Would anyone know if the canon 100mm-400mm loses AF when used with a 1.4 or 2x tc
Thanks
theduck Member 67 posts Joined Jun 2009 More info | Jul 02, 2011 14:28 | #1 Would anyone know if the canon 100mm-400mm loses AF when used with a 1.4 or 2x tc
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GregoryF Goldmember  2,336 posts Likes: 13 Joined Jul 2010 Location: Bella Vista, AR More info | Jul 02, 2011 14:38 | #2 Could not tell you for sure about 1.4 tc, but with the 2x tc you will lose it. 6D, 5D, 7Dii, Eos R and too many lenses, flashes and aux. gear to list!
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gjl711 Wait.. you can't unkill your own kill.  57,733 posts Likes: 4065 Joined Aug 2006 Location: Deep in the heart of Texas More info | Jul 02, 2011 14:42 | #3 It depends on what body. Any non 1D body will loose AF with either unless you pull the tape trick and tape up a few pins. On the 1D the 1.4 will not loose focus but I believe it will with the 2x. Not sure why, but call me JJ.
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yourdoinitwrong Goldmember  2,394 posts Joined Apr 2009 Location: Indiana More info | I believe only the 1D series will still AF with lenses slower than f/5.6. I think they go to f/8. Wish I owned one to tell you for sure! 5D4 w/BG-E20, 24-105 f/4L, 70-200 f/2.8L IS II, 35 f/1.4L, 85 f/1.8, 100 f/2.8L IS Macro, Sigma 50 f/1.4
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Jul 02, 2011 14:43 | #5 thanks for that.
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