock feather using a special setup and three different microscope lenses.
After successfully crowdfunding the Biotar 75mm F1.5, Oprema Jena is at it again. This time they're bringing back the Biotar 58mm F2: the world's only lens with a 17-blade aperture.
Adobe's move to a subscription model is treating it very well indeed. The company has posted record revenue for the second quarter in a row, hauling in a mind-boggling $1.84 billion.
More details have emerged about the potential sale of Blackstone's 45% stake in iconic camera brand Leica.
Popular mobile editing app Snapseed just got a major update that includes a new interface and 11 new presets for both Android and iOS, as well as adding the Perspective tool to the iOS version.
It might sound like a strange idea, but taking macro photos of boiling water can actually result in some really cool photographs. A good photo experiment for a rainy day.
The database was created to "break with the narrow lens through which history… has been recorded" by equipping those who commission photography with "the resources to discover photographers of color available for assignments.
Lensbaby has released two new optics for their special "optic swap system." The Lensbaby Sweet 80 Optic gives you that trademark sweet spot of focus, while the Creative Bokeh optic gives you 9 different drop in aperture plate options to play with.