감도400을 증감1600 헌상시간?

내사진은나만감동 2017/06/02 23:30

PUSH PROCESSING (B/W)
These are general guidelines when no published development times are 에이브이ailable. To use this chart multiply the published time at recommended ASA by the factor in parenthesis (ie. If Tri-X rated at 400ASA is normally developed for 6 mins in a standard soup, then when Tri-X is pushed three stops to 3200ASA development would be: 6 x 4.5 = 27 mins). Please use these recommendations as starting points only. In many cases these times will prove excessive, but when all else fails they can be a good guideline. Please note separate data for Tmax films.
Standard Developer
1 stop push = (x1.5)
2 stop push = (x2.25)
3 stop push = (x4.5)
Compensating Developer
1 stop push = (x1.4)
2 stop push = (x1.85)
3 stop push = (x2.5)
TMax Films
1 stop push = no change
2 stop push = (x1.33)
3 stop push = (x1.66)
*Compensating developers include Microphen, TMax, and any other developers which are specifically formulated for push processing

내사진은나만감동 2017/06/02 23:31

웹에서 긁어왔는데, 참고하세요.
필름마다 다르겠지만 전 한스탑마다 20-30% 정도 시간을 가감합니다.

1827 2017/06/02 23:34

포마팬은 암부가 별로 좋은 편이 아닌걸로 기억해서 생각보다 손실이 심할것 입니다.