Where specifically are the AF sensors located? I may try and clean them. I do a lot of manual focusing, but I'd like to be able to AF more times than not for some situations.
Mar 15, 2007 13:04 | #16 Where specifically are the AF sensors located? I may try and clean them. I do a lot of manual focusing, but I'd like to be able to AF more times than not for some situations. EOS R, RF50L , RF28-70L, 5D Mark IV, 16-35LII, 70-200 2.8L II, 24-70 2.8L II, 100-400L II, 600ex-RT
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Jon Cream of the Crop  69,628 posts Likes: 227 Joined Jun 2004 Location: Bethesda, MD USA More info | Mar 15, 2007 13:40 | #17 They're on the bottom of the mirror box. Use the same precautions you'd use cleaning the main sensor or a lens. Jon
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StewartR "your nose is too big"  4,269 posts Joined Jun 2006 Location: Maidenhead, UK More info | Mar 15, 2007 16:18 | #18 I've never had any problems with the AF on my 350D (=XT). The other night in London I took a picture of a sundial inscribed in the pavement; it was so dark that I could hardly see the thing myself (ISO100, 30 secs @ f/8 I think) but the AF locked on just fine. I'll dig out the picture when I have a moment. www.LensesForHire.co.uk
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StewartR "your nose is too big" 4,269 posts Joined Jun 2006 Location: Maidenhead, UK More info | Mar 15, 2007 16:53 | #19 OK, here it is. I was right about the EXIF: 30 secs at f/8, ISO 100. It was so dark that I couldn't even see that I wasn't lined up straight!
www.LensesForHire.co.uk
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Mar 15, 2007 17:25 | #20 Great. Figures that my warranty is expired now too. EOS R, RF50L , RF28-70L, 5D Mark IV, 16-35LII, 70-200 2.8L II, 24-70 2.8L II, 100-400L II, 600ex-RT
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Mar 16, 2007 15:14 | #21 jaymrobinson wrote in post #2816730  I don't know about the other two lenses, but the AF on the 50mm 1.8 is notoriously bad, I find that mine hunts around quite a bit too. Are you talking about the 50mm f/1.8 MK1 or MK2? I have an older MK1 and have had no problems. Tim
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I'm going to try the Rocket Blower on the sensor and AF sensors to try and clean them off.
