Title: COLOR CAST
Product review: I don't know its behavior with film, but with digital cameras, don't put 2 or more Cokin ND Graduated filters, one above the other. The magenta cast is awful and don't try to correct it by modifiying your in camera's color temperature: it will affect the non-filtered area. If one filter isn't enough, try the old and true Photoshop trick: with the camera in a tripod (ideally), take two -or more RAW shots, one for the highlights and one for the shadows (if I have no tripod handy, I use the bracketing and high speed in my camera to take a couple of pictures, trying not to move); then mix them in Photoshop and.... voila!!!! No need to bother with rings, attachments and delicate and easily scratched plastic filters.Added Feb. 3/09The previous review was done with the filters on Canon's 40D and 50D. I have now a Nikon D700 and the magenta cast isn't any more visible. May be ther is an issue with Canon's EF-S sensors.
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