Photoshop: Black & White Fuji "RAF" raw files display in color within Bridge and Photoshop CS5

  • 1
  • Problem
  • Updated 7 years ago
  • Not a Problem
  • (Edited)
I am using Photoshop CS5 and version 6.6 of the Raw Converter. I have a Fuji x100 which produces RAW images in their proprietary "RAF" format. The v6.6 does a great job reading these files except I have found a small glitch when converting these RAF (Fuji RAW format) files to DNG's.

The cmaera has the ability to shoot in B&W, but when I import the files into Bridge, as DNG's, they show in color, and not B&W! If I import them in their native "RAF" format, they show as B&W, but when I open them in Camera Raw within Bridge, they show up in color!
I think this may be a bug, and wanted to let someone know so they could check it out and see what's happening.
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Roger Kane

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Posted 7 years ago

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Chris Cox

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That's because the RAW file is in color. The file contains Fuji proprietary (aka undocumented) metadata that tell's Fuji's code to convert it to black and white when Fuji software reads the file -- but other RAW processors can't see that instruction.

This is not a bug. This is just your camera maker trying to "add value" by using undocumented bits in their file format instead of working with third parties to use standards or document their file format.
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Roger Kane

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Chris, thanks so much for your quick reply!

It's my understanding that RAW files have no color themselves, but are simply numerical values of luminosity for the three color filters. As such, I'm not sure I agree with your assessment here.

My Fuji x100 has a film simulation mode for B&W with various filters (either red,yellow, or green). It would seem that the RAW images produced should not contain any color data that could even form a color image.

What I am still thinking is that Adobe's file conversion parameters are not interpreting the Fuji raw (.RAF) information correctly.

I admit that this is only my suspicion since as I really do not know how these conversions actually take place. The conversion of the RAF files to DNG format also produces the same thing...with the images showing up in Adobe Bridge having color previews. Also, they are in color when opening the DNG files in Camera Raw within Bridge.

Interestingly, this issue arose after I updated the x100's firmware to verison 1.20 which Fuji just released a few days ago!

Hmmm...maybe this is a Fuij problem with an incompatibility with the Adobe v6.6 DNG converter for Fuji's raw (.RAF) file format.

Any more ideas?
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Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Hi Roger,

Chris's explanation is correct. The proprietary Fuji metadata to tell Photoshop how to process the file in black & white isn't accessible to Camera Raw.

If you want the file to be Black & White, simply apply a Camera Raw preset to make it black & white.
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Roger Kane

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Jeff,

OK, I understand. You did not address one of my questions however...and that was if this is something I should pursue with Fuji since everything seemed to work OK previously, but after I did the the most recent firmware update (v1.20) to the x100, is when the problem started.

What do you think?
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Chris Cox

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Yes, you should let Fuji know that this is important, and that they should share more with the Adobe ACR team so we can support Fuji's raw files.