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Thread: What The Hell, new flash selling at $200++? is it true? nikon flash...

  1. #21
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    Default Re: What The Hell, new flash selling at $200++? is it true? nikon flash...

    Quote Originally Posted by Youhong View Post
    Ya lor... Happened to notice the Nikon SB-80DX... Wonder if it is good... Or maybe stick to SB-600...

    According to Nikon.com.sg
    SB-800: $800
    SB-80DX: $650
    SB-600: $440
    you need a SU-800...

  2. #22

    Default Re: What The Hell, new flash selling at $200++? is it true? nikon flash...

    Quote Originally Posted by westwest1 View Post
    you need a SU-800...
    I think SU-800 is a waste of money... It's just a commander right? D70s don't need that unless using I need to use different channels and/or groups... Even then, SB-800 will do the job... Then the rest maybe use SB-600... just that they don't come with a diffusion dome...
    I am NOT a PROfessional photographer and photography is NOT my hobby

  3. #23
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    Default Re: What The Hell, new flash selling at $200++? is it true? nikon flash...

    Quote Originally Posted by compro_1975 View Post
    ... from what i read, seems like it can reach as far as 21 meters leh.
    You might need ASA1600 at biggest aperture to do that .

    Regards,
    Arto.

  4. #24
    Senior Member azul123's Avatar
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    Default Re: What The Hell, new flash selling at $200++? is it true? nikon flash...

    Quote Originally Posted by Artosoft
    You might need ASA1600 at biggest aperture to do that .

    Regards,
    Arto.
    Specs say, 30m at ISO200 and 21m at ISO100.

    ../azul123

  5. #25
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    Default Re: What The Hell, new flash selling at $200++? is it true? nikon flash...

    Quote Originally Posted by azul123 View Post
    Specs say, 30m at ISO200 and 21m at ISO100.

    ../azul123
    That's GN number.

    If you set your camera to ISO200, the GN is 30m. Meaning for distance 1m, you can use Aperture f/30 (aperture = GN / distance ==> Aperture = 30 / 1m = f/30).

    For distance 21m, you need aperture 30/21m = aperture ~f/1.4, or at ASA1600 = aperture ~f/4.

    Yah, not necessary using ASA1600 if you have f/1.4 lens .

    Regards,
    Arto.
    Last edited by Artosoft; 17th November 2006 at 10:52 AM.

  6. #26
    Senior Member azul123's Avatar
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    Default Re: What The Hell, new flash selling at $200++? is it true? nikon flash...

    Oops, yes that's GN.

    So, if the formula is, f/stop (aperture) = guide number (GN) x ISO sensitivity factor ÷ Shooting distance (m/ft).

    F = 21 (GN) x 1 (ISO 100) ÷ 6m

    That's F3.5 aperture, for 6m range. Still useful for many cases, of course up ISO for further ranges.

    ../azul123

  7. #27
    Senior Member azul123's Avatar
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    Default Re: What The Hell, new flash selling at $200++? is it true? nikon flash...

    Nikon is good for ISO800 (sensitivity x2.8).

    That will be F = 21 (GN) x 2.8 (ISO 800) ÷ 21m

    = F2.8 aperture, good for use on F2.8 and faster aperture lenses.

    Wow, it's looking better and better. Must get it liow.

    ../azul123
    Last edited by azul123; 17th November 2006 at 11:23 AM.

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