>I am thick skinned and have enjoyed all the ribbing about >RTfreeM. I get to laugh everytime I open the thread and >another responder says RTFM. Truly. >I doubt few on this site have read as many pages about the >D7000 and related cameras and accessories as I have. (I >happened to get a GrabBox of aftermarket digital Nikon books >from KEH on Nikons', D300, CLS, others by multiple authors and >even including the Nikonians series) > >Trust me, I am well read.
. . . and I believe you, but apparently not well-read enough to know that a close-up at f/1.8 is going to provide a depth of field so shallow that any concern about D7000 focus accuracy is irrelevant. Shoot the same engine block and spark plug at f/6.3, then compare the two photos. What other comparsion is needed? This has already been suggested, and I think you should try it. I predict you'll discover that when you perform that simple test (using some other subject if you like) it will demonstrate how detailed and sharp your D7000 really is and at the same time demonstrate clearly the effect that aperture has on depth of field.