Personalizing your film speed.

[suedgar]

Hi guys,
I read up alot about film testing and getting your personal development timings but there are many ways of doing so.


http://www.halfhill.com/speed1.html

this link here proposes one method of doing it. How about you guys? anyone wanna share on how they personalize their film speed?

 

[rogue_designer]

educated guesswork after shooting the same film and dev combination for a dozen years.

*shrug*

 

[kaiyen]

Well, this is how I did it for Delta 100...
http://photos.kaiyen.com/photoBlog/?s=delta+100

allan

 

[kaiyen]

oh, and generally it is more like educated guesswork. I call it the "sloppy zone system." shoot some film. look at shadow detail. Not enough? then rate it down a bit. at that point when you're happy with shadow detail, then look at highlights while developing. too bright? then decrease.

eventually you get in there. you have to make big steps, though - if not enough shadow detail, go from 400 to 250, not 320. you won't see the difference of 1/3 of a stop as easily with a small, 35mm frame. With development, go in 20% increments. Big steps to start, then start doing like 10% then even 5% changes as you home in on the right combo.

 

[sepiareverb]

Much like kaiyen, I get there with several tweaks of ISO, time, agitation.