On Fri, 17 Oct 2003, alex wetmore wrote: > I was just cleaning up my office and came across my Hoya R72 IR > filter. I've used this a little bit with my Sony DSC-F717 and thought > I'd give it a try with the *ist D. > > From playing around in the house I have to say that it looks > promissing. My only IR sources right now are remotes and incadescent > light bulbs and the *ist D sees those just fine. Unlike my Sony > DSC-F717 it also autofocuses with IR and I seem to get reasonable > although not fast exposure speeds. > > I'll have to try this out in daylight.
I played with it a little more yesterday. The out of camera results are at: http://www.phred.org/~alex/pictures/pentax-ir There is nothing very interesting there except for proof of concept of IR working. The *ist D seems to capture all of the IR in the red channel (unlike my Sony DSC-F717 which also gets some in the blue and green channels) so the images are a little noisy. I posted these pictures onto the dpreview Pentax forum and one member converted this one to B&W: http://www.acart.net/IMGP1645_gs.jpg This is an area that will require some more exploration. I've never shot IR on film before (I've only played with it on the Sony DSC-F717) so it will take some time getting used to the longer composition times required with an SLR. On a digital P&S you can compose through the LCD and see what you are shooting with the filter in place. On the SLR you need to remove the filter to compose and then put it back to shoot...or just point and pray. The latter is what I did with these shots, since I was more interested in seeing if it worked than in going for good composition. The *ist D autofocuses in IR better than my DSC-F717 ever did. alex
