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Thread: question about long exposure increased contrast

  1. #11

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    Re: question about long exposure increased contrast

    thanks all - Consensus seems to be yes but may or may not need to be compensated for and varies according to light (dim vs bright)
    and thanks to Doremus we all now have a way to increase contrast in the field vs development for low contrast scenes. Should be useful for Rocks and Roots scenes.

    Guess I will be testing on my next outing to see how FP4+ responds in my usual exposure times vs shorter.
    The mountain waters of North Georgia call out to me, I visit and leave only tripod holes behind. The Appalachian Trail is my treadmill and gym.
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  2. #12
    Steve Sherman's Avatar
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    Re: question about long exposure increased contrast

    Reciprocity does most have it's most impact in the mid tones, however, don't think for a minute by applying a ND filter of significance will replicate the gains of an exposure made during the low light levels of dawn or dusk, the light is simply different as the sun arches across in the sky. Photography, especially film photography will always be most impacted by the Quality of Light. There are resaons outdoor TV commericals are filmed in Sweet Light. As mentioned on FB, Sexton devoted an entire book to Quiet Light.


    Real photographs are born wet !

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  3. #13

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    Re: question about long exposure increased contrast

    On the subject of using heavy ND filters in sunlight...I've noticed, on the rare occasions when I actually do this - that I sometimes will get some strange artifacts resembling astigmatism, especially when using wider anger lenses. Using high quality B+W ND's. Never seems to happen in overcast conditions, and less so with longer FL's even in bright conditions. Anybody else ever notice this?

  4. #14
    Steve Sherman's Avatar
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    Re: question about long exposure increased contrast

    Quote Originally Posted by John Layton View Post
    On the subject of using heavy ND filters in sunlight...I've noticed, on the rare occasions when I actually do this - that I sometimes will get some strange artifacts resembling astigmatism, especially when using wider anger lenses. Using high quality B+W ND's. Never seems to happen in overcast conditions, and less so with longer FL's even in bright conditions. Anybody else ever notice this?
    Best educated guess, the severe curvature of the WA lens coupled with yet another glass surface of the ND filter affects some type of artifact or distortion as it exits yet again a dramatic optical formula to cover a large area of film. Years ago I noticed the shots I made with WA lens didn't hold the detail that a longer lens could when the subject matter was nearly the same final size. Particularily since the perfection of the Minimal Agitation technique this anomally IMHO leads me to almost never use a WA lens for my work. My seat of the pants 2 cents !!


    Real photographs are born wet !

    www.PowerOfProcessTips.com

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