I was helping a friend shoot a wedding using a borrowed EOS R5 and using lithium AAs. I noticed the flash unit getting hot to the touch so I swapped out the batteries with some alkalines. After that, the flash would occasionally overexpose the subjec...
Neither my Canon EFS 17-85 nor my Canon EF 50 1.4 will auto-focus in any mode but A+. I've tried all the other modes. Fully charged battery...all other functions seem to work...
