I use Photoshop to batch convert my RAW files to JPG.
With my particular camera lens, if I open the aperture all the way to F1.7, there is noticeable vignetting; images where the aperture is stopped down further do not have this issue. Since the aperture information is stored in the EXIF data, what I'd like to do is have Photoshop batch process all my RAW files, and anything that is at F1.7 should automatically have vignette correction applied to it, but not on the others (applying correction to the others would over-brighten the corners of the image).
Is anything like this possible using Photoshop? They are RW2 files from a Panasonic GF1 camera.