Sunday, November 25, 2007

Samsung SHC-721A, IR testing

This video surveillance camera has a black & white mode. Usually it is meant for low-light conditions. According to manual, there's not clearly defined what happens in this mode. When lens is removed - in front of the CCD sensor - there is visible some filter foil. That has light green/cyan color. When BW mode is activated, a short "bzzztt" sound is heard. I assume that camera moves the filter away from top of sensor.

I decided to make some experimental testing, to see whether this camera was sensitive to IR. The target was hot soldering iron (Weller WTCP-s). The temparature in the solder tip is approximately +300°C. The equipment setup was:

Samsung SCH-721A camera
Nikon F / C-mount adapter
MF Nikkor 55/2.8 macro lens

results were recorded video clips:
1st, normal room lightning
2nd, very low light level
3rd, no room lightning

There is no IR sensitivity visible on 1st video clip. On the second video, IR radiation is clearly visible (brighter spot during heat-up cycle). This also shows the position of heating element inside of the solder tip. Third image shows the IR only, because there is not room lightning used. I was just wondering, where could I actually use this for. Has the sun some activity on the IR...? It remains to be seen, where this particular sensitivity is suitable for.


Samsung Toner Cartridges said...

First off I want to say that Im really upset that this blog was posted on my birthday and I didnt get to see it on my birthday! :)

retirement costa rica said...

some time ago I was looking to install this program on my phone, and so far I find, thanks for the information.