Evening light : GTO

[cjogo]

Long exposures of the Teatro in GTO ~ MX

[cjogo]

Under 4 minutes .. on these ..just a street light glow for exposure -- minus development....

[Eric Myrvaagnes]

Lovely examples of exposure and development being right on.

[cjogo]

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.

[Eric Myrvaagnes]

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.