Posts for: robertoates
Jun 22, 2013 17:54:22 #
Jun 22, 2013 17:53:23 #
Jun 22, 2013 17:52:19 #
Jun 22, 2013 17:50:09 #
Hello and welcome to UHH.
May 27, 2013 20:17:56 #
1)Apply Fluorecent powder (orange or pink ) to a sheetrock wall or magazine cover.
2) Use an ALS or Alternative light source. An alternative light source is strong LED light that produces different strengths of light or wavelengths of light, measured in Nanometers. This light will illumate/reveal the fluorecent powdered fingerprint.
3) The use of a colored filter is required in order to block or reduce some of the light produced by the ALS. An orange, yellow or Red colored filter can be used. The filter aids in viewing the fingerprint and when screwed onto the lens allows the print to be photographed.
The use of all three techniques above produced the print I submitted. It was inside a dark room on a sheetrock wall. I used a DSLR Nikon D300S, 60mm nikkor Micro lens.
These ALS light sources can also reveal body fluids, blood, bruises, and fingerprints. We use them alot for Crime Scene searches. I'm currently using the ALS to discover bruising under the skin thats invisible to the eye. Once the print has been photographed with and without a measuring scale. The print can be converted to a 1:1 ratio for latent print analysis.
2) Use an ALS or Alternative light source. An alternative light source is strong LED light that produces different strengths of light or wavelengths of light, measured in Nanometers. This light will illumate/reveal the fluorecent powdered fingerprint.
3) The use of a colored filter is required in order to block or reduce some of the light produced by the ALS. An orange, yellow or Red colored filter can be used. The filter aids in viewing the fingerprint and when screwed onto the lens allows the print to be photographed.
The use of all three techniques above produced the print I submitted. It was inside a dark room on a sheetrock wall. I used a DSLR Nikon D300S, 60mm nikkor Micro lens.
These ALS light sources can also reveal body fluids, blood, bruises, and fingerprints. We use them alot for Crime Scene searches. I'm currently using the ALS to discover bruising under the skin thats invisible to the eye. Once the print has been photographed with and without a measuring scale. The print can be converted to a 1:1 ratio for latent print analysis.
May 26, 2013 16:51:11 #
Awesome. I grew up in the burn't branch area, that's toward lydia. I then moved to Oates, Spartanburg for college and then to columbia. The photo was taken using flourescent fingerprint powder, an alternate light source, an orange colored filter over the camera lens to illuminate and capture the fingerprint. We use this techique on multiple colored surfaces to develop a fingerprint, photograph it, and then send the print for analysis. The fingerprint is invisible until the alternative light source hits the flourescent powder. Very cool.
May 26, 2013 16:43:08 #
So sorry for the late reply. The photo was taken using fluorescent powder, the use an alternate light source and orange colored lens filter. This is one technique we use to develop fingerprints off multiple colored surfaces for analysis. I hope this answers your question :)
May 25, 2013 10:14:21 #
Wow! How things have changed in photography in the past 50+ years. The digital age and photoshop technology have opened up new doors. I'm still getting use to digital. I'm really still getting use to photoshop. Thank you for your reply.
May 25, 2013 07:26:55 #
LOLLLLLLLLLLLLLLLLLLL! limit one use of fingerprint to evade prosecution ticket. Thanks for your rely.
May 25, 2013 07:00:18 #
I currently work as a Forensic photographer within a Crime Scene unit, but also enjoy general photography. I hope to really learn more other forms of photogaphy, techniques etc. from everyone. I'm really looking forward to meeting folks who are just as excited about photography as I am.
