Thanks to everybody who has made suggestions. I’m grateful for all your ideas, and it feels good to see how many of you have thought about this and learn your own solutions. Maybe there’s hope for me.
I too have arthritis from a number of broken bones over the years. The one thing that affects me more than anything is changing lenses. I use Nikon N8008s & N90s, & the pain in my thumb is extreme. I have several Olympus XA's also, but they're quite limited. Sorry that I can't offer any solutions to this problem, & reading through the comments I see that I'm quite fortunate because I still do so many things after all.
Smaller vs lighter is a trade off. I find smaller cameras harder to hold and use.
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