<<I am interested in finding out if there is any way to obtain with digital cameras the effects obtained with film camera when using (1) polarizer filters and (2) infra-red film. Is there any filter, special effect or third party plug-in for Photoshop that can enhance an image in a way that it resembles the action of a polarizer filter ?>> Strictly, NO. It's frankly impossible. Photosho can't know diddly squit about the polarization angle of light passing through the lens. Is a high spot reflection due to a white surface or from a black but highly polished one? If you mean, can it give a deepen the blue of the sky relative to a shot without a polaiser, or can it increase the saturation of colours, well, that may be possible ... For pseudo-infra-red. The closest I've come is to play with the balance between the RG&B channels. Just using the red channel gets some of the way there, particularly if you add a slightly soft focus to account for the fact that most IR shots are not in perfect focus either (or should I say, lenses are not optimised for IR). Or I could be wrong as usual... Bob -- Whatever you Wanadoo: http://www.wanadoo.co.uk/time/ This email has been checked for most known viruses - find out more at: http://www.wanadoo.co.uk/help/id/7098.htm
