The ISO setting on the Nikon D3100 adjusts the camera’s sensitivity to light. At a higher ISO, you can use a faster shutter speed or a smaller aperture (higher f-stop number) because less light is needed to expose the image.
New Listing Nikon D3100 14.2MP Digital SLR Camera With Battery (WORKS GREAT) (48) 48 product ratings - Nikon D3100 14.2MP Digital SLR Camera With Battery (WORKS GREAT) $114.99
Nikon's 14.2MP D3100 is a great choice for novices and those on a budget. Reviews. By Matthew Richards. published 30 November 2011. The D3100 is a radical upgrade, based on a brand-new 14.2MP CMOSNikon D3100 DSLR Camera with 18-55mm VR, 55-200mm Zoom Lenses (Black) (Discontinued by Manufacturer) Recommendations Nikon D3100 14.2MP Digital SLR Double-Zoom Lens Kit with 18-55mm and 55-200mm DX Zoom Lenses (Black) (Discontinued by Manufacturer)RTiOXD.