john010766 opened this issue on Sep 30, 2005 ยท 22 posts
Onslow posted Fri, 30 September 2005 at 2:03 PM
I think you will find that the camera has an anti aliasing filter on the sensor that blocks infra red light.
If you want to test a camera for sensitivity to infra red light to see if it is possible to take IR images (with a filter).
In a darkened room point a TV remote control directly at the lens of the camera. Set the camera to capture an exposure of several seconds duration eg 5 secs.
Press the volume control on the TV remote while taking the exposure.
If you get a bright spot on the exposure the camera will take IR shots, if not then it is not sensitive to IR light. The brighter the spot the better.
If you get a dull spot then it is somewhere inbetween try increasing the exposure, but keep in mind exposures will be very long for taking shots with an IR filter on.
Message edited on: 09/30/2005 14:04
And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies
live;
Their heads are green, and their hands are blue, And they went to
sea in a Sieve.
Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html