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02/13/2004 08:23:46 PM · #1 |
I've been researching DSLRs for quite some time now and I was wondering about two things: mirror lockup and ISO settings.
1. I don't recall using mirror lockup way back with my X-700 so I have no idea what that does other than what it implies (locking the mirror).
2. Why do so many, if not all, DSLRs start their ISO range at 200 vs 50 or even 100? Even my DSC-F717 starts at 100.
I'd like to make the jump to a DSLR but I'm so confused by all the choices. |
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02/13/2004 08:41:08 PM · #2 |
Originally posted by MrAkamai:
I've been researching DSLRs for quite some time now and I was wondering about two things: mirror lockup and ISO settings.
1. I don't recall using mirror lockup way back with my X-700 so I have no idea what that does other than what it implies (locking the mirror).
2. Why do so many, if not all, DSLRs start their ISO range at 200 vs 50 or even 100? Even my DSC-F717 starts at 100.
I'd like to make the jump to a DSLR but I'm so confused by all the choices. |
Larger sensor means larger phototransistors (diodes) and even if set at ISO 200 there is no visible noise on the photo.
At 800 or 1600 ISO you get visible ,But still less than your camera at 200 ISO. |
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02/13/2004 08:52:46 PM · #3 |
Mirror lockup is used where any vibration at all might cause too much shake, such as when using a very long lens and slow shutter speed. Typically, first actuation of shutter release flips up the mirror, you wait for the vibrations to damp out, then second time trips the shutter. Eliminates vibration from mirror slapping up.
Not all DSLRs start at 200. The Canon 10D and 300D both have ISO 100. True, at ISO 200 there is very little visible noise, but there are times when lower sensitivity is needed, e.g. keeping shutter speed down in bright lighting.
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02/21/2004 06:21:47 PM · #4 |
| Thanks for the information! Now the tough choice of which camera is all that is left. :) |
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02/21/2004 06:37:37 PM · #5 |
Originally posted by MrAkamai:
Thanks for the information! Now the tough choice of which camera is all that is left. :) |
Heh, Heh, if money is NO object, the ultimate in ISO flexibiliy is the Canon 1D Mk II, with ISO from 50-3200 (!) Gotta be incredibly clean at ISO 50.
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