Recovering LP from a photograph

[cpatti]

Would anyone have suggestions on how to recover a latent print from a photograph? I have a latent print on a photograph (kodak paper) that might be etched in. I have tried CA, powder, fluorescent powder and RAM without success. I have also tried photographing with different lighting techniques (direct, bounce, etc.), but I am still unable to capture the entire latent print. Is there a lighting technique that has worked for anyone in the past? Any help or advice on this would be appreciated.

[Tazman]

Maybe a high resolution scan and some Photoshop processing?

[Les Bush]

Hello from a retired expert in australia,

I would suggest to you the technique of RUVIS for latents on a photograph. Just google search RUVIS and you will see what is involved. I'm sure there would be some local precincts who would lend you their technology if your laboratory is without. Cheers from oz Les

[orrb]

Vacuum Metal Deposition. I just did some photographs a few weeks ago that had been processed with other methods. I was able to develop additional prints.

[Shane Turnidge]

Hi Cpatti,
I remember a case a few years ago where a fingerprint was visible in a photograph torn apart by a culprit at a B&E. I could see a print in oblique lighting but no development technique would visualize the print.
I contacted a Kodak representative who told me that photographic paper is made up of layers of gel. This supported my theory that the print was a plastic impression.
Using that information, the print was visualized by using an ESDA (Electrostatic Detection Apparatus) and then dusting the impression with magnetic powder. I'm pretty sure you would get the same results.

Shane Turnidge

[cpatti]

Thank you! These are all really great suggestions, and I will be checking with other labs to see if they have a device for VMD or RUVIS.

Shane- I have never heard of ESDA before. Is this the technique that you are referring to? http://www.youtube.com/watch?v=rKxx1bs7LyU

[Shane Turnidge]

Hi Cpatti, yes that's the device.

An ESDA is normally used to develop criminal writings on notepads where the original scripted note was removed. I've seen it used for footwear impressions also.
The method shown in the video is the same except that magnetic powder is applied instead of the powder/glass beads being poured across the mylar.
Good luck!

Shane Turnidge