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01/12/2003 06:18:18 PM · #1 |
| Imagine I'm a 2 year old. Explain bracketing to me? |
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01/12/2003 06:20:54 PM · #2 |
Bracketing is the process of shooting more than one photo of the same scene/image at different exposure levels.
For instance:
If you shoot one photo at F4.5 / 1.30" / ISO 100 - you would be bracketing if you shot two more at these settings:
F5.6 / 1/30" / ISO 100
F3.5 / 1/30" / ISO 100
You are shooting above and below the original exposure level... Bracketing is simply shooting around the exposure levels trying to find the one that works best...
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01/12/2003 07:01:50 PM · #3 |
Thank you. That's alot better.
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01/12/2003 07:28:13 PM · #4 |
without changing the shutter speed to match?
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01/12/2003 07:33:49 PM · #5 |
Originally posted by Arachnophilia:
without changing the shutter speed to match? |
You want to shoot at different exposure levels, so you'd want things to be different. You could bracket by changing aperture, by changing shutter speed or by changing ISO (as some newer DSLRs allow automatically) but the point is you want to shoot at different effective exposures. So you wouldn't change the aperture one way and the shutter the other way or you'd end up shooting at the same exposure.
Bracketing is useful when the lighting is changing quickly or you aren't really sure which exposure to shoot at, particularly if it is a 'one off' type opportunity. Normally it allows you to shoot at (for example) -1 EV, 0 and +1EV around where the camera meter has decided is the 'correct' exposure. You can shift this by using exposure compensation in the first place, so if you'd decided to deliberately underexpose from the meter reading by 1 stop, and were bracketing +1 and -1 stop, you'd shoot at -2, -1 and 0 EV around the metered exposure reading.
Usually you can change the bracketing amount between 1/2 a stop and 2 stops around the metered exposure.
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