Just to make another assessment after processing a cassette of Velvia 100 with the Tetenal 1 ltr kit. (Previously I only tried it on CR200) The 7.5 minute 1st developer does seem to be a little long, so for the next time I will reduce it by 15 seconds. Whilst the resulting Transparencies had a good black, the highlights were a little thin, more so than I would have expected even with Velvia with its inherent higher contrast. I will be able make a better judgement once they are mounted and projected.