Testing Film Speed PDF Booklet

$5

You need to know how to make a normal contrast negative for any film, developer, and procedure combination you choose in your practice.

This is a visual check using a graphic arts step-wedge tablet and is best suited for darkroom printers using diffused light enlarging sources and sheet film cameras. It can be completed with just 2 sheets of 4×5 film and no densitometers.

For less than a cup of coffee, a downloadable 16-page reference guide to Testing Film Speed. It can be kept on file or conveniently on your phone.

SKU: DD02 Category:

How to test film speed and establish a developing time for normal contrast, without the need for a densitometer.

CONTENTS

Overview Film Speed Testing

  • Step 1 Modify Your Step Wedge
  • Step 2 Load Wedge and Sheet Film
  • Step 3 Make a Zone 10 exposure
  • Step 4 Develop your Test Film
  • Step 5 Find your Film Speed Index
  • Step 6 Find your Proper Proof Time
  • Step 7 Find your Normal Development Time
  • Results

Conclusion


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January 10, 2024

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Kym M Avatar Kym M
October 11, 2023

I was reintroduced to black & white film processing in Alex's 3-hour workshop. I booked a workshop as I hadn't done any film processing in 20 years, and I wanted... read more

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May 29, 2023

Alex offers a Complete Film Darkroom Workshop (1 day) which I attended yesterday. As a complete novice to the darkroom and 35mm format (B & W) this course has given... read more

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May 21, 2023

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April 13, 2023

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December 7, 2022

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August 7, 2022

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August 7, 2022

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June 7, 2022

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January 7, 2022

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