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Thread: What does it mean when u say a lens is fast?

  1. #21
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    Quote Originally Posted by Ah Pao
    However, it comes in very handy in low-light conditions where sometimes you can get away with a sharp picture (no handshake blur) without using a tripod.
    wee... so its quite useful for indoor stuff like weddings? except the AF prob and DOF..

  2. #22
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    Quote Originally Posted by +evenstar
    Yes, discontinued lens, but not up to par with the 50mm f1.4 counterpart, as many say...

    yo! u have the proer one rite!!!

  3. #23
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    Quote Originally Posted by limmatthias
    wee... so its quite useful for indoor stuff like weddings? except the AF prob and DOF..
    my opinion, indoor stuff like weddings may tend to get darker than expected, so bounce flash off the ceiling or something will be a good idea..cuz i wudent want to be using too high an ISO for any ocassion..and bounce flash retains most natural lighting if used correctly..

    em, just a question, theres a diff btwn noise, and colour bleeding in a final picture? severe colour bleeding is caused by insufficient lens elements/groups to refract light.......?

  4. #24

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    Quote Originally Posted by doug3fflux
    em, just a question, theres a diff btwn noise, and colour bleeding in a final picture? severe colour bleeding is caused by insufficient lens elements/groups to refract light.......?
    Noise = Unwanted electronic or optical signals that cause interference in the reproduction of an image.

    Colour bleeding = ? What you described sounds like chromatic abberation instead. Colour bleeding in an inkjet print is when ink spots on a paper diffuse into neighbouring spots, causing unintended mixing of colours.

  5. #25
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    Quote Originally Posted by Ah Pao
    Noise = Unwanted electronic or optical signals that cause interference in the reproduction of an image.

    Colour bleeding = ? What you described sounds like chromatic abberation instead. Colour bleeding in an inkjet print is when ink spots on a paper diffuse into neighbouring spots, causing unintended mixing of colours.

    thanks for the link
    so the red/green blur of colours in parts of the picture where there are single hues..is called CA? or is it just due to poor resolution..
    Last edited by doug3fflux; 1st July 2005 at 03:31 PM.

  6. #26
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    just read up on wiki the definition of CA...yeap that was what i was referring to..thanks anyway Ah Pao..

    so fluorite, apo and basically lenses that have greater number of lens elements in groups give colours that are sharper/more saturated....?

  7. #27
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    Quote Originally Posted by kingpin
    Think fastest lens is the f1.0 like the Leica 50mm f1.0 nocturnal. But I stand to be corrected. Believe there is a f0.8. Think it is a canon lens. Anyone?
    The FD is a f0.95..

    With a little cheating, there is, of course, the Carl Zeiss N-Mirotar 210mm f0.03 lense...

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