Free tools
Calculators & Reference
- 39Tools
Most used
2
Before You Shoot
6
Planning and preparation
Film Finder
Answer 5 questions, get film recommendations
Film Replacement Finder
Discontinued film? Find the closest current alternative
Golden Hour Calculator
Sunrise, sunset, and golden hour times
Film Comparison
Compare film stocks side-by-side
Film Cost Calculator
Calculate true cost per frame
Timelapse Calculator
Plan intervals and clip durations
In the Field
8
Exposure and focus calculations
Sunny 16 Rule
Daylight exposure without a meter
Depth of Field
Calculate focus range for any lens and aperture
Hyperfocal Distance
Find optimal focus for maximum sharpness
ND Filter Calculator
Exposure adjustments for neutral density filters
Filter Factors
Exposure compensation for coloured filters
Flash Guide Number
Calculate flash power and distance
Bellows Factor
Exposure compensation for macro and close-ups
Lens Coverage
Check if a large format lens covers your film format
Night & Astro
2
Long exposure and astrophotography
In the Darkroom
10
Film processing and printing
Development Times
Find times for any film and developer combination
Process Timer
C-41, E-6, RA-4 and B&W: every step, agitation cues and chemistry tracking
Times by Film
Guides for every film and developer pairing, with temperatures and mixing
Push/Pull Guide
Adjusted development times for pushed and pulled film
Dilution Calculator
Calculate developer and water volumes
Chemistry Mixing Calculator
Mix stock solutions from powder concentrates
Zone System
Tonal control and exposure placement
Paper Grade Calculator
Match paper grade to your negative density range
Print Exposure Calculator
F-stop printing, enlarger height compensation, and test strips
Printing Calculator
F-stop test strips, split grade, grade changes, colour-head settings
Scanning & Digitising
6
Getting your images digital
Scanner Comparison
Compare scanners side-by-side
Scanner Chooser
Answer four questions, get scanning setups ranked for you
Negative Inverter
Turn a photo of a negative into a positive, in your browser
DPI Calculator
Scan resolution for your target print size
Print Size Calculator
Maximum print size from any film format
Crop Factor Calculator
Convert focal lengths between formats
Alt Process & Printing
1
Calibration and alternative processes
Learning & Reference
5
Fundamentals and conversions