Careful, you just pressed my nerd talk-button. > On Feb 8, 2023, at 9:09 AM, John Sessoms <jsessoms...@nc.rr.com> wrote: > > I'm thinking about having one of my older digital bodies (K20D) converted for > Infra-Red photography.
It can be a lot of fun. When you consider the cost of the conversion, I’d start with a K-5 or a K-3. > > Has anyone here on the list done that? Any recommendations? Yeah, when my K-5 died, I found a place that could repair it, and while they were at it I found they could also do an IR conversion, unfortunately the camera broke again and couldn’t be repaired. At some point I would like to get another one. I was just starting to get my techniques down when it died. I also have an old Lumix that I had converted, but they seem to have just put a visible blocking filter over the sensor and it had very low sensitivity. I’ve got my IR work posted in this collection: https://www.flickr.com/photos/ellarsee/collections/72157627107116082/ One of my primary goals was photographing dancing in low light without blinding people. Two accessories I made were IR pass filters for my speedlights, and a “hot light” made of grids of IREDs. It turns out that the IR hotlight was great for doing video in infrared. https://www.flickr.com/photos/ellarsee/collections/72157607728280926/ I also ended up buying a large sheet of IR pass plastic to use as filters over my studio strobes. I have a bunch left, so if anyone wants some, just let me know. It was a lot cheaper per area than buying the IR filter gels from B&H There are two ways you can go with the conversion. One is to replace the IR block filter with a visible block/ IR pass filter so that the camera only sees in IR, the way I went was to remove the IR block and turn it into a wideband pass. The theory was that I could get visible block filters for my lenses for when I wanted only IR. For some reason, on a wideband system the red and blue channels will pick up IR, but not the green. So IR will show up as magenta in images. I particularly enjoyed using an IR flash on images that also had colorful illumination. The objects illuminated by IR would come through as magenta, or could be color corrected to “black and white-ish”: https://www.flickr.com/photos/ellarsee/sets/72157659850152524/ When photographing people, you do need to be careful because different fabrics reflect and/or pass IR differently than visible, and sometimes people’s underwear will show up pretty visibly through their outer clothes. For more collections of my playing with unconventional lighting: https://www.flickr.com/photos/ellarsee/collections/72157627107116082/ this also has some early attempts to just use an IR flash and blast through the weak IR blocking filters on my K100Ds. > > -- > Vivere in aeternum aut mori conatur > > -- > This email has been checked for viruses by AVG antivirus software. > www.avg.com > -- > %(real_name)s Pentax-Discuss Mail List > To unsubscribe send an email to pdml-le...@pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. > -- Larry Colen l...@red4est.com sent from ret4est -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
