On Tue, 05 Dec 2006 13:59:03 +0100, Gisle Hannemyr wrote:

With a DSLR????

Of course not - the way Bill Again describes the test only works
if the camera has an EVF.

But you can do the same test with a DSLR by taking a photograph
of a tv-remote while somebody presses a button on it that makes
it emit IR. When you review the image on the review screen,
you'll see the IR glow described.

That's a neat and useful trick that works with my Sony IR remote.
But an EVF isn't required, since the blast of IR shows up nicely on
the LCD display of Canon's A620 which has an optical viewfinder.
Also, there may be several DSLRs that can also detect IR without
having to take a picture. These are the ones that offer live,
real-time viewing on their LCD displays, and are manufactured by
Olympus, Panasonic and Leica.