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Darkroom Processing
Topics – Part 1
• Equipment and chemicals• Safety• Techniques– Processing film– Creating proof sheet
Darkroom Processing
equipment
• Exposed film
• Film reel
• Developing (or Processing) Tank
• Scissors
• Can opener (to open end of film canister)
Darkroom Processing
Film Loading Process
• In complete darkness (either darkroom or black changing bag)
• Open exposed film canister – remove one end (use can opener if necessary)
• Trim end of film for loading
• Load film onto reel – try to touch only film edges
• Slide loaded reel onto inner tube
• Slide a second reel (empty or loaded) to hold in place
• Place reels and funnel in developer tank – now light safe
• Add lid
Loading film reel Open film canister Loading developing tank
Darkroom Processing
Developing materials
• Chemicals– Developer (nickname: soup)
– Stop bath (e.g. acetic acid and water 1:30 ratio)
– Fixing agent
– Hypo clearing agent (also called Hypo eliminator)
• Measuring cup
• Thermometer
• Place to hang film
• Film clips
Darkroom Processing
Preparing chemicals
• Chemicals– Developer – 600 mls total
• 25mls Rodinal
• 575 mls water @ 20 degrees
– Stop bath• 600 mls water @ 20 degrees
– Fixing agent – 600 mls total• 60 mls Fixer
• 540 mls water @ 20 degrees
– Hypo clearing agent (also called Hypo eliminator)
Darkroom Processing
Developing procedure
• Pour developer into tank – temperature control is important (between20 – 21 degrees)
• Agitate using timer and then pour developer out
• Pour stop bath into tank – chemical or water
• Pour a fixing agent into empty tank – at this point safe to take lid off your tank – leave film for recommended time
• Rinse film with hypo clearing agent or water
• Hang the film (don’t touch negative surface)
• Leave for 2 hours to dry
• Clean tank
Darkroom Processing
Safety precautions
• Safety goggles• Chemicals are as safe as household cleaning
agents• Avoid contact with skin – rubber gloves, apron• Wash hands after using chemicals• Use tongs to transfer photos between trays• Use safe lights – red• Light indicator outside darkroom• Don’t eat or drink in darkroom
Darkroom Processing
Some Resources
• http://www.youtube.com/watch?v=Vu0Ul_wsYO8• http://www.youtube.com/watch?v=qAoQt5wLGjs&feature=related• http://www.wikihow.com/Develop-Black-and-White-Film