reno
Active Member
ISO is the sensitivity
the better dslr cameras still produce good quality shots with high iso (still drooling over the fact of the newer slrs with 1600 iso still produce great images)
in general
you'd pick the lowest iso in brightly lit places, so you can keep the quality
once light starts going away, you can't keep the shutter on long enough - as it will blur, so you increase the iso
but as a compromise, you'll bring in extra noise (the more fuzzy it gets)
it's always a trade off
the better dslr cameras still produce good quality shots with high iso (still drooling over the fact of the newer slrs with 1600 iso still produce great images)
in general
you'd pick the lowest iso in brightly lit places, so you can keep the quality
once light starts going away, you can't keep the shutter on long enough - as it will blur, so you increase the iso
but as a compromise, you'll bring in extra noise (the more fuzzy it gets)
it's always a trade off