Joe F.N. wrote:
Old tigger explained it correctly.
"your camera probably metered a slightly different spot"
That slight difference will change your ISO if set on Auto ISO. If hand held, consider yourself lucky the pictures are as sharp as they are. Handholding at 1/25" usually produces OOF pictures unless you're very steady and your lens has very good image stabilization.
your reply. Do use use Auto ISO are Manual?