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Message: <blockquote data-quote="Bob Blaylock" data-source="post: 431752" data-attributes="member: 16749">The odd focus is intentional.  It's an effect that that particular lens produces at wider apertures, and I intentionally used it that way to get this effect.  Notice that the middle of the picture is in sharp focus, getting softer the farther out from the middle.  I could have stopped the lens down tighter, and got a picture that was more sharp overall, or just used a different lens.  I wanted this effect.  See <a href="http://nikonites.com/education/25527-aperture-depth_of_field-relationship-vivitar-85-205mm-f3-8-tele-zoom.html" target="_blank">http://nikonites.com/education/25527-aperture-depth_of_field-relationship-vivitar-85-205mm-f3-8-tele-zoom.html</a> for a more complete explanation of this lens and its odd characteristics.  Also intentional, is the very shallow depth-of-field, which, of course, is an expected characteristic of a long lens used at a relatively close range.  If you look again, you'll see that the text on the lens itself is in sharp focus, the camera body, perhaps an inch behind, is a bit softer, and the edges are showing just a bit of the distortion that is a characteristic of this lens toward the wider side of its aperture range.  Oddly, even though it really isn't usably resolved, if I let my eyes and my brain relax in just the right way while I look at this picture, I can read the number “1.4” displayed in the little window just up and right of the last “n” in “Nikon”, indicating that the lens is properly coupled and recognized by the camera as having a maximum aperture of ƒ/1.4.  If I try to look directly at it, and focus on it, it turns into an unreadable blur.</blockquote>

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