Answered: How to convert compressed Fuji RAW files to uncompressed?

sluggy_warrior wrote:

eric333 wrote:

Greybeard2017 wrote:

eric333 wrote:

but... is there a way to decompress a compressed.raf file into an uncompressed .raf file?

Not a .dng, just an unzipped form if itself.

I have to believe a compressed .raf uses some form of rar or zip algorithm. And as it’s lossless there must be a way to unzip it.

Presumably so - but its not the entire file that is compressed - just the CFA raw data within the file - that complicates things a bit

That makes sense. The camera writes out the header portion of the file then engages the compression on the cfa data since the compression method is (likely) tweaked to work only with the cfa data anyway.

And I’m thinking the compression can’t be too complicated because the camera has to do this all in real time.

If you're comfortable with coding, all the details are available in the rawspeed library:

https://github.com/darktable-org/rawspeed/blob/f383f62eda0d22f53ea1b09c42348d63b5c915ac/src/librawspeed/decoders/RafDecoder.cpp

https://github.com/darktable-org/rawspeed/blob/f383f62eda0d22f53ea1b09c42348d63b5c915ac/src/librawspeed/decompressors/FujiDecompressor.cpp

However, I think converting from compressed to uncompressed RAF is a wrong direction. If an application doesn't support compressed RAF, update the application, or switch to a different one. Why waste storage with double file size?

Hi,

I'm totally new to this & I know little. Sorry I jump around a bit in my concerns

Purchased X-T3 some months back. I took photos in RAW & chose compressed by mistake...Lunar Eclipse ;-(  . Now my finepix studio wont download the RAF files. The first download I did would. They were in Fine. What a pain it has been. Any help on that would be greatly appreciated. FPS does open them  from the windows file but as in windows 10 photos I get what  may be  connected to X-Trans demosaic  algorithims ...I think. It goes bright with lots of noise and spots of red green & blue if I recall correctly.

My question to this thread is which DIFFERENT application do you suggest? Do you mean free or paid?

Thank you for any help

I downloaded Raw X it wont let me use profile but I will youtube that. I have come from Nikon D70s & D800. Fuji  seems hard work!