DJI Mavic, Air and Mini Drones
Friendly, Helpful & Knowledgeable Community
Join Us Now

DNG - is it affected by sharpening settings?

gnirtS

Well-Known Member
Joined
Apr 29, 2017
Messages
3,353
Reactions
2,501
Has anyone done tests to see if the DNG raw image recorded by the Mavic is affected by the sharpening or noise reduction settings in the same way as video?
Obviously being raw it SHOULD be but its already been shown the Mavic does process the DNG image in some cases such as D-log being selected when it shouldn't. (BUG: Strange camera behavior (Testing D-log and jpg/dng))

Just wondering how RAW the DNG file actually is. If anyone has tested if NR settings are cutting in or not it'd be nice to know. Otherwise i'll try to find time to set up my own test.
 
DNG File is a digital negative. It will create a high res copy of the image and all the settings are easily adjustable. That's the easiest way I can put it. So to answer your question Yes!
 
Surely a DNG file is supposed to be "as is" off the sensor with none of the processing (at least thats what they are on every other camera). It shouldn't be applying any form of NR, settings or profile to it. It does appear to have a bug where it applies settings if the profile is set to d-log but unsure whether this applies to all.
If it does apply to all its a serious flaw as far as photography is concerned.
 
  • Like
Reactions: Xclone
Bad form to reply to own posts but i did the test so might help someone else.

The DNG file is not affected by sharpening settings regardless what profile is selected. Its just hugely underexposed (and not RAW) when D-log is selected (bug).
 
Bad form to reply to own posts but i did the test so might help someone else.

The DNG file is not affected by sharpening settings regardless what profile is selected. Its just hugely underexposed (and not RAW) when D-log is selected (bug).

What? Nevermind. Without examples of what you're talking about it's a fruitless conversation no?
 
No need for examples unless anyone wants to see identical images 6 times over. Quite simply the DNG isn't affected by sharpening or NR so the only bug is the DNG being affected by D-log being selected which is already documented elsewhere.
In other words, you actually do get a RAW file in everything except d-log.
 
  • Like
Reactions: edmatney
The DNG format isn't actually RAW as a strictly from-the-sensor format.
It is a wrapper format developed by Adobe that contains the actual RAW image in a standardized format.
Adobe created the format as a way to standardize RAW files with their products since they have to create or tweak their import engine for every new camera.
One of the important things to note is that the DNG format can *also* contain the original actual RAW image. It isn't used very often because it doubles the file size. Finally there is room for metadata including IPTC (copyright and other info), EXIF (image data like size, colorspace, etc),CIE coordinates (GPS data) and JPEG which is used for embedded preview images.
There is a provision for apps to store this metadata externally in the form of XMP files commonly known as "sidecar" files but most imaging equipment that delivers DNG files bake it into the file itself.
The internal "RAW" format is typically stored in what's called a "linear DNG" format and is typically post processed with whatever RAW converter is used - meaning in fact white balance and other adjustments can be applied at the time the file is saved and documented in the metadata.
So the short story is maybe DJI does apply some or all image settings to the RAW file and the preview but we don't know the particulars. Just that it IS possible they do so. The good news is it's somewhat transparent in that it uses the metadata to document the settings so they can be further adjusted. This is why serious photographers NEVER have their cameras output only JPEG images - raw has all the original information at the time of capture to extract the best from the image with proper adjustments.
Clear as mud, right?
DJI is to be commended for using the DNG format - it shows they are serious about supporting the professionals.
 
Lycus Tech Mavic Air 3 Case

DJI Drone Deals

New Threads

Forum statistics

Threads
132,739
Messages
1,576,515
Members
161,450
Latest member
OnTopAffiliates