I recently purchased a Cokin P007 Infrared filter to use on my D100. I have shot a few images with it but am not sure what to do with them. The "raw" image is a monochrome image in shades of red. I have tried to convert to grayscale and the result is dark, although the infrared effects are visible. Any attempt to lighten the image or improve contrast detracts from the image. I was shooting in program (p) mode (full auto). I framed my subject and manually focused before attaching the filter since you can't see anything through the filter. Once the filter was in place, I clicked off the shot.
Do I need to use any exposure compensation since the filter significantly reduces the amount of light getting through. I am thinking +1.0-2.0 ev? What kind of post processing is usually done to get the spectacular IR images I see posted here from time to time. I think I'll try setting compensation to +2.0 ev and do a three-shot bracketing sequence with steps of 1.0 ev and see what happens.
Any pointers or links to tutorials would be appreciated. Thanks.