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<p>[QUOTE=&quot;dougsmit, post: 2455445, member: 19463&quot;]I used to collect vintage optics and still have many though will never again use a piece of film (I&#039;m a big fan of digital).&nbsp; There are two features that are important for selecting old optics.&nbsp; First is color correction.&nbsp; To accomplish this a lens must have at least two elements of properly selected glass types.&nbsp; Most better lenses had six elements or more.&nbsp; The other is anti reflection coating.&nbsp; This invention allowed more complex lens designs since the internal reflections of uncoated lenses made some three element lenses better in some ways than other more complex designs.&nbsp; </p><p><br /></p><p>Before buying my first dSLR with interchangeable lenses, I used a 1960&#039;s vintage xerox copy lens as an accessory close up lens om by (now antique) point and shoot digital camera.&nbsp; The lens had great sharpness and coating and worked very well.&nbsp; Most people in that time did close ups with one element accessory diopter lenses that added horrible color fringing to the images.&nbsp; Back in the day of Black and White photography, color fringing was less a problem since you could minimize it by using a small aperture.&nbsp; My image below shows how much difference this made in 2003.&nbsp; Buying a camera capable of close focus without accessories made this sort of problem go away for most purposes. </p><p><img src="http://www.forumancientcoins.com/dougsmith/chroma.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><img src="http://www.forumancientcoins.com/dougsmith/coincamrig.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><img src="http://www.forumancientcoins.com/dougsmith/b02346.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><a href="http://www.forumancientcoins.com/dougsmith/ph2003.html" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.forumancientcoins.com/dougsmith/ph2003.html" rel="nofollow">http://www.forumancientcoins.com/dougsmith/ph2003.html</a></p><p>For small images for online use, my 2003 images were as good as my best of 2016 but enlargements of 20x30&quot; size show we have come a long way since then.&nbsp; Good images using film cameras were not quite as easy as today&#039;s digitals.&nbsp; Between the two we compromised principles and accepted lower quality because it was just so much easier.&nbsp; Today, I&#039;m happier with my digital images than I am with my view camera cutfilm results from 50 years ago (which are fading fast in boxes in the closet).[/QUOTE]</p><p><br /></p>

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