Re: Cleaning camera lens
Long long ago, when I was using an SLR (non-digital), a Canon T70, I noticed a tiny insect moving across the screen as I was using it.
It wasn't in the lens or on the mirror - I checked, but must have been around the pentaprism.
There was nothing I could do about it. Like you, I wasn't going to risk damaging the camera by trying to take it apart.
Luckily, it later seemed to have buggered off, or died somewhere within the camera!
I still have that camera, by the way, but films have gone out of fashion now and are very expensive compared to using digital photography. I now only use my smartphone, which provides surprisingly good pictures if you don't blow them up, of course.
EDIT: Sorry. It is a T90. Anyone want to buy it?