MPC Calculator

Extras - MPC Calculator

Exposure change for new enlargement

( / ) ^ 2 x =

( New Length / Original Length ) ^ 2 x Original Time = New Exposure

Exposure change by f/stops

x (2 ^ ) =

Original Exposure x (2 ^ Number of Stops) = New Exposure

Dilutions

@ 1 + = :

Volume @ 1+Dilution = Stock : Water

Percent Solutions

Stock A Strength Stock A Quantity

Required Strength

Stock B Strength Stock B Quantity

Filter Settings

Y: M:

Y & M filtration for Paper, Enlarger, Grade selected

Centigrade and Fahrenheit conversions

DegC= DegF

DegC = (DegF - 32) x 5/9

Grams, Grains and Ounce conversions

grains = grams = ounces

grains x 0.0685 = grams = ounces x 28.35

Millilitres and Fluid Ounce conversions

fl.oz (uk) = ml = fl.oz (us)

fl.oz (uk) x 28.4 = ml = fl.oz (us) x 29.6

Litres and Gallons conversions

gallons (uk) = l = gallons (us)

gallons (uk) x 4.55 = l = gallons (us) x 3.79

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Darkroom calculations based on Tim Rudman's Reference Data in The Photographers's Master Printing Course.