filters

This is a discussion on filters within the Film Photography Equipment forums, part of the FILM PHOTOGRAPHY FORUM category; hi. i'm back all ready!!! i was wondering how do i tell what mm thread my lens are when buying filters? they say they are ...


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Thread: filters

  1. #1

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    hi. i'm back all ready!!! i was wondering how do i tell what mm thread my lens are when buying filters? they say they are for 58mm and such but i have no idea what i have.lol i would appreciate any help


  • #2
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    What do you have? The size in mm is usually written on the inside of the lens cap.


    “Try and penetrate with our limited means the secrets of nature and you will find that,
    behind all the discernible concatenations, there remains something subtle, intangible and inexplicable.
    Veneration for this force beyond anything that we can comprehend is my religion.”
    (Albert Einstein)


  • #3

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    Try this J_Jo

    http://web.mit.edu/dennis/www/canon/fd-lens-info.html

    Hope it helps.

    Keith
    Keith

  • #4

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    i have quiet a few lenses. they are all different mm. so i was confused on if every lens was the same diameter or not. so 50mm is the size filter i would need if thats what the lens said?

  • #5

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    You look at the lens straight on. It has the mm size around the outside of the glass.

    Filters can get expensive. I know you can get a step down ring, buy the filters to fit the largest lens, then use the step down ring to make them fit the others....I don't know if it's cost effective or how well it works.
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  • #6
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    Correct. Most people end up with a variety of lenses and filters to fit each different size. Also, when sizes are relatively close, you can get adapter rings. For example, I have one lens that is 77mm and another that is 72mm. I have an adapter so I can use the same 77mm polarizer on both lenses.


    “Try and penetrate with our limited means the secrets of nature and you will find that,
    behind all the discernible concatenations, there remains something subtle, intangible and inexplicable.
    Veneration for this force beyond anything that we can comprehend is my religion.”
    (Albert Einstein)


  • #7
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    Grandpa good advice as the larger specialist filters can be expensive - but if you use a UV filter then buy one for each lens.


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