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.CR3 to .TIFF Conversion for 90D



I have a 90D and it uses the dreaded .CR3 file format.  I noticed that in the "Settings" tab under "Image Capture" that there is a box to check that says "Create TIFF Image File".  By checking this box, will BYEOS automatically convert the .CR3 to a TIFF?  I ask because I spent money on a program that does this for me as DSS does not recognize the new Canon file format.  This will streamline my work flow.

Thank you.

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BYE uses DCRAW to create TIFF files and since DCRAW does not support CR3 file format BYE will not be able to convert your raw files TIFF files. If you select the option to create the TIFF file I do not believe that there will be a visible error other than no TIFF file will be created.

This has been mentioned with respect to other CR3 cameras, like the EOS Ra. My guess is that as the file format becomes more popular, applications like DSS and BYE will support it. In BYE's case Guylain needs to find an alternative to CDRAW. In another thread, LibRaw was suggested as the possible replacement. Read that thread from the link below:


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CR3 files from Canon and some of the newest NEF formats from Nikon and ARW from Sony are all awaiting the Stable Release of LibRaw 0.20 (now supposedly imminent).  Soon after, BYE and BYN will likely see Updates to include LibRaw support.

However, for AP Imaging purposes, TIFF is not a "Good Thing" as it cannot readily be Calibrated with Darks and Flats.  Neither can JPG files.

The recommended solution is to Convert from CR3 to DNG (which is still RAW non-Debayered data) using the Adobe DNG Converter (Free), and then feed those DNG files to DSS or PixInsight or whichever Program is next in your workflow.

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