Using a Canon 5D Mk2 with a 17-40mm f/4L lens.
Everything seems to work just fine, except no matter how i shoot, the EXIF-data will show 40mm as the used focal length, even if I know the image is taken at 17mm. Can this affect the photos in some other manner, except from acting up in Lightroom by giving me false information? (All the other information seems to be correct, ISO, Shutter speed etc).
Is there anything I can do to solve this without sending it back to canon? (I still got warranty for the lens).
Thankful for any kind of guidance!