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04/20/2008 07:11:38 PM · #1 |
i was trying to do motion blur on some clouds... and i had my aperature alll the way up and i still was over exposed wehn i had the shutter speed to where i wanted it
any ideas? |
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04/20/2008 07:16:55 PM · #2 |
Get a Neutral Density filter.
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04/20/2008 07:32:35 PM · #3 |
Originally posted by Kali:
Get a Neutral Density filter. |
Wouldnt he need a graduated ND filter if he is just blowing out the sky area?
Matt |
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04/20/2008 07:38:39 PM · #4 |
Originally posted by MattO:
Originally posted by Kali:
Get a Neutral Density filter. |
Wouldnt he need a graduated ND filter if he is just blowing out the sky area?
Matt |
that would also be a good idea, or stacking polarizer too. If you can't get a graduated filter you may have to do something like a HDR image where you stack one image of a nicely exposed ground with the image you want of the sky (assuming you have ground in the image that is).
Earlier someone was talking about trying to photograph the sun and he couldn't get a good sky shot but once he checked his ISO setting and manually reduced it, he was able to get one. Might want to check that. |
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04/20/2008 08:22:10 PM · #5 |
Getting exposures of more than a second (necessary to show movement in clouds) will require approximately 10 stops of ND. These filters are available (I have a B+W 10-stop ND that I purchased through B&H) but I doubt that a graduated ND is available in this strength. In any case the use would be very limited. Better to combine exposures of sky and land later in post.
In order to get the kind of movement you are looking for, you still may need to stack multiple exposures, which, if taken back-to-back, can be easily done.
ETA: It's a little easier at night...
Message edited by author 2008-04-20 20:33:29. |
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04/20/2008 08:25:58 PM · #6 |
Originally posted by MattO:
Originally posted by Kali:
Get a Neutral Density filter. |
Wouldnt he need a graduated ND filter if he is just blowing out the sky area?
Matt |
Either or... it really depends on where the sun is in the sky but I would suggest beginning with a ND and then moving onto a GND.
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