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Thread: Focal Length Impact Based on Crop Factor

  1. #1

    Default Focal Length Impact Based on Crop Factor

    I am currently owning a D90. I know that it has a crop factor of 1.5. Does it mean that I will never be able to get a wide angle lens, knowing that a lens of 18mm focal length would be 27mm instead?

  2. #2
    Moderator nightwolf75's Avatar
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    Default Re: Focal Length Impact Based on Crop Factor

    Quote Originally Posted by limetouch View Post
    I am currently owning a D90. I know that it has a crop factor of 1.5. Does it mean that I will never be able to get a wide angle lens, knowing that a lens of 18mm focal length would be 27mm instead?
    no... nikon has the 12-24mm. sigma has the 10-24mm & tokina 12-24. all are specifically designed for DX format cameras.
    If Life worked on auto mode then manual mode for photography would have never existed. ― Deeksha Mittal

  3. #3

    Default Re: Focal Length Impact Based on Crop Factor

    Quote Originally Posted by nightwolf75 View Post
    no... nikon has the 12-24mm. sigma has the 10-24mm & tokina 12-24. all are specifically designed for DX format cameras.
    For Tokina, we also have 11-16. Better IQ than 12-24
    Unless going into FE, that's as wide as it will go ?
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    Senior Member egnaro's Avatar
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    Default Re: Focal Length Impact Based on Crop Factor

    for digital,

    four thirds, we have 7-14mm (14-28 35mm equiv) the 2nd widest FOV I can find now.

    1st will be Sigma 12-24mm on FF body.
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    Moderator nightwolf75's Avatar
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    Default Re: Focal Length Impact Based on Crop Factor

    Quote Originally Posted by David Kwok View Post
    For Tokina, we also have 11-16. Better IQ than 12-24
    Unless going into FE, that's as wide as it will go ?
    iirc, the widest FF shd be the AF 14mm?

    anyway, DX users are not short of options when it comes to WA lenses, regardless the brand.
    If Life worked on auto mode then manual mode for photography would have never existed. ― Deeksha Mittal

  6. #6

    Default Re: Focal Length Impact Based on Crop Factor

    then, I'm curious as a beginner, comparing if no plan going for FX cam, getting a wide angle FX lens or DX lens, which is better worth?

  7. #7

    Default Re: Focal Length Impact Based on Crop Factor

    Quote Originally Posted by nightwolf75 View Post
    iirc, the widest FF shd be the AF 14mm?

    anyway, DX users are not short of options when it comes to WA lenses, regardless the brand.
    In the case of Nikkor lenses, am I only limited to DX lenses? Because a 50mm AF-D F1.4 would be 75mm and it isn't exactly a normal lens at that point of time. And what is WA?

  8. #8

    Default Re: Focal Length Impact Based on Crop Factor

    WA = Wide Angle.

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    Moderator Octarine's Avatar
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    Default Re: Focal Length Impact Based on Crop Factor

    Quote Originally Posted by limetouch View Post
    In the case of Nikkor lenses, am I only limited to DX lenses? Because a 50mm AF-D F1.4 would be 75mm and it isn't exactly a normal lens at that point of time.
    Read your manual to see which lenses can be used. Also, check Nikon website.

  10. #10

    Default Re: Focal Length Impact Based on Crop Factor

    Im using 16-85mm on my cam...it seems wide enough for me uses even with the 1.5x factor ...
    Nikon D750 and some manual focus primes :)

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