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04/17/2004 12:27:10 PM · #1 |
I just picked up my first real camera ;-) A Canon PowerShot Pro1. I experienced my first incounter with Vignetting the other day. I had no filters attached and no lens hood. Any suggestions in reducing this problem?
Message edited by author 2004-04-17 12:28:01.
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04/17/2004 12:29:59 PM · #2 |
ND filters and polarizers can reduce vignetting.
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04/17/2004 12:31:02 PM · #3 |
Originally posted by sigma:
I just picked up my first real camera ;-) A Canon PowerShot Pro1. I experienced my first incounter with Vignetting the other day. I had no filters attached and no lens hood. Any suggestions in reducing this problem? |
Can you show us an example?
Barbara
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04/17/2004 12:32:33 PM · #4 |
| We need more info to offer help. What did you experience? Try backing off of maximum zoom and see if that helps. |
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04/17/2004 12:48:53 PM · #5 |
Originally posted by josevillacorte:
ND filters and polarizers can reduce vignetting. |
?
Maybe I'm thinking of something different when I think of vignetting. But to me it occurs when the edge of the lens/ filters/ lens hood etc, encroach on the image and cause shadowing around the edges.
ND filters and polarisers can cause vignetting, particularly if they extend too far out from the lens - but I don't know that they do much to reduce it.
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04/17/2004 02:51:04 PM · #6 |
i think - but could be wrong - vignetting can be caused by a low/med quality lense at a longer focal length, and a wide aperture.
i have seen some shaded/darker corners from images taken with the canon 75-300mm f:4-5.6 at 300mm - f:6.3 & f:5.6
i havent noticed it with the 18-55mm efs lense
Message edited by author 2004-04-17 14:53:18.
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04/17/2004 09:43:42 PM · #7 |
Heres a shot I took where the vignetting is more visible.
//cydonian.com/transfer/IMG_0210_edited.jpg
Its only on the left side but other phtoos taken at the same time had it on all corners.
I dont get this that often, im just curious as to why its happening when theres no Lens Hood or Filter attached. I also experienced it on a shot where i used no zoom. This was when the sun was low in the horizon.
Message edited by author 2004-04-17 21:44:31.
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04/17/2004 10:17:11 PM · #8 |
You can get fall off at the corners even without vignetting, particularly in wide-angle lenses. In a normal wide-angle lens there will be a light fall of that is equal to the forth power of the cosign of the ray coming into the lens. This means that a 28mm fl lens (equivalent 35mm) would be expected to have a fall off of 60% at the extreme corners, or about 1.3 stops.
What was the fl of the lens you where using?
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04/23/2004 12:37:43 AM · #9 |
Here's a photoshop plugin that is meant to reduce vignetting (I can't vouch for it personally thogh):
//www.theimagingfactory.com/data/pages/products/products1.htm#vgt |
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