Hello, I'm writing for any advice and knowledge on the use of colour filters and fogging in colour film photography. I wish to explore more the use and effects of colour manipulation within an image, but am in need of some hints and tips. I have attempted to play with direct exposure of sunlight and achieved marginal success. I also wish to experiment with fogging techniques within an image. I wish to achieve an outcome along the lines of some of the images by photographers such as ryan mcginely and marcelo gomes. In particular images such as the first image on this page Marcelo Gomes / David Byrne / Folha de S. Paulo the second and fourth images on this page http://marcelogomesphoto.com/lovefoxxx_s2a/ as well as the fogging achieved in the first on this page Marcelo Gomes / Taciturn Heart / Hassla Books and the majority of images on this page http://marcelogomesphoto.com/hobo_magazine/ any help would be greatly appreciated.