I’ve tried once more using the coat of gelatine and have been another failure. Exposure times so long, even hours against the few minutes without it; also stains and low contrast.
Same old disclaimer about the images taken from the web, if you to know about the author please let me to know.
Those are the attempts using gelatine, exposure times varies from 15 minutes to 5 hours.
Without gelatine, time varies from 5 to 15 minutes.
I think that I have accomplished a minimal of proficiency in the technique, some experiments more while I begun to explore the digital possibilities of these images. also have established some parameters for the use of my images digitally edited (solarizations, HDRs and others).