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Thread: Nikon: 35mm or 50mm Prime?

  1. #1

    Default Nikon: 35mm or 50mm Prime?

    just found out that FX lens appeared magnified on DX cameras.

    Was thinking to get a D90 with a Prime lens.

    Should i get a FX 50mm (where it will appear as a 75mm) or a 35mm DX lens?
    Apparently there is no FX 35mm. (too old, i was told and no AF)

    My goal is to use the prime lens as sorta a general kind of lens.

  2. #2
    Member Irvine's Avatar
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    Default Re: Nikon: 35mm or 50mm Prime?

    Quote Originally Posted by leo55g View Post
    just found out that FX lens appeared magnified on DX cameras.

    Was thinking to get a D90 with a Prime lens.

    Should i get a FX 50mm (where it will appear as a 75mm) or a 35mm DX lens?
    Apparently there is no FX 35mm. (too old, i was told and no AF)

    My goal is to use the prime lens as sorta a general kind of lens.
    all lenses appear magnified on DX cameras.

    focal length remains the same, while field of view is affected due to different sensor sizes. the crop factor of 1.5x applies as long as u continue using a DX body. so even if u use a 35mm f/1.8G DX lens, the field of view u get on the DX camera is equivalent to the field of view u get on FX camera at the focal length of 52.5mm.

    DX lenses r specially made for DX cameras with a smaller image circle to accommodate the smaller sensor, thus reducing manufacturing costs n makin them more affordable to the consumers.

    there ARE 35mm primes for FX. they r AF-D 35 f/2 n the AF-S 35 f/1.4G currently in production, n both will AF nicely on ur d90.

    to decide on which prime u want to go for, stick ur kit lens to either 35mm or 50mm n try shooting all the way at these 2 focal lengths. from there then u decide which is suited for ur needs.
    Last edited by Irvine; 9th May 2011 at 12:15 AM.
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  3. #3

    Default Re: Nikon: 35mm or 50mm Prime?

    Quote Originally Posted by leo55g View Post
    just found out that FX lens appeared magnified on DX cameras.

    Was thinking to get a D90 with a Prime lens.

    Should i get a FX 50mm (where it will appear as a 75mm) or a 35mm DX lens?
    Apparently there is no FX 35mm. (too old, i was told and no AF)

    My goal is to use the prime lens as sorta a general kind of lens.
    Crop factor also applies to DX lenses as well. There are 35mm FX lenses. The 35mm F2 is an FX 35mm. Do note that that 35mm f2 annd 35mm f1.8 would give you the same range regardless of whether they are FX or DX lenses.
    Last edited by spree86; 9th May 2011 at 12:13 AM.

  4. #4

    Default Re: Nikon: 35mm or 50mm Prime?

    Quote Originally Posted by Irvine View Post
    all lenses appear magnified on DX cameras.

    focal length remains the same, while field of view is affected due to different sensor sizes. the crop factor of 1.5x applies as long as u continue using a DX body. so even if u use a 35mm f/1.8G DX lens, the field of view u get on the DX camera is equivalent to the field of view u get on FX camera at the focal length of 52.5mm.

    DX lenses r specially made for DX cameras with a smaller image circle to accommodate the smaller sensor, thus reducing manufacturing costs n makin them more affordable to the consumers.

    there ARE 35mm primes for FX. they r AF-D 35 f/2 n the AF-S 35 f/1.4G currently in production, n both will AF nicely on ur d90.

    to decide on which prime u want to go for, stick ur kit lens to either 35mm or 50mm n try shooting all the way at these 2 focal lengths. from there then u decide which is suited for ur needs.
    since the crop factor applies across ALL DX lenses, then it really does not matter if i get a DX or FX 35mm/50mm right?

  5. #5
    Member Irvine's Avatar
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    Default Re: Nikon: 35mm or 50mm Prime?

    Quote Originally Posted by leo55g View Post
    since the crop factor applies across ALL DX lenses, then it really does not matter if i get a DX or FX 35mm/50mm right?
    it doesnt matter at all. u will only get the original field of view at any focal length only after u upgrade ur camera to FX.
    Google is your friend. Make use of it.

  6. #6
    Moderator daredevil123's Avatar
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    Default Re: Nikon: 35mm or 50mm Prime?

    Quote Originally Posted by leo55g View Post
    since the crop factor applies across ALL DX lenses, then it really does not matter if i get a DX or FX 35mm/50mm right?
    Doesn't matter on a DX camera. Matters on a FX camera

  7. #7
    Senior Member ZerocoolAstra's Avatar
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    Default Re: Nikon: 35mm or 50mm Prime?

    Quote Originally Posted by leo55g View Post
    since the crop factor applies across ALL DX lenses, then it really does not matter if i get a DX or FX 35mm/50mm right?
    There are some minor factors.
    Some people believe that the corners will be sharper when pairing an FX lens w a DX camera, because the DX camera only captures the central part of the image being projected by the FX lens.

    Personally I don't think a hobbyist should be too fussed about it
    Exploring! :)

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