Hi guys,
I'm still trying to wrap my head around these topics.
I have a crappy digital camera (Canon IXUS 400). If I'm out in broad daylight, an ISO setting of 400 (max) seems to make the images too bright (over exposed???). So I set the ISO setting lower, and the picture looks good. In dark situations, I have to set the ISO setting to the max, 400, because otherwise I get a blurry image. This is, I think, due to the fact I can't stay still long enough for the exposure time required...yes?
I guess what I'm asking is, in what situations should the ISO setting be high, and in what situations should it be low? Same goes for the exposure setting. (Which you can only change a fraction in my camera

)
Thanks.