The Photographer's Formulary 21 Step Sensitivity Guide is a transmission step wedge that is numbered. It is 1/2 X 5". It helps to determine your exposure times while working in the darkroom. This saves time and paper.
UPC: 675152903259
The Photographer's Formulary 21 Step Sensitivity Guide is a transmission step wedge that is numbered. It is 1/2 X 5". It helps to determine your exposure times while working in the darkroom. This saves time and paper.
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