用冲机冲洗底片，和手摇的标准时间一样吗？在时间和转速上应该怎样控制？

预湿是指罐体预热吧 5-10分钟，ilford建议在标准显影时间基础上减少10%的时间

JOBO 冲机建议，黑白胶卷至少预湿5分钟，后面的显影时间和手动冲洗的一样。
转速75转/分钟。

[2011-01-18 22:30 补充如下]

http://www.jobo.com/jobo_service_analog/us_analog/instructions/instructions_process_b-w_film.htm

A five minute pre-rinse of any black and white film works with the developer to produce a negative with manageable contrast and good tonal range, using the manufacturer's recommended 'hand process' (intermittent agitation) times. To pre-rinse, put a quantity of process temperature water in the tank, equal to, or slightly greater than, the amount of developer. Allow this loaded tank to rotate on the processor for five minutes. At the end of that period, pour out the pre-rinse water, and pour in the developer. Pre-Rinse times shorter than five minutes may produce irregular development, and should be avoided.

If you do not want to use a pre-rinse, you will need to determine the appropriate developer time for each specific situation. Rotary agitation affects different film and developer/dilution combinations to differing extents. Some developing times may be essentially the same, while others are significantly shortened or even extended. As a rough guide, try shortening the developer time by about 15%. This could vary by anywhere from about -25% to +10% from the original 'hand process' (intermittent agitation) times. A five minute 'pre-warm' is recommended when foregoing the pre-rinse. This time allows the film, reel(s), and tank to stabilize at the development temperature, before the developing begins.

[2011-01-18 22:32 补充如下]

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我用JOBO CPA2 F檔連續滾動,測得的沖洗時間和一般廠商建議的差不多,

各別差異當然也是存在的

测个片头不久知道啦。理论上冲洗机要比手冲的均匀些？大篇幅的。

这里没有用冲机的大侠吗？