FUJIFILM DBP for GX680 RAF support

[wtanmdt]

I recently received a Fujifilm DBP for GX680 digital back. When I converted the raw file to JPG file, I got strange output as below image. It seems like RawTherapee does not recognize the file.
I have uploaded a RAF raw file and a JPG file both saved by the digital back at:
http://www.weldpass.com/upload/Fujifilm-DBP.zip

Thanks,

Wen

[agriggio]

@wtanmdt would it be possible to submit this to http://raw.pixls.us if you haven't done that already? thanks!

[wtanmdt]

@agriggio Just submitted. Many thanks for the advice.

[wtanmdt]

Here is a picture taken on the color target of X-Rite ColorChecker Passport:

http://www.weldpass.com/upload/DSCF0002.RAF

[Beep6581]

Hi @wtanmdt

The above photo was shot on an overcast winter's day on a reflective yellow surface, and it's quite small in the frame.

Please follow these shooting guidelines and release both daylight + tungsten shots into the public domain for inclusion in RT:
http://rawpedia.rawtherapee.com/How_to_create_DCP_color_profiles#Shooting_the_Color_Target

[wtanmdt]

Hi @Beep6581
I just retake the photos as below:

http://www.weldpass.com/upload/Fujifilm-DBP-for-GX680-daylight.RAF
http://www.weldpass.com/upload/Fujifilm-DBP-for-GX680-tungsten.RAF

Thanks.

[Beep6581]

Thank you for the shots @wtanmdt , they look good, unfortunately neither RawTherapee nor Adobe DNG Converter can open them yet.

[wtanmdt]

I wish it will be supported in future RawTherapee release.
Many thanks for your work @Beep6581

[wtanmdt]

Sorry that I delete the snapshot since I do not have the permission from Alex to publish it before testing.

[wtanmdt]

One thing to note:
The raw converted resolution is 5430 x 3845.
If I shoot JPG format, the resolution is up to 7648 x 5408.

And the color profile needs improvement since the color target shot was not utilized.

[Beep6581]

I tried to find the LibRaw commit which introduces this change, but it's not in the repo:
https://github.com/LibRaw/LibRaw/commits/master

I found this post from Alex from 2015:

We do not push 'work in progress' code to github, but use own private repo for it. Only big pieces, known to work (in our RawDigger/FastRawViewer) are pushed.

[wtanmdt]

@Beep6581

Alex told me that RawDigger is difficult to support this sensor.

[wtanmdt]

@Beep6581
Just wanted to let you know that LibRaw Release 0.19.0 has supported this RAW file as found in dcraw_common.cpp

[wheropl]

@wtanmdt
could I get a picture of the Fujifilm digital back you're using? and possibly another contact method ~ wanted to ask you some questions about it...

[heckflosse]

As this is a very rare camera back (also having non square sensels) I am not willing to spend time on fixing all issues with this camera back in RT. I could provide very basic support, but then Auto-Matched Tonecurve segfaults, which would require further work and analysis. I intend to close the issue as unsupported except someone is willing to create a pr to fix the issues

[wtanmdt]

@wheropl here you are.

[wheropl]

@wtanmdt thank you very much -i guess i'll have try to find one up for sale now (or two cuz one of my friends also told me he'd gladly get one if the price was reasonable (in his case compared to newer solutions) )... i wanted to confirm that it's actually possible to get one / find one out in the wild .. out of curiosity if you can remember how much did you pay for yours?

[wtanmdt]

@wheropl I paid more than $4000 to get it. And I used an agent to bid and ship it from Yahoo Auction at Japan. This digital back is very rare.

[wheropl]

ok thx - will look out and try to snatch one if it pops up

[wtanmdt]

@wheropl FYI, PaintShop Pro 2020 and Affinity Photo are all supporting RAW file of this digital back now.

[bronekkozka]

Hi there, I'm interested in talking to you about the fuji digital back, please contact me bronek@kozka.com or instagram :
https://www.instagram.com/kozka/