Thanks for the detailed write up. The images look great. You must have the patience of a saint.
I greatly envy your lighter x-ray film set up. My RB 67 can be a pain in the ass to lug around all day.
FYI for anyone interested, I got a iso-luminant (same brightness all across) image of the color gamut in HSL space, and took a photo of it with Fuji HR-U green xray film
Then lined up the spectrum image with the photo (adjusted to control black and white card points I included as well) and graphed out the sensitivity of the film by sample points, using the lightness of the B&W HR-U scanned negative
So I believe this is pretty much the spectral curve of HR-U, unless you know something I did wrong. I ordered some RX-N, I will do that one too later.
I was going to do the same thing with the curve I did above but for RX-N blue, but then I realized that unlike HR-U green, Fuji publishes a spectral chart for it:
Ummmm... has anyone ever tried RX-N ""blue"" film for infrared photography? It looks like it would be absolutely amazing at it if this is true?
Or am I completely misunderstanding, and the right side only shows the spectrum of an SLG-8U safe light? <--Yeah the more I look at it, the two Y axes have different labels. This is just the safelight.
ANYWAY, the left side of this is the spectral curve for blue xray film for you. I assume that in real life outdoor shooting, it gets some extra boost from UV beyond the left of this chart. If it can get through your lens.
Nice work!
I’ve also been spooling x-ray, but in my case 6” spools for my home built Cirkut panorama. I get one 6”x36” image per spool. These are more like 220, a paper leader and follower, but no film backing.
I bought a x-large rotary cutter reasonably online - great for the precision needed to get the paper cut juuuust wider than the spool
Even monkeys fall from trees -- Japanese proverb
Years ago now I cut some 8x10 Xray down to 5x7's and a strip just big enough for a little more than the image height (landscape mode) of a 35mm camera. I loaded some into reusable 35mm cartridges and took some pictures. I did not like how hard it seemed to advance the film using an Olympus OM-1, some of the internal parts are plastic of a "certain" age, and at some point I ran out of 1x8 pieces. Along the way I did get a bunch of usable images. I enlarged one, developed in Tylenol made into Rodinal, I think. It made a very nice 5x7 and that was cropped a bit so I suspect it would withstand considerable enlarging beyond that. The taking lens was the kit lens for the camera an F1.8 50mm, probably at f8 or 11 and I used the self timer for the exposure, so very little shake. I think this was all done with Ektascan-BRA mammography film that has/had an antihalation layer to it so I don't have weirder highlights than normal. The detail possible reminds me of a couple of rolls of Tech Pan someone gave me.
Bookmarks