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1992 vintage Trix400 shot at 200ISO in a Kodak Flash Bantam. I've used this camera before and last time used it was light tight.
Developer was Rodinal for 1hr--kinda semi stand. 30 second agitation to begin then one quick flip at 30 minutes.
I've used this method before with 70mm film but not 35mm. I was looking around and read this might be too slow agitation. Approximate flip every 3 seconds first 30 seconds.
Thank you for any help.
As other members here have correctly explained, it is bromide drag caused by too little agitation. This phenomenon as well as uneven development (without drags) often occur with stand development.
Stand / Semi-Stand development is a special technique for certain very special and rare cases, like decades old unknown film for which no development times are obtainable anymore.
It is not recommended as a standard procedure, because of the risk of bromide drag, uneven development, worse tonality (worse characteristic curve).
Often users use stand development to tame high object contrasts:
ADOX Rodinal is an excellent developer for that purpose, but it works by far best not with stand development, but with agitation. You have several different options to tame high object contrast with Rodinal:
1. Modify the standard agitation rhythm: After the initial 60s agitation and than one turn every 30s, use 1 turn every 60s. The density in the highlights generally reacts to the intensity of agitation, and with this less intensive agitation you will get a flatter, more compensating characteristic curve in the highlights with more highlight detail and less contrast.
2. Use a higher dilution: Instead of 1+50, 1+75 or 1+100 can be used. Result will be a more compensating characteristic curve in the highlights with more highlight detail.
3. Methods under 1. and 2. can also be combined if needed for very high contrast situations.
As always in BW film processing, the best method is as a first step to make individual tests with a densitometer to evaluate the characteristic curve. With that method absolutely perfect results (optimal EI, optimal tonality) for the individual needs of the photographer can be obtained.
ADOX - Innovation in Analog Photography.