Autofocus points
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Autofocus points
I am new to DSLRs but, I did have a mega zoom that let me play with aperture and shutter speed.
With the T1i I am able to select between 9 separate auto focus points or let the camera chose what ones to use. When I let the camera do it it's able to chose say 3 points at once but, if I want to chose an auto focus point it seems to limit me to just one. I am wondering if their is some way to select more than one or what technique I would use to focus on several points at once in manual mode (manual meaning the selection of the auto focus points not manually focusing the lens).
With the T1i I am able to select between 9 separate auto focus points or let the camera chose what ones to use. When I let the camera do it it's able to chose say 3 points at once but, if I want to chose an auto focus point it seems to limit me to just one. I am wondering if their is some way to select more than one or what technique I would use to focus on several points at once in manual mode (manual meaning the selection of the auto focus points not manually focusing the lens).
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I made the same jump. Went from SX20 to a T2i. Personally, I set the AF to center. I focus on my subject (half push of shutter) and then move the camera to frame my shot how I want it. It forces me to take my time and think about my shot instead of just firing off.
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From: Hacienda Heights, CA
For the T1i, I don't believe you can manually select multiple focus points. As you already figured out, you can select only one of the 9 at a time. This is normal. Leaving it in the automatically AF mode where all points are selected, the camera will typically select the closest object in the viewfinder.
I believe the 7D, 1D, and 1DS are the only cameras in the canon lineup that will alllow you to have a zone coverage area.
B.R.I.C.K....using the center point and then using the focus-recomposing technique is generally fine for lenses with a narrow apperture. But when working with lenses that have a wide apperture (F2.0, 1.4, 1.2), the the minor movement of focus recomposing will throw off your intended focus area and give you a perceived misfocus. Because of this, I tend to move my focus point to where I want it to be instead of relying on center focus point and then using the focus-recompose technique.
I believe the 7D, 1D, and 1DS are the only cameras in the canon lineup that will alllow you to have a zone coverage area.
B.R.I.C.K....using the center point and then using the focus-recomposing technique is generally fine for lenses with a narrow apperture. But when working with lenses that have a wide apperture (F2.0, 1.4, 1.2), the the minor movement of focus recomposing will throw off your intended focus area and give you a perceived misfocus. Because of this, I tend to move my focus point to where I want it to be instead of relying on center focus point and then using the focus-recompose technique.
Joined: Sep 2009
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That's interesting to learn. My Tamron 28-75 has never given me a problem, but since its only f2.8 that would mean its not big enough to throw focus off. I better keep that in mind when shooting with the 50 1.8!
(not trying to jack your thread hariku821)
(not trying to jack your thread hariku821)
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From: On yo puter screen
Originally Posted by B.R.I.C.K.,Sep 22 2010, 09:20 PM
That's interesting to learn. My Tamron 28-75 has never given me a problem, but since its only f2.8 that would mean its not big enough to throw focus off.
