Perfect fit for the D3100's next to it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif...(the box next to it is the exact size of a D3100...can't really tell, but there's like 1/16" of clearance, perfect).