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  1. #11
    John Austin's Avatar
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    Regarding the flame war, both sides are correct but the correctest one depends on the situation. If you are in a clean studio environment work without. If you are on a beach on a sandy day definitely wear one, the filter will get salt and sand on it, but the lens will remain safe. Just use a bit of brian

  2. #12

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    Some lenses of course demanded that a filter was fitted for it to work properly at all, Principally 'cat' lenses AKA Mirror lenses, where there was a slot in the back to take the appropriate lens for what you were taking, but were required to finish off the optical path of the lens, but other lenses- no I don't think so.

  3. #13
    David A. Goldfarb's Avatar
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    Can filters IMPROVE lenses?

    Quote Originally Posted by MattKing View Post
    A single colour filter (e.g. a yellow Y2) can certainly improve the black and white performance of a lens that otherwise suffers from chromatic aberration.
    Indeed, I usually use a yellow or orange filter with my Busch Vademecum set for this reason. Of course when the lens was made, plates were blue sensitive or UV sensitive, so chromatic abberation wouldn't show up on the plate, but the set came with two corrector filters for focusing to compensate for UV focus shift. The corrector filters would be removed for the shot.

    That said, a MC filter won't reduce flare on an uncoated lens.
    flickr--http://www.flickr.com/photos/davidagoldfarb/
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  4. #14

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    A UVa filter left on an expensive, in demand, older lens throughout it's lifetime can "improve" the resale value of that lens.

  5. #15
    RalphLambrecht's Avatar
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    i think so too, because it protects the front element from cleaningmarks
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  6. #16

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    Quote Originally Posted by GeorgeDexter View Post
    Lots of vicious flamewars have been fought over whether to use UV or other protective filters on high end glass -- whether there is any loss in image quality, and whether it is worth it.

    But how about this: what about using a good, multicoated filter on older lenses prone to flare? Can a multicoated filter actually improve the image quality of an older lens that has few coatings, if any, or coatings damaged or worn away by years of cleaning?
    I have several 50+ year old Leica and other lenses, that are supposed to be prone to flare, etc., and I'm wondering if it would improve things if I put a filter on them.

    Summar 5cm f2
    Summicron 5cm f2
    Elmar 5cm f3.
    Culminar 135mm f4.5
    Jupiter-8 5cm f2
    Jupiter-12 35mm f2.8

    For that matter, I have some older non-Ai Nikon glass that may benefit, too. What do you think.

    Thanks
    No.

  7. #17

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    Quote Originally Posted by John Austin View Post
    Just use a bit of brian
    I like that endorsement!

  8. #18

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    Quote Originally Posted by BrianShaw View Post
    I like that endorsement!
    Which bit though?

  9. #19
    RalphLambrecht's Avatar
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    Quote Originally Posted by BrianShaw View Post
    I like that endorsement!
    you see, the trouble with common sense is that it isn't all that common, but the op question is a good one and not so easy to answer. i tend to believe that a good filter cannot hurt and may help to improve the optical performance of an otherwise mediocre system. it is worth a test, and we'll see.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  10. #20

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    Quote Originally Posted by RalphLambrecht View Post
    you see, the trouble with common sense is that it isn't all that common, but the op question is a good one and not so easy to answer. i tend to believe that a good filter cannot hurt and may help to improve the optical performance of an otherwise mediocre system. it is worth a test, and we'll see.
    Possibly. A monochrome filter will help out a lens with chromatic aberrations.

    But - putting a multicoated filter on a single coated (or uncoated) lens will not make it perform like a multicoated lens. It can't, if you think it through. There are all of the un- or single coated surfaces there in and on the lens, reflecting precisely as they always do. A far more effective approach would be to use a proper lens shade, which will make a huge difference in how an uncoated lens performs.

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