Aside from the focal length, are there any other factors I should consider when deciding between the Sigma 30 1.4 and Sigma 50 1.4 for my 40D? Do they offer about the same image quality and sharpness?
Jan 10, 2011 20:45 | #1 Aside from the focal length, are there any other factors I should consider when deciding between the Sigma 30 1.4 and Sigma 50 1.4 for my 40D? Do they offer about the same image quality and sharpness? 5D Mark IV (2) l RP l 70-200mm f/2.8L IS II l Canon 24-105 l Canon 85L 1.4
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m.shalaby Goldmember 3,443 posts Likes: 8 Joined Dec 2009 More info | Jan 10, 2011 20:46 | #2 no difference, just FL
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hieu1004 Goldmember  3,579 posts Likes: 4 Joined Jul 2010 Location: Seattle More info | Jan 10, 2011 20:53 | #3 eaglefan wrote in post #11614331  Aside from the focal length, are there any other factors I should consider when deciding between the Sigma 30 1.4 and Sigma 50 1.4 for my 40D? Do they offer about the same image quality and sharpness? They are pretty much identical (besides FL, weight/size of course). The 50mm is also compatible with FF while the 30mm is not.
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bobbyz Cream of the Crop 20,506 posts Likes: 3479 Joined Nov 2007 Location: Bay Area, CA More info | Jan 10, 2011 20:55 | #4 Sorry to tack on OP's question but is sigma 50mm f1.4 also prone to AF/calibration issues like some folks have with their sigma 30mm f1.4? Fuji XT-1, 18-55mm
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hieu1004 Goldmember 3,579 posts Likes: 4 Joined Jul 2010 Location: Seattle More info | Jan 10, 2011 20:58 | #5 bobbyz wrote in post #11614386 Sorry to tack on OP's question but is sigma 50mm f1.4 also prone to AF/calibration issues like some folks have with their sigma 30mm f1.4? I have 30mm f1.4 for my 1dmk2 and love it but would like to have 50mm option for my 5d. Mine was fine out of the box, as far as the AF. However, I did return one, but it wasn't for AF issues. There was some particle inside the front element that was stuck. I tried to ignore it, but exchanged it because it would affect the resale value.
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