Just developed my first pinhole photographs today. Built a 5x7 foam core camera and used containers in the bathtub to develop. I have a question on multigrade filters: are the filters used to adjust contrast the set I see at B&H that are magenta in color? They cost $20 for a complete set of 3.5" filters. Can I use them when making positves as well as negatives? I'm using Ilford paper for negatives. Thanks.
Chris
