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Thread: f4.5 vs f5.6 - LENS HELP!??

  1. #1

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    f4.5 vs f5.6 - LENS HELP!??

    Hello,

    I am after a small amount advice if possible...

    I am currently stuck with a 90mm lens situation. What do people think would be the best option?

    I am looking at a schneider 90mm f5.6 and a rodenstock or nikkor 90mm f4.5. Is there much difference between these lenses other than the obvious stop difference? Will I benefit from having that extra stop? The f4.5 is more expensive which is why I am thinking of going for the schneider. I just wanted to know things like how much brighter the f4.5 would be for focusing compared to the f5.6 or whether they were as good as each other??

    Any help or opinions would be great.

    Thanks

  2. #2
    IanG's Avatar
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    Re: f4.5 vs f5.6 - LENS HELP!??

    I have a Schneider f5.6 90mm SA it's a touch bigger & heavier than my f6.8 Grandagon, but it's hard to see a difference when it comes to focussing etc.

    Personally I've been more than happy with these slower lenses for over 20+ years, I'm not sure the extra stop is worth carrying the extra weight. hey are all first rate lenses.

    If the f5.6 SA's a good price I'd go for it.

    Ian

  3. #3

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    Re: f4.5 vs f5.6 - LENS HELP!??

    It's only 1/2 stop difference... I have no problem focusing a 90mm f/8 lens, so I can't comment on focusing differences. Optically all the lenses you mention are absolutely first class. Espaecially below f/11 where you'll be shooting with these lenses.

  4. #4

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    Re: f4.5 vs f5.6 - LENS HELP!??

    As Mark said, only a 1/2 stop difference, which won't make any difference in the long run.

    Each will perform extremely well at traditional shooting apertures.

    I say get the cheaper of the too, and spend you money on film so you can shoot.
    When I grow up, I want to be a photographer.

    http://www.walterpcalahan.com/Photography/index.html

  5. #5

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    Re: f4.5 vs f5.6 - LENS HELP!??

    Thanks for the advice guys. That's great!

    Have you any ideas on some good transparency film? I have always shot colour neg and want to start trani. I love colours.

    Thanks

  6. #6

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    Re: f4.5 vs f5.6 - LENS HELP!??

    I have used Kodak EPP for 25-30 years and it has never let me down.

  7. #7

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    Re: f4.5 vs f5.6 - LENS HELP!??

    bigger max aperture is always better (even stopped down), at least in photography

  8. #8
    runs a monkey grinder Steve M Hostetter's Avatar
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    Re: f4.5 vs f5.6 - LENS HELP!??

    they will perform the same stopped down and hopefully you'll have the image in focus.

    in low light situations thats easier said then done ...wide angles are dark on GG

    just don't cheap out and regret it like many will and do.. I can honestly say that I could get by with a f8 but I have 20+ yrs with LF equipment, which is something to consider



    I just wanted to know things like how much brighter the f4.5 would be for focusing compared to the f5.6 or whether they were as good as each other??
    Last edited by Steve M Hostetter; 5-Mar-2009 at 13:02.

  9. #9
    All metric sizes to 24x30 Ole Tjugen's Avatar
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    Re: f4.5 vs f5.6 - LENS HELP!??

    With such wide-angled lenses, the corners are dark anyway - unless you use a Fresnel calibrated to that focal lenght.

    Mine is a 90mm f:8 Super Angulon. I have found it relatively easy to use, even on 5x7".

  10. #10

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    Re: f4.5 vs f5.6 - LENS HELP!??

    I used to have a Super Angulon 5.6/90mm and now have a Grandagon N 4.5/90mm. I can't see any (significant) difference between them.

    As for slide film, Velvia 50 is still my best choice.

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