I don't know whether the IrfanView RAW display runs under the heading of Plugins and whether it has been implemented/maintained by Irfan himself - I'll post it here anyway.
The most recent generation of .CR2-files (e.g. from the 80D model) doesn't display properly, while the embedded preview shows all right.
I've tried IV 4.38 & IV 4.42. Also WinXP and Win7.
Obviously Canon has changed the format, but sadly not the file extension.
I downloaded the most recent EDSDK.dll from the Canon website and replaced the one in the IV installation, but this didn't help.
Has anyone made this work or would Irfan be the right person to upgrade the IV plugin?
I can upload a sample file to dropbox if that helps.
The above display was under the settings "Try to load CRW/CR2 using Canon-DLLs" disabled!
When I enable this option I get the error msg "Decode Error! Can't start Canon CR2 DLLs."