Attached Link: http://www.renderosity.com/messages.ez?ForumID=12379&Form.ShowMessage=1464041

In the earlier thread, we had a high contrast scene photographed in one-stop increments from (nominally) 3-stops underexposed to 3-stops over exposed. We showed that the camera "matrix" light meter may have been fooled by the very bright white siding near the center of the frame. We also showed that there is still much detail hiding in the highlights and shadows. Here, we begin to process the raw scans to bring the detail out. Each original linear scan was stored as a Photoshop 16-bit file. This is roughly equivalent to a RAW file stored from a digital camera. This sequence involves only adjusting the levels control in Photoshop to set the black point, white point, and gamma (center slider). The black point and white point were taken from the driveway and siding areas. The center slider adjustment was completely subjective. I tweaked until the image looked the best.

Again, not great Art, but at least more useable images. I'm not sure exactly what I accomplished with this next series. I went back and re-scanned the originals, using the optimized white points, black points, and gammas. Ideally, these should look identical to the adjusted RAW frames. [They do not, quite. Tomorrow I'll post both side by side.

That would make a great and extensive tutorial !