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Re: A Brief Comparison of the Canon 300 f2.8 L and the Sigma 120-300 F2.8
Erich, One of the facts I was trying to ascertain, was whether there was any significant difference in exposure with each of the three lenses tested - all shot at ISO 200 f5.6 1/125th of a sec The pixel data I circled in black, above the doors in each image, measured 209,208,209 with the Canon lens, 214,214,209 with the… -
A Brief Comparison of the Canon 300 f2.8 L and the Sigma 120-300 F2.8
Greenjk has a thread in the Sports Gallery ( http://www.dgrin.com/showthread.php?t=45249 ) asking about the Sigma 120-300 f2.8 and john asked if they were really the same focal length. I told him to give me a couple days to answer his questions. So here we go. First some data Canon 300mm f2.8 L IS Minimum Focusing Distance…
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