yogestee "my posts can be a little colourful"  More info | Jul 26, 2009 06:11 | #1 I finally managed to get my new 50D out and about to get some shots.. The damn thing is front focusing with my Sigma EX 50-150mm F/2.8.. With my 20D and 350D it focuses spot on Jurgen
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tzalman Fatal attraction.  13,497 posts Likes: 213 Joined Apr 2005 Location: Gesher Haziv, Israel More info | Jul 26, 2009 07:49 | #2 Did you test at several focal lengths? My Sigma 150-500 front focuses slightly at 150 but is spot on from 400 to 500. Elie / אלי
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No,, not as yet it was getting dark.. I tested wide open at 150mm at around 5 metres.. Jurgen
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lungdoc Goldmember  2,101 posts Likes: 1 Joined May 2006 Location: St. Catharines, Ontario Canada More info | Jul 26, 2009 10:19 | #4 This lens is reputed to often have front focusing especially at shorter target distances. Is it the later or earlier version? Be curious to know if this is easily fixed with the micro-adjust as otherwise this is an appealing lens for crop cameras. How do you like it otherwise? Mark
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dengar Senior Member 987 posts Joined Mar 2005 More info | Jul 26, 2009 15:27 | #5 tzalman wrote in post #8345163  Did you test at several focal lensgths? My Sigma 150-500 front focuses slightly at 150 but is spot on from 400 to 500. I read in a few places that this is actually a design flaw from Sigma. I bought the Tokina instead, they tried to go to 150mm as well but was not able to achieve good IQ throughout the range so they scaled it back to 135mm.
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tzalman Fatal attraction. 13,497 posts Likes: 213 Joined Apr 2005 Location: Gesher Haziv, Israel More info | Jul 26, 2009 15:45 | #6 dengar wrote in post #8346800 I read in a few places that this is actually a design flaw from Sigma. I bought the Tokina instead, they tried to go to 150mm as well but was not able to achieve good IQ throughout the range so they scaled it back to 135mm. I think you misread. My lens starts at 150 and goes to 500 mm. Elie / אלי
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dengar Senior Member 987 posts Joined Mar 2005 More info | Jul 26, 2009 16:21 | #7 tzalman wrote in post #8346871 I think you misread. My lens starts at 150 and goes to 500 mm. yeah, sorry about that...I meant the 50-150mm
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Jul 26, 2009 19:59 | #8 lungdoc wrote in post #8345580 This lens is reputed to often have front focusing especially at shorter target distances. Is it the later or earlier version? Be curious to know if this is easily fixed with the micro-adjust as otherwise this is an appealing lens for crop cameras. How do you like it otherwise? It's the Version I.. Funnily it focuses spot on with my 20D and 350D..  HOSTED PHOTO please log in to view hosted photos in full size.  HOSTED PHOTO please log in to view hosted photos in full size. Jurgen
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