rmpsrpms Posted June 10, 2013 Report Share Posted June 10, 2013 I haven't posted here for a while so I thought I'd post something a bit different... I've been searching for a long time for a nice quality example of this famous Nikon 4x objective. As Mark Goodman states in his review, "this lens is the standard by which all others are compared in this magnification range".You can read Mark's review at:http://coinimaging.com/nikon_4apo.htmlAs a test of this objective I took a picture of a 1955-S RPM#1 from a group of 7 I found in a recent roll search. The objective performed every bit as well as expected. Here is the image:Note that this image is better, but not tremendously better than what can be achieved with a 0.13NA or even 0.10NA objective. Its higher NA (0.2) makes it sharper, but it also means more shots are required for the stack. The image above required 31 shots!! A 0.1NA objective would require half or fewer shots, but each one would be a little less sharp due to the smaller aperture causing diffraction. Quote Link to comment Share on other sites More sharing options...
Corina Posted June 10, 2013 Report Share Posted June 10, 2013 cool error Quote Link to comment Share on other sites More sharing options...
Art1.2 Posted June 10, 2013 Report Share Posted June 10, 2013 Wonderful photograph of a great coin. Quote Link to comment Share on other sites More sharing options...
BullseyeBullion Posted June 11, 2013 Report Share Posted June 11, 2013 Great pic. I really need to upgrade to a better camera. Quote Link to comment Share on other sites More sharing options...
bill Posted June 11, 2013 Report Share Posted June 11, 2013 Beautiful image. Quote Link to comment Share on other sites More sharing options...
cool Posted September 16, 2013 Report Share Posted September 16, 2013 Nice pic. Quote Link to comment Share on other sites More sharing options...
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