Showing results for 
Show  only  | Search instead for 
Did you mean: 

Best Compatibility File Format MacOS


Hello! I'm looking to change my normal flow and potentially switch from saving my raw files in .CR3 to another format. I am after best compatibility from MacOS perspective (e.g. previewing in finder with space, printing CR3, no corruption, etc) and Affinity/Lightroom perspective.

My question is does anyone on MacOS purposely save their raws with a format other that .CR3 and if so, why?

More background, I'm shooting on a Canon RP and use a M2 MacBook Pro which is "Apple Silicon". I've experienced slow preview times for CR3s and occasional image corruption after only previewing. Often when importing to photos, applying edits, and saving will corruption happen. If any of these issues could be avoided with another file format I'm interested to hear!



Your only other options are jpeg or a third party DNG converter, but I don't know if DNG raw support is any better.


I believe the camera saves images in only two formats, RAW and JPG.

"The right mouse button is your friend."


What software are you using? If you are using Canon DPP4 it is not compatible with M2. Converting to TIFF probably won’t resolve the problem. And DPP4 won’t recognize DNG. 

You mentioned Lightroom. Since LrC doesn’t alter the original file are you seeing corruption w/LrC?

John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, Pixma TR8620a, LR Classic

Lightroom CC (stronger on, trying to wean off of), Affinity Photo (weaker on, actively learning). Would use DPP if available on Mac. I'd even use photos app if it didn't corrupt .cr3 files.

08/18/2023: Canon EOS R5 C training series is released.

07/31/2023: New firmware updates are available.

CR-N700 - Version 1.2.0

CR-N500 - Version 1.3.0

CR-N300 - Version 1.3.0

CR-X300 - Version 1.1.0

06/30/2023: New firmware version is available for EOS-R5 C

05/31/2023: New firmware updates are available.

EOS R6 Mark II - Version 1.1.2

EOS R6 - Version 1.8.2

EOS R7 - Version 1.3.1

05/18/2023: New firmware updates are available.

EOS Rebel T100 - Version 1.1.0

EOS Rebel T7 - Version 1.2.0

EOS 5D Mark IV - Version 1.4.0

EOS 6D Mark II - Version 1.2.0

PowerShot Elph 360HS - Version

PowerShot SX420 IS - Version

PowerShot 620 HS - Version

PowerShot SX720 HS - Version

PowerShot G1X Mark III - Version

PowerShot G7X Mark II - Version

PowerShot G9X Mark II - Version


04/20/2023: New firmware version 1.4.1 is available for EOS R3

03/30/2023: New firmware updates are available.

EOS R5 - Version 1.8.1

EOS 1DX Mark III- Version 1.7.1

Speedlite EL-1 - Version 1.0.2

03/30/2023: Product Advisory for EF50 F1.2 L USM

03/30/2023: Product Advisory for EOS R10

02/24/2023: We've updated Share Your Photos

2/07/2023: New product announcements!

EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM
01/09/2023: Help ensure your autofocus is properly aligned with a Canon Precision Alignment
01/03/2023: Welcome to CES 2023!
12/08/2022: New firmware version is available for EOS C70
12/07/2022: New firmware version 1.7.0 is available for EOS R5