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Old Feb 17, 2004, 8:15 PM   #1
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Default Shutter speed question

Is it true that the lower the shutter speed is the more light I get. And the higher the shutter speed is the less light I get. :?:
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Old Feb 17, 2004, 8:29 PM   #2
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Yes that is true.
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Old Feb 17, 2004, 8:32 PM   #3
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Each stop is a factor of 2 over the next stop with the same f/stop. Each f/stop is also a factor of 2 given the same shutter speed. (either 1/2 as much light or twice as much light depending on which direction)

1/2 second @ f/4 will have twice the light of 1/4 second @ f/4....but 1/2 sec @ f/4 will give the same amount of light as 1/4 sec @ f/5.6
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Old Feb 17, 2004, 8:35 PM   #4
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Thanks for the help once again.
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Old Feb 17, 2004, 8:44 PM   #5
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Why is it on my monitor c-750 the red shutter speed numbers blink off and on?
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Old Feb 17, 2004, 8:59 PM   #6
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Quote:
Originally Posted by Imacer
Why is it on my monitor c-750 the red shutter speed numbers blink off and on?
Don't take this for gospel because I don't know that camera, but generally when the shutter speed or aperture flashes it indicates that you are out of range....in this case, the shutter speed cannot expose properly with the aperture you have selected.
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Old Feb 17, 2004, 9:45 PM   #7
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The other possibility is that the camera is telling you that you need to use the flash - below a certain limit (usually 1/60 of a second) your image will show a lot of vibration from hand shake.

This is about the same as ohenry's comment...

Does this occur when the shutter speed is very high, very low or are you in manual mode picking aperature and shutter speed?

You might want to ask this in the Olympus forum - they have your camera and can replicate what you're doing and give you a definitive answer.
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Old Feb 17, 2004, 10:26 PM   #8
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Quote:
Originally Posted by ursa
The other possibility is that the camera is telling you that you need to use the flash - below a certain limit (usually 1/60 of a second) your image will show a lot of vibration from hand shake.

This is about the same as ohenry's comment...

Does this occur when the shutter speed is very high, very low or are you in manual mode picking aperature and shutter speed?

You might want to ask this in the Olympus forum - they have your camera and can replicate what you're doing and give you a definitive answer.
This happens when shutter speed is 1/320. My mode is ASM. When flash is up the flashing goes away. I am shooting indoors. If i was to shoot outdoors will the shutter speed numbers still blink, since outside is much brighter.
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Old Feb 18, 2004, 8:08 AM   #9
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My CP4500 exposure speed goes red at 1/2000 of a second at full aperture, but turns green when I stop the lens down. I've never found out why and the exposures come out ok.

Regards,
Graham.
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