I have a light tent setup with 3 lights and a 30D + Tamron 17-50.
Recently tried shooting at a High ISO speed of like 800.
I know the higher the ISO the noiser the pics get, however I shot the same shot at 100 and 800 with the same setup (aperture and shutter adjusted accordingly) but I can't tell the difference between the 2 images.
Can anyone enlighten me on this? I'm not sure how does ISOs affect photos for product shoots.