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Old Dec 21, 2002, 2:26 PM   #1
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Default 2 simple questions...

In a 1600 x 1200 shot, would a 4mp and 5mp camera produce the same amount of detail?

What is the magnitude of difference between a F1.8 and F2.8 for low light shooting?

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Old Dec 21, 2002, 3:24 PM   #2
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Lodewick,

I just answered this in the Olympus forum. Cross-posting is CONFUSING!

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Old Dec 21, 2002, 3:26 PM   #3
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Quote:
In a 1600 x 1200 shot, would a 4mp and 5mp camera produce the same amount of detail?
Not much (if any) difference. Would really depend on the camera: a good quality 4Mp camera would do better than a not so good 5Mp camera. But if you are going to shoot at 1600x1200, why not just get a cheaper 2Mp camera? About the only reason to shoot at a lower resolution is lack of memory - the solution to that is to get more memory.
Quote:
What is the magnitude of difference between a F1.8 and F2.8 for low light shooting?
With the same light, you will be able to use a shutter speed about 2.5 (2.419 -square of the ratio) times faster with the 1.8 than you can with the 2.8 lens, e.g., 1/40th @ f/2.8 = 1/100th @ f/1.8

There will also be a difference in the depth of focus, but that discusion will just lead us into circles of confussion.
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