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How to reduce noise/grain in long exposure - Photography

I've tried some night photography, where I have exposed for more than 5 minutes (for star trail). And the photo became really grainy. Can anyone offer me any advice on how to eliminate the noise/grain? Many thanx!...

  1. #1

    Default How to reduce noise/grain in long exposure

    I've tried some night photography, where I have exposed for more than 5
    minutes (for star trail).
    And the photo became really grainy.
    Can anyone offer me any advice on how to eliminate the noise/grain?
    Many thanx!




    imagefactory Guest

  2. #2

    Default Re: How to reduce noise/grain in long exposure

    "imagefactory" <com.try> wrote... 

    Overexpose and underdevelop, maybe? Use a lower sensitivity
    film so that the reciprocity failure didn't affect you as much?
    Ask in rec.photo.film+labs as well, or talk to people in a pro
    lab about an alternative process. BTW, are we talking colour
    film or B&W? If colour, print or slide? I am guessing, print,
    because you use the word "photo" which generally is a replacement
    for "print". Ask the lab to print without density correction.

    AFAIK, prolonged exposure to low light does not by itself create
    more grain in the film. If that were true, grain would grow on
    film even while the film were simply stored in its canister.

    Victor


    Victor Guest

  3. #3

    Default Re: How to reduce noise/grain in long exposure

    Each film has a certain amount of grain. Can't change that. Some "fine grain"
    developers will eat away at the edges and make it a little less noticeable
    though. Grain shows up most in the middle greys, or pastel colors. If you want
    less grain, shoot scenes that run to extremes. All or mostly all, very dark and
    very light. Bob Hickey
    Hickster0711 Guest

  4. #4

    Default Re: How to reduce noise/grain in long exposure

    Make a try using slide film.

    Ming.

    ¦b Tue, 22 Jul 2003 00:33:57 +1000, imagefactory <com.try>
    ¼g¹D:
     



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