So I got a cheap lens (Phoenix 19-35mm f/3.5-5.6) at a thrift store, and also picked up a Tamron 24-80mm f/something (don't recall right now) Was going to keep only one, but would like to do a ...
A 500mm lens for under $200? Believe it. Adorama’s ProOptic 500mm f/6.3 ($160, direct; www.adorama.com) shares all the strengths-and drawbacks- of inexpensive catadioptric lenses. Often called mirror ...
Question: Lensmakers almost always quote the number of elements and groups of elements in their lenses, often with diagrams showing the relative position of the groups. Why? What can I learn from them ...
http://news.cnet.com/8301-11386_3-57613293-76/zeiss-otus-55mm-f1.4-lens-tests-show-unparalleled-sharpness/?part=rss&tag=feed&subj=News-CuttingEdge Get up-to-the ...
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