Same for Canon CR2. If the file is created with the .CR2 extension, the thumbnail is created automatically. If the file is created with the .cr2 extension (image/x-canon-cr2), no thumbnail.
Same for Canon CR2. If the file is created with the .CR2 extension, the thumbnail is created automatically. If the file is created with the .cr2 extension (image/ x-canon- cr2), no thumbnail.