http://www.dphotojournal.com/sigma-70-300mm-f4-56-apo-dg-macro/ Mon, 30 Jan 2012 18:32:28 +0000 hourly 1 http://wordpress.org/?v=3.3 http://www.dphotojournal.com/sigma-70-300mm-f4-56-apo-dg-macro/comment-page-1/#comment-234908 Clive Worboys Sat, 07 Aug 2010 08:31:04 +0000 http://www.dphotojournal.com/sigma-70-300mm-f4-56-apo-dg-macro/#comment-234908 What do I have to do to get a Sigma lens that doesn't have optical flaws? My current 70-300mm APO is the 2nd within 12 years (updated to be compatible with my APS-C DSLR)& guess what, this b---ers as soft as sh--t on the lhs of the frame from approx. 150mm (equiv.)upwards as well!!! Stopping down appears to make very little difference. On the plus side, performance is flawless at the shorter focal lengths, but that's hardly the point. I am now of the opinion that it's a case of "you get what you pay for," & the only way to be sure of consistent quality is to pay a lot more & invest in, say, a Canon L-Series lens. SIGMA, PLEASE NOTE!!!!!! What do I have to do to get a Sigma lens that doesn’t have optical flaws? My current 70-300mm APO is the 2nd within 12 years (updated to be compatible with my APS-C DSLR)& guess what, this b—ers as soft as sh–t on the lhs of the frame from approx. 150mm (equiv.)upwards as well!!! Stopping down appears to make very little difference. On the plus side, performance is flawless at the shorter focal lengths, but that’s hardly the point. I am now of the opinion that it’s a case of “you get what you pay for,” & the only way to be sure of consistent quality is to pay a lot more & invest in, say, a Canon L-Series lens. SIGMA, PLEASE NOTE!!!!!!

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