Are Fomapan 100, 200, and 400 supposed to have the same development time?

[mariam wael]

Hello,

Are Fomapan 100, 200, and 400 supposed to have the same development time when using Ilfotec LC29 at 1+19 in a JOBO CPE3 processor with rotation at 75 rpm?
Digitaltruth lists the same time for all of them (6.5 minutes), but that does not make sense to me.

I recently developed Fomapan 400 using this recipe, and the film does not look good to me. It looks like it did not develop evenly. Some photos look overexposed and some do not, even though they are on the same roll. When I scan the film, the scanner sees some frames as negatives and some as positives, and I am still confused about what I should do and what I did wrong.

Edited January 11 by mariam wael

[Steven Jackson]

they would not have the same developement time in standard processing so I can't imagine using a Jobo would change anything, however, it wouldn't necessarily make the film look developed unevenly...that sounds like a different problem entirely.  Doesn't the film come with a data sheet with developement times included?  The 35mm footage I bought did.

 

[Steven Jackson]

also, are you pre-wetting the flm before developing?

[Steven Jackson]

you need to post some examples to help diagnose what the issues might be.