Darkroom Processing

Yr 11 Photography
Topics – Part 1
• Equipment and chemicals
• Safety
• Techniques
– Processing film
– Creating proof sheet
equipment
• Exposed film
• Film reel
• Developing (or Processing) Tank
• Scissors
• Can opener (to open end of film canister)
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
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
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)
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
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
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