The Massive Dev Chart
The world's largest film development chart

Product Information
Technical data sheets, msds & specs

Learning Zone
Test reports, articles & guides

Formulas & Data
Mix your own chemistry & other useful info


Links Meta-Index
Useful web sites and information links

Lab & Service Guide
Where to go for quality results

Where to Study?
Find universities, colleges & workshops

Books & Magazines
Editor's selection of the best titles

Files & Software
Applications, utilities, guides & instructions


The Digitaltruth Forum

Photo News Blog

Subscribe to Newsletter

Join us on Twitter

Visit our Facebook Page

Digitaltruth Photo Supplies
Your local photo store online, always supplying the latest stock and lowest prices.

  • ECO Pro Darkroom Chemicals
  • ECO Pro Darkroom Chemicals
  • ECO Pro Darkroom Chemicals

View products...


View products...


View products...

Check out our darkroom and studio photo apps:

Massive Dev Chart Timer
Darkroom Lab Timer
Shotlist Assist
Darkroom Formulas
f-Stop Printing Calculator

Darkroom Rat

Check out other cool t-shirts, jewelry and accessories at:

Shotlist Assist

Shotlist app for iPhone/iPad

Ideal for studio photographers, useful in the field too!

  • Lighting Diagrams
  • Drag & drop interface
  • Store shot info
  • Attach example images
  • Save presets
  • Export all data
  • iCloud sync

Now fully compatible with iOS9 and iCloud sync!

More info

Darkroom Lab Timer


Darkroom Lab Timer is now available for iOS devices from the App Store!

Designed for COLOR processing (C-41, E-6, RA-4) as well as other paper and film development techniques, Darkroom Lab Timer complements the Massive Dev Chart Timer by providing facilities for color darkrooms alongside advanced features for b&w, such as individual step agitation and up to 25 timer phases...

Read more in the Digitaltruth Photo Blog