FloridaCamera Member  194 posts Joined Dec 2005 Location: Winter Haven, Florida More info | Jul 23, 2007 22:00 | #1 Just arrived today!!!! YEAH!!! A good sharp copy, I am pretty happy. I bought it used, about a year old. No instruction manual, unfortunately. My only question, can the focus be safely turned by hand when it is in auto mode or do I need to set the selector to manual? I have had Sigmas that go each way? Thanks all!
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TeamSpeed 01010100 01010011  More info | Jul 23, 2007 22:24 | #2 Nope, you can adjust focus while it is in AF mode. Enjoy, it is a wonderful lens, I almost miss mine, but the 100-400 with a TC makes up for it! Past Equipment | My Personal Gallery
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LightRules Return of the Jedi  9,911 posts Likes: 5 Joined Jun 2005 More info | Jul 23, 2007 22:41 | #3 Your Bigma has a ring HSM motor along with full time manual capability. So you can fine-tune your focus after AF lock simply by turning the focus ring. Enjoy.
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Big thanks guys! That was what I was hoping for
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MikeI Goldmember  2,074 posts Likes: 1 Joined Dec 2006 Location: NorCal More info | Jul 24, 2007 03:55 | #5 Enjoy it....it's big and bulky, but the range is incredible and the IQ can be great. Doubleshot Photography
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LotsToLearn Goldmember 2,290 posts Joined Mar 2007 Location: GTA, Canada More info | Jul 24, 2007 09:01 | #6 Of course that applies when you're in one shot... you don't want to be fighting against servo focus mode.
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TeamSpeed 01010100 01010011 More info | Jul 24, 2007 09:07 | #7 LotsToLearn wrote in post #3601894  Of course that applies when you're in one shot... you don't want to be fighting against servo focus mode.  Enjoy! It's a very useful versatile lens. I think the intent is you set the focus using AF, then micro adjust it, then take the shot. This would assume you have set the custom function to assign focus to the AE button, so that you have more control over when the camera focuses in regards to when you actually hit the shutter button. Past Equipment | My Personal Gallery
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LotsToLearn Goldmember 2,290 posts Joined Mar 2007 Location: GTA, Canada More info | Jul 24, 2007 10:06 | #8 TeamSpeed wrote in post #3601924 I think the intent is you set the focus using AF, then micro adjust it, then take the shot. This would assume you have set the custom function to assign focus to the AE button, so that you have more control over when the camera focuses in regards to when you actually hit the shutter button. 'The intent'? The OP didn't bring up custom function settings so by going with defaults, what I said is accurate, is it not? You would be fighting AI Servo if you try to FTM unless you're in one shot focus mode.
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