Set of 6 Lee Color Print Viewing Filters for evaluating images and making exposure adjustments. Color negative and color reversal papers have different gamma ratings.
Because of this, prints from transparencies need twice as much filtration to achieve a similar color shift as those from negatives. This is why it is important to make sure you use the filter values from the correct side of the card:
Reviews LEE Filters 3 Density Color Print Viewing Kit