The colour processing that we shall be using is the subtractive method. Using the subtractive filters of yellow magenta and cyan. In practise you will only use two filters at any one time, as a third filter will simply reduce the effect of the other two. In practise you will only use the filters magenta and yellow. …see full text
PDF: Colour Printing
Min Test Strip Print Size
Exposure: Aperture – start at f8, First Test Strip: 5,10,20,40 sec, Adjust aperture to target 20 sec exposure… see full text
A ring-around chart for neg/pos colour printing
Filtration data shows what to subtract from present filter settings if a print showing this cast is to revert to correct colour. centre of chart. Extreme colour shifts of SO a r e included here t o clarify differences between the six colours …see full text