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Photography Question 
Eric Seidle
 

Ladscape Questions


While testing out my camera on waterfalls I found while my shutter speed goes as low as .5 my F-Stop only can go up to 8. To get a real good flowing action I need to use 1/4 shutter speed but my pictures somtimes can come up a bit bright due to the fact my F-Stop only goes to 8. Any tips? Also I have noticed while changing my shutter and F-stop some of my pictures come out of focus. Do you recomend using a tripod? I am assuming the problem is that my camera become sensitive and I cant hold it still enough. Is that true?


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6/4/2005 8:57:44 AM

 
Carolyn  M. Fletcher
BetterPhoto Member Since: 10/6/2001
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  Probably true. Mine only goes to F8 also. I have given up trying to veil water. About the best I can do is put it on night mode with a tripod and hope for the best.


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6/4/2005 10:25:37 AM

 
Eric Seidle   So your saying night view somtimes works??? I feel your pain. If I could go to F10 or F11 I would be in like flint.


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6/4/2005 10:57:06 AM

 
Carolyn  M. Fletcher
BetterPhoto Member Since: 10/6/2001
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  It slows it down enough so it sort of "semi" works. LOL


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6/4/2005 11:17:21 AM

 
Jon Close
BetterPhoto Member Since: 5/18/2000
  At longer shutter speeds you definitely need a tripod.

You don't have to give up trying these shots. It can be done with your cameras. Set the ISO for the lowest setting available, and get a neutral density filter (or 2 or 3). These are available in variable strengths, and can be combined.

Different companies label their ND filter factors differently. The equivalencies are:
0.3 = 2x = 1 stop
0.6 = 4x = 2 stops
0.9 = 8x = 3 stops
1.2 = 16x = 4 stops
1.5 = 32x = 5 stops
1.8 = 64x = 6 stops
etc.

In bright sun and ISO 50 your camera may be setting proper exposure as 1/125 and f/8. Since f/8 is the smallest aperture, setting longer shutter speeds will give overexposure. The neutral density filter cuts the amount of light entering the lens, so that you can set longer shutter speeds without overexposing. To get a shutter speed of 1/8 requires 4 stops of neutral density filtering, to get to 1/2 requires 6 stops.


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6/4/2005 11:22:46 AM

 
Andrew Laverghetta
BetterPhoto Member Since: 9/13/2004
  Also, give it a try during dawn and dusk.


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6/4/2005 11:30:26 AM

 
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