Film Calculator

Film Development: The process of converting exposed film into a visible image using chemical solutions. This calculator helps determine development times, chemical dilutions, and processing steps for various film types and developers.

Chemical Dilution Guide

Stock Solution

100% concentrate
No dilution needed

1:1 Dilution

1 part developer
1 part water

1:3 Dilution

1 part developer
3 parts water

1:9 Dilution

1 part developer
9 parts water

Popular Film Types

Ilford HP5 Plus

400 ISO
High contrast
Good grain structure

Kodak Tri-X

400 ISO
Classic look
Versatile development

Ilford FP4 Plus

125 ISO
Fine grain
Sharp detail

Kodak T-Max

400 ISO
Modern emulsion
Fine grain

Film Development Tips

Always use fresh chemicals for best results
Maintain consistent temperature throughout development
Use proper agitation to ensure even development
Test your developer dilution with a test strip first
Keep detailed notes of your development process
Use distilled water for mixing chemicals

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Film Calculator

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