I did not install a "plugin" my rawtherapee 5.8 is "normal" and opens those cr3 > https://www.photographyblog.com/previews...s_r_photos (scroll down to "Sample Raw images")
I can edit them without any problem.
as you can see I increased the contrast
If you have problem
You convert them to other formats in the Canon Digital Photo Professional also known a DPP (Mac and Windows only), TIFF - PNG, DNG?, or so
all DSLR Canon owners have it or can access to ti (maybe a CD/DVD like I had 10 years ago)
you can download it online for free as well > https://www.canon-europe.com/support/con...ional.html
That's a nice software (especially its black and white setting using colors' sliders that I recall well), and if I recall it does batch process to export
I can edit them without any problem.
as you can see I increased the contrast
If you have problem
You convert them to other formats in the Canon Digital Photo Professional also known a DPP (Mac and Windows only), TIFF - PNG, DNG?, or so
all DSLR Canon owners have it or can access to ti (maybe a CD/DVD like I had 10 years ago)
you can download it online for free as well > https://www.canon-europe.com/support/con...ional.html
That's a nice software (especially its black and white setting using colors' sliders that I recall well), and if I recall it does batch process to export