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exposure for lightning?



 
 
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  #1  
Old June 28th 07, 04:04 PM posted to rec.photo.digital.slr-systems
Dr. Joel M. Hoffman
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Posts: 151
Default exposure for lightning?

With the lightning storms expected this afternoon, I'm going to try
to take some daytime pictures of lightning. Does anyone have any
advice on exposure? The lightning is visible during the day, so my
guess is that no special exposure is necessary, but last night I tried
f/4.0 at ASA 500 and the lightning didn't even register....

Also, what about white balance?

Thanks for any advice.

-Joel

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  #2  
Old June 28th 07, 07:06 PM posted to rec.photo.digital.slr-systems
John McWilliams
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Posts: 6,945
Default exposure for lightning?

Dr. Joel M. Hoffman wrote:
With the lightning storms expected this afternoon, I'm going to try
to take some daytime pictures of lightning. Does anyone have any
advice on exposure? The lightning is visible during the day, so my
guess is that no special exposure is necessary, but last night I tried
f/4.0 at ASA 500 and the lightning didn't even register....

Also, what about white balance?

Thanks for any advice.


My advice would be to not multipost, and either cross post to related
groups, or keep the discussion to one group. There are a number of
replies in rec.photo.equipment.35mm.

Also, Joel, if you added a -- plus one space and one "Enter", you'll
create a sig delimiter which will be read by standard news readers and
everything below that will be removed in the reply. Then no one should
mind what's there.

--
john mcwilliams
  #3  
Old June 28th 07, 09:43 PM posted to rec.photo.digital.slr-systems
Pete D[_2_]
external usenet poster
 
Posts: 347
Default exposure for lightning?


"John McWilliams" wrote in message
. ..
Dr. Joel M. Hoffman wrote:
With the lightning storms expected this afternoon, I'm going to try
to take some daytime pictures of lightning. Does anyone have any
advice on exposure? The lightning is visible during the day, so my
guess is that no special exposure is necessary, but last night I tried
f/4.0 at ASA 500 and the lightning didn't even register....

Also, what about white balance?

Thanks for any advice.


My advice would be to not multipost, and either cross post to related
groups, or keep the discussion to one group. There are a number of replies
in rec.photo.equipment.35mm.

Also, Joel, if you added a -- plus one space and one "Enter", you'll
create a sig delimiter which will be read by standard news readers and
everything below that will be removed in the reply. Then no one should
mind what's there.

--
john mcwilliams


Bloody wonderful John, but what about his question.... anything???


Joel,

I have had success with lightning by using similar settings as for
fireworks. F8-11, low ISO (not 500), Bulb setting using remote release and
open the shutter for say 10-20 seconds and hope that a strike comes in that
time, big fat tripod of course. Much harder to get a shot if the conditions
are light, dark is best.

Cheers.

Pete


  #4  
Old June 28th 07, 10:31 PM posted to rec.photo.digital.slr-systems
ASAAR
external usenet poster
 
Posts: 6,057
Default exposure for lightning?

On Thu, 28 Jun 2007 15:04:39 GMT, Dr. Joel M. Hoffman wrote:

With the lightning storms expected this afternoon, I'm going to try
to take some daytime pictures of lightning. Does anyone have any
advice on exposure? The lightning is visible during the day, so my
guess is that no special exposure is necessary, but last night I tried
f/4.0 at ASA 500 and the lightning didn't even register....


Try google with the search term Lightning Photography Exposure.
The lightning probably didn't register because your shutter speed
wasn't long enough to catch the flash. Use the lowest ISO that your
camera has to lengthen the exposure time. The first web page (URL
below) had a film photographer using Kodachrome 64 and Fujichrome
Velvia (ISO 50). For night photography his technique, assuming that
the sky is dark enough, is to use the camera's bulb setting to keep
the shutter open and wait for lightning to occur before closing the
shutter. His initial aperture is f/4 to f/5.6, but because
lightning varies in intensity, this is only his starting point for
setting the aperture. Digital cameras probably can't keep the
shutter open as long as film cameras because of sensor noise, but I
suppose a DSLR wouldn't have much of a problem with an exposure of a
minute or two. Most P&S cameras are limited to 8 or 15 seconds.
That's not too much of a limitation, you just keep taking pictures
in rapid sequence until lightning strikes, and with luck, that won't
be between shots.


As he says, it's much more difficult taking pictures of lightning
when there's still light in the sky because it "can consume huge
quantities of film quickly". But with a digital camera, that should
be no problem. In addition to using the smallest reasonable
aperture, you can add ND filters in order to lengthen the time the
shutter can stay open without overexposing the sky and surrounding
terrain.

The second URL is to a page describing the use of a digital
camera, and the suggested shutter speed was 10 to 30 seconds,
probably because the D70's lowest ISO setting was ISO 200.

These two web pages provide pretty good information on the
subject, but they were the first two and the only two that I checked
of the many hits that google's search returned, so some of the
others may be even more useful.

http://www.cimms.ou.edu/~doswell/ltgph.html

http://www.lightningphotography.com/tips.html

 




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