This would cause the entire image to shift blue. If stobes are being used to light the tree and ornaments the lights will be corrected but the tree and ornaments lit by strobe will shift to blue. To be done correctly, Em will have to double expose the film. One quick non-filtered strobe exposure with the treelights off and a timed exposure with filtration to get the lights and any light contamination they might throw onto the surrounding areas. This will probably be most easily done with the camera on bulb in total darkness. The camera fires the strobe upon initiation of the exposure and stays open until the lights have been plugged in for the exposure time appropriate to the aperture selected and then unplugged. Or simply terminate the exposure at the camera. r PhotoRoy6@aol.com wrote: > > In a message dated 1/3/03 1:39:34 PM EST, elf@cape.com writes: > > > Photoshop doesn't work for submission to magazines and stock agencies > > who only accept transparencies. > Of course there are film recorders but the cost $. I just got another > brilliant idea--if after your shoot the lights are still not the color your > want copy them in a slide copier with corrective blue gels.