If you have a new camera which is on the list, supported in LR6 you can:
- You can upgrade to LR6 using the link below by clicking Buy and changing Full to Upgrade.
- Or you can convert CR2 files to Adobe Raw (DNG) and the DNG files will work in LR5
- Use Canon DPP on the disk with your camera and convert to tiff
my Camera is a CANON EOS 760D ( Europe - France)
Yes, its support with the latest update of Lightroom 6.3, As you are using Lightroom 5 you upgrade to Lightroom 6.3
Else, you can use the DNG Converter 9.3 to convert the Raw images to DNG and use it with Lightroom 5.
Hope that helps.