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Photographers' Formulary 09-0335 Step Wedge (4x5")

BH #PH45SW • MFR #09-0335
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Photographers' Formulary 09-0335  Step Wedge (4x5")
Similar model shown for illustrative purposes
Key Features
  • 21 Steps
  • Fits in Film Holder
  • No Special Adapters Needed
  • Available for 4x5 and 120/220 Film
The Photographer's Formulary 09-0335 Step Wedge (4x5") is an asset when trying to calculate exposure. The steps, corresponding to about a 1/2 stop, give you a complete look at what exposure would be at any given f-stop. This item will be especially useful to anyone involved in alternative processes.
More Details
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Expected availability: 7-14 Business Days
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This item cannot be canceled or returned.
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Is this step wedge regular, calibrated, or ...

Is this step wedge regular, calibrated, or calibrated and certified?
Asked by: Vitaly
The Photographers’ Formulary 09-0335 Step Wedge is a regular transmission step wedge designed for exposure/density reference and is not described as calibrated or certified, so it should be treated as a general step wedge rather than a precision-calibrated or certified standard.
Answered by: Nick Y
Date published: 2026-01-14
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