Luminous Landscape Forum
The Art of Photography => User Critiques => Topic started by: cjogo on January 31, 2014, 08:50:46 pm
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Long exposures of the Teatro in GTO ~ MX
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Under 4 minutes .. on these ..just a street light glow for exposure -- minus development....
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Lovely examples of exposure and development being right on.
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Lovely examples of exposure and development being right on.
Yes > nite images are very difficult.. You have such severe contrast... Long exposures will move those highlights past definition -- the development is so critical.. Film days also had a RECIPROCITY factor
30 seconds becomes 75 seconds N+1
1 minute becomes 3 minutes N+1 1/2
2 minutes becomes 7 minutes N+1 1/2
and on and on ::::::
*Contrast Increase:
*Shown is approximate contrast increase due to reciprocity failure and extended exposure. For example, if contrast increase is N+1 for an exposure, then with normal film development the negative will increase in contrast as if you had a N+1 development. Give the negative a N-1 development to compensate for the contrast increase due to the long exposure. However, sometimes you may want to increase contrast of a low contrast scene and give a negative normal development instead of a compensation development.
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I always kept reciprocity failure charts for my most often-used films pasted to the side of my 1-degree spotmeter. That was after messing up a few night shots because my guesstimates were too far off.
And the real beuty of sheet film was that you could keep notes on which sheets wanted N, N+1, N-1, etc., development. Much harder with roll film, where the entire roll required the same development.