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  1. #1
    Krzys's Avatar
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    17mm f/4 FD mount

    I just got this lens and it is absolutely amazing. It came with the hood which is absurdly large for obvious reasons.

    I was wondering if a filter will cause vignetting on this lens and where to buy thin filters just in case. I would hate to damage the widely exposed glass.

    I plan to use UV, Yellow and Orange filters.

  2. #2
    Greg Campbell's Avatar
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    You might try the guys over at: http://tech.groups.yahoo.com/group/CanonFD/ too.

    I suspect you'll get some corner falloff at the wider apertures even w/o a filter. My 20mm does this to a small degree; it's not particularly troublesome.

    Enjoy!

  3. #3
    benjiboy's Avatar
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    I got one recently ( A FD 17mm that is ) and when my wife picked up the camera and held it in the vertical format she looked through it she said " Wow, I can see the sky and my feet at the same time ! "
    I agree with the previous post, and would try to avoid using filters on extreme wide angle lenses because they tend to vignette, which is why some of them have dial in ones built in like the Tamron SP 17 mm, and many fish eyes .
    Last edited by benjiboy; 09-05-2009 at 03:39 AM. Click to view previous post history.
    Ben

  4. #4
    Krzys's Avatar
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    Are there any super thin filters I can get? If I stop down to f/8 will I eliminate the natural vignetting of the naked lens/minimize filter vignetting - or do I have to stop down more?

    I will do some tests when I have some spare time in the next few days. Just wondering about thin filter suppliers. So far I can only see that Hoya makes them and I cant find any measurements on the width..

  5. #5
    David A. Goldfarb's Avatar
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    New Heliopan filters come in thin rings, and B+W makes filters in slim rings for WA lenses.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

  6. #6

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    I also have a 17FD and I really love it. You can use thin filters, but if you have a darkroom you crop the vignetting.

    Jeff

  7. #7
    Krzys's Avatar
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    If my viewfinder has say...94% converage, would the vignetting crop out of my composition?

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    Quote Originally Posted by Krzys View Post
    If my viewfinder has say...94% converage, would the vignetting crop out of my composition?
    I'm not sure, you can check the negatives. Like I said before if you have a enlarger in a darkroom you can crop it. Of course if you use slides then you would have a problem. You can use one filter, but two or more will cause vignetting.

    Jeff

  9. #9
    Krzys's Avatar
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    I will be shooting B&W negs for enlarging. Does anyone know the width of a thin filter as opposed to a normal one. Funnily enough I cant mind much information on that dimension.

    I put a smaller filter upto the rim and couldnt see any vignetting, though the viewfinder coverage is not 100% on my AE-1

  10. #10
    David A. Goldfarb's Avatar
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    To see if there is vignetting, open the back of the camera, set the shutter on B with the lens at maximum aperture, and look through the film gate and see if you can see the filter rim or the lens shade in the corners of the frame. If you can, then stop down and see if that eliminates the problem, and then you'll know the widest aperture you can use without vignetting. This is the kind of thing one does all the time with large format.

    Normal filter rings are often 4-5mm, and slim rings are often 2-3mm.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
    Photography (not as up to date as the flickr site)--http://www.davidagoldfarb.com/photo
    Academic (Slavic and Comparative Literature)--http://www.davidagoldfarb.com

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