The Process of Photographic Negative Digitization and the Use of High Dynamic Range Software for Optimal Image Results

1. The Process of Photographic Negative Digitization and the Use of HighDynamic Range Software for Optimal Image Results A Case Study using the Hugh Morton Photograph Collection A Photographic Journey brought to you by the Digital Production Center

2. Terminology Dynamic Range: represents the amount of contrast a given capture device can record High Dynamic Range: compositing images to extend the dynamic range beyond the native capability of the capturing device Histogram: a simple graph that displays where all of the brightness levels contained in the scene are found, from the darkest to the lightest.

3. Terminology Histogram:

5. Histogram Examples

6. The Problem The dynamic range of sensors used in digital photography is many times less than that of the human eye and generally not as wide as that of chemical photographic media The most severe dynamic-range limitation in photography is reproduction to a paper print or computer screen

7. Example Negative Positive

8. Example Straight reproduction Hdr reproduction

9. How did we do that?!

10. Before and After Before HDR After hdr

11. Phase One Setup for Negatives Camera (lens and digital capture back) Negative in holder Sub-surface illuminator

12. Photomatix software interface

13. Before and After