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07/31/2004 09:47:42 AM · #26 |
Originally posted by SoCal69:
It's a rule of thumb for getting an approximate exposure in sunny conditions when you don't have a meter. Since the moon is merely reflecting sunlight, the rule can be used, with some adjustments. Generally, just set your lens to f/16 and set your shutter speed at 1/ISO. You can do a google search and come up with dozens of sites that explain it. Here's one that I ran across: //www.davidrichert.com/sunny_16_rule.htm |
Shouldn't this also depend on your focal length ? at 300mm f/16 means a larger opening ( more light ) than f/16 at lets say 100mm which receives only about 1/9 the light ?
I am just confused why the focal length is not a factor in determining the light falling on to your sensor.
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07/31/2004 10:23:52 AM · #27 |
Originally posted by gaurawa:
Originally posted by SoCal69:
It's a rule of thumb for getting an approximate exposure in sunny conditions when you don't have a meter. Since the moon is merely reflecting sunlight, the rule can be used, with some adjustments. Generally, just set your lens to f/16 and set your shutter speed at 1/ISO. You can do a google search and come up with dozens of sites that explain it. Here's one that I ran across: //www.davidrichert.com/sunny_16_rule.htm |
Shouldn't this also depend on your focal length ? at 300mm f/16 means a larger opening ( more light ) than f/16 at lets say 100mm which receives only about 1/9 the light ?
I am just confused why the focal length is not a factor in determining the light falling on to your sensor. |
The same f/stop will give you the same amount of light regardless of the focal length of your lens. f/4 on a 50mm lens lets in the same amount of light as f/4 on a 200mm lens. The f-stop number is simply a ratio which already takes focal length into account (focal length/aperature diameter=f-stop). Note that as your focal length increases, your actual aperature must also increase to maintain the same ration, resulting in the same amount of light reaching your sensor.
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07/31/2004 02:13:31 PM · #28 |
not sure if this was said already, but the speed challenge doesn't have to be of the moon. :-)) Good luck and use your imagination!
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07/31/2004 03:31:36 PM · #29 |
Using the sea can help enhance the moon.
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07/31/2004 04:46:42 PM · #30 |
Originally posted by marbo:
Using the sea can help enhance the moon.
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WOW!!!!
Awesome pic - how was it done- like normally sunsets are easy with the sea coz the sun goes down, but the moon? I've never seen a moon shot like this - really cool.
By the way - This site might help also.
cheers
Kaush
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07/31/2004 04:53:38 PM · #31 |
I forgot that...thanks for the reminder, marbo! ;o)
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