User Activity

I had seen in another post about a firmware update for the EF 100-400mm f/4.5-5.6L IS II USM (which I discovered  the previous 1.0.6 version on mine). I hope this isn't a dumb question but can I do the update via an RF to EF adapter on my R5 or R6ii?...
I was updating my MyCanon account and deleting the lenses that I no longer own. I had no problem deleting others but there's one lens (an EF 100mm f/2.8 L macro) that I can't figure out how to delete--unlike the other two lenses I deleted, there's no...
I am one of those people who likes to use a protective filter on my lenses, especially for a lens with a hood that doesn't offer much protection, like the RF 15-35. So, do I need an ultra-thin filter (vs. regular thickness) for my 15-35 in order to a...
Since some of Canon's RF lenses are slower than most typical EF lenses and I know it is said that that's not an issue since the mirrorless camera sensors are better able to handle higher ISOs but I have a question about that. Am I misinformed in thin...
A friend asked me this question and I decided to ask the forum because I don't have this problem. We live in an area of the US that has a hot, humid atmosphere much of the year, and she likes to keep her air conditioning on about 65-70 degrees. She r...