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05/18/2005 10:48:55 AM · #1 |
Compact cameras (like my FZ-20) zoom with an internal motor, while DSLR lenses can only be zoomed in/out manually with the ring, right?
Also, on DSLR's you can switch between manual FOCUS and autofocus(if available), so when you get lazy you can let the camera focus for you, right?
One last thing, a lense' aperture controls 2 things: how much light enters, and the DOF? For example F/10 provides a larger DOF but less light then F/3? |
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05/18/2005 10:51:16 AM · #2 |
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05/18/2005 11:13:26 AM · #3 |
With focussing, it is more hte other way around: DSLRs have autofocus, which you can turn off if you need to take control in difficult lighting conditions. The autofocus is usually more accurate than manual focus, and you do not have the option of inserting a manual focus "matte" into the viewfinder of most DSLRs (the old fashioned bisected circle in circle with fuzzy bits that you used to get in old film SLRs that were designed to help you get the focus right).
Some P&S have manual focus as an option, though it is controlled by electronic buttons usually.
on your last point, the aperture controls the DoF, but I think of it as more of a side-effect that with a larger DoF/narrower aperture comes less light than as a secondary control.
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