I'm not quite sure which sub-forums are best suited to filter questions. This is my best guess. I am going to try using B&W contrast filters, such as red, orange, yellow, green, etc, etc, etc. Since I don't have any at the moment, that means brand new purchase.... I can use some advise from more experienced folks here. I have lenses with filter ring anywhere from 52mm and up. Currently, 52, 58, and 62 but are likely to grow more. Looking around for options, I see Cokin system may be a good option as I can buy one set of filters (size P) and adapters to cover all but the fact the filters are made of resin concerns me a bit. Buying Hoya or B&W for every size seems very costly. Buying big one (like 77) and buying reducing rings are also quite costly. I don't mind spending reasonable amount of money for I'll be using them for long time, but I do want to do this wisely. How should I approach this? Any ideas or experiences will be deeply appreciated.