So I've been on vacation for a few days to see family and I decided to take a bunch of pictures yesterday. Today, I'm having trouble focusing on anything. I thought there was something weird with my lens, so I cleaned it, and it's still the same. I asked 4 family members to focus it so it had a nice crisp look, and they all had no problems, but I just can't focus it. It has to be my eyes. Does anyone have any issues with this after shooting a bunch of pictures? Last night I had no problem focusing, but today it sucks. I know I don't have the best eye sight, but I had no problems last night.