"You will want to stop your lenses down to about f/4 to f/5.6 for work under dark skies with exposures ranging from 30 to 90 minutes. Two hours more more will work great at f/5.6 - f/8."
«Because 120 and 620 film is exactly the same size you can respool available 120 film onto a 620 spool and use your 620 camera without it jamming....and save yourself alot of money!»
«FilmDev is a website that tries to answer the question: "What will film X developed in developer Y look like?"»
