Author Topic: Saving into two picture styles?  (Read 1630 times)

ItsMeLenny

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Saving into two picture styles?
« on: July 05, 2019, 03:14:57 AM »
Is there a way I can have the picture save on the camera into two different picture styles?
And in particular; two custom picture styles?
(inb4 "just use raw")

edit & explanation:
I want to take the photo in jpeg, and instead of it saving one photo in "neutral" or what not,
I want it to process and save 2 jpegs of the same picture, one in neutral and one in say standard (or custom picture profile).

scrax

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Re: Saving into two picture styles?
« Reply #1 on: July 05, 2019, 05:53:17 AM »
I don't understand the question, probably.
Because you can apply any pic style to raw files with DPP
https://global.canon/en/imaging/picturestyle/file/dpp.html
I'm using ML2.3 for photography with:
EOS 600DML | EOS 400Dplus | EOS 5D MLbeta5- EF 100mm f/2.8 USM Macro  - EF-S 17-85mm f4-5.6 IS USM - EF 70-200mm f/4 L USM - 580EXII - OsX, PS, LR, RawTherapee, LightZone -no video experience-

ItsMeLenny

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Re: Saving into two picture styles?
« Reply #2 on: July 05, 2019, 06:24:19 AM »
I don't understand the question, probably.
Because you can apply any pic style to raw files with DPP
https://global.canon/en/imaging/picturestyle/file/dpp.html
Thanks for answering with exactly what I said not to answer with.

a1ex

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Re: Saving into two picture styles?
« Reply #3 on: July 05, 2019, 09:43:28 AM »
Might be doable, but only if there is a very good reason to do so ;)

The captured image arrives into main RAM first, as 14-bit Bayer (raw) data; from there, it is:
- compressed to LJ92 (for saving as CR2)
- rendered to 8-bit YUV422 (picture style is applied here)
- compressed to plain JPEG (different settings, depending on the destination - standalone JPG output, embedded preview in CR2, low-res thumbnails)

It might be possible to re-render the Bayer image with different settings, but the exact process is not trivial to figure out. Some relevant threads:
https://www.magiclantern.fm/forum/index.php?topic=1915.0
https://www.magiclantern.fm/forum/index.php?topic=18315.0
https://www.magiclantern.fm/forum/index.php?topic=2388.0

Estimated difficulty:
- for me: between a few weeks and a few years of working full time on this topic (90% research, 10% implementation)
- for a Canon engineer: a couple of days or maybe even less.

Good luck!

ItsMeLenny

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Re: Saving into two picture styles?
« Reply #4 on: July 07, 2019, 06:04:18 AM »
Ah thanks very much, I had a slight feeling that it already existed so I just wanted to check, but I guess it doesn't then, I'll check out the links you've posted.