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My old Nikkor lenses
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PostPosted: Tue Sep 14, 2010 7:16 am    Post subject: Reply with quote

This is Nikkor 105/2.5 Ai-S focused at 1 meter and shot wide open. No vignetting control applied (this is full frame). Sharpening is low, set to 3 on a scale from 0 to 9. RAW conversion to JPEG with Nikon Capture NX 2. ISO 200 f/2.5 1/200s, stabilized against floor when exposed.

The "shadow" on the upper edge of the grey area in the first photo is printed on the book - it is not lens-induced.

This is 100% crop of detail I focused on, the horizontal line. As you can see from the horizontal line, I missed focus a little as the left part of that line is sharper than the right. This is because camera is not exactly 90 degrees to book cover, and depth of field in this shot is only 1mm in this case


This is 100% crop of off-center detail


This is link to JPEG in original size
http://www.flickr.com/photos/mureena/4988889653/sizes/l/

On full frame, with 105mm at f/2.5 and 1m focusing distance total depth of field is about 1 or 2 millimeters. Very difficult to get larger areas into perfect focus.


PostPosted: Sat Sep 18, 2010 10:04 am    Post subject: Reply with quote

I made some experiments this morning in the garden:

Nikkor 35 f2 1/100 on tripod focused with live view.



Here's the crop



PostPosted: Sat Sep 18, 2010 10:05 am    Post subject: Reply with quote

This is the 105 Ai-S f2.5 1/100 on tripod focused with live view



Here's the crop



PostPosted: Sat Sep 18, 2010 10:06 am    Post subject: Reply with quote

again the 105 f2.5



and the crop



PostPosted: Sat Sep 18, 2010 10:07 am    Post subject: Reply with quote

Again the 105 f2.5 TA



and the crop



PostPosted: Sun Sep 19, 2010 12:05 pm    Post subject: Reply with quote

Again the nikkor 35 f2



PostPosted: Sun Sep 19, 2010 1:25 pm    Post subject: Reply with quote

This last one look gorgeous.