Digital capture technology is discrete, and not the same as film..
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Understanding the various optical aberrations and behaviors..
Very compact ultra wide angle..
Sigma’s fast high performance wide angle..
Sigma’s fast high performance normal lens..
Sigma’s best portrait lens..
Outstanding build and optical quality in a medium tele..
Ultra high performance in an extreme wild wide angle lens..
Brilliant imaging, even wide open, but with a few quirks. (Review in progress) .
Ultra high performance apochromatic normal lens, first in the Otus line..
Manual focus moderate wide angle for full-frame mirrorless..
Autofocus portrait lens for Sony full-frame mirrorless..
Normal lens for Sony NEX or Fujifilm X..