I guess this is just sort of a "point of interest," not really useful in my mind, but I googled and found this regarding ISO --
"ISO stands for International Standards Organisation and it refers to the industry norm for sensitivity of emulsion based film, with 100 ISO being not so sensitive (and the standard ISO used by most people) to 1600 ISO which is extremely sensitive to light. "
And just want to say, I'm in the same boat as far as all of this just not sticking in my mind... even though quite a few years ago I had a pretty decent (film) camera and seem to remember having it all down pat! I need to focus more than the camera here...
The Canon camera that I have was a Christmas present several years ago that my husband basically insisted that I needed because I was constantly taking pictures of the flowers and plants and bugs in the garden with our Sony Cybershot... and despite my protestations that I didn't even know how to use a lot of features on the Sony, he was adamant! So now I have this really, really nice camera that is a pain to haul around (definitely doesn't fit in my pocket when I'm in the garden like the Sony) and I've become somewhat paralyzed by the guilt of not using it. (Life must be so simple for single people
)