All About Photographic Lenses. Specifications, comparison, reviews, MTF-charts for lenses by Canon, Nikon, Sony, Pentax, Olympus, Sigma, Tamron, Carl Zeiss, etc.
Hi to all; I have a question about this lens; has someone used this for astrophotography and checked its coma? If so may he comment on that? I have the possibility to buy one but I need to check this aspect which is very important for astro; thanks however
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