will I see 8x10 infrared film ever again

[Jody_S]

The VR-100E is Konica Minolta made. Here's the datasheet - does it look similar to what you're using? http://image2output.com/media/pdf/hn_film.pdf

Thanks!

No, that's not an infrared film (?). I saw a couple of curves like that, and I decided to stick with infrared because 1) I like the look of IR, and 2) I thought color rendition would be unpredictable with that film. The one I have has a simple curve that ramps up from 600 or so up to the 1000nm range, in a fairly linear fashion. So it has higher sensitivity the longer the wavelength, therefore using a 820nm filter does not require exposure compensation over using a simple red filter.

I've tried locating the graph I saw just now, I'm not having any luck with The Google. I might have saved it on my office computer, so I might yet be able to find it.

[BetterSense]

I hope this does not break any rules, but i have a sealed, cold-stored box of 4x5 IR820 for sale in the classifieds section. I never did get time for the project I bought it for and now I'm moving.

I had good luck with the 35mm using stacked RGB rosco/lee color gels as a very cheap IR filter. Maybe you would notice an image quality problem on 4x5, but 35mm was too grainy for what I wanted anyway.

[Andrew O'Neill]

My supply of 8x10 IR is running low. I would definately be in if Rollie did a special run.

[uphereinmytree]

graphic arts IR film seems interesting. thanks for the info

[Jeff Bannow]

No, that's not an infrared film (?). I saw a couple of curves like that, and I decided to stick with infrared because 1) I like the look of IR, and 2) I thought color rendition would be unpredictable with that film. The one I have has a simple curve that ramps up from 600 or so up to the 1000nm range, in a fairly linear fashion. So it has higher sensitivity the longer the wavelength, therefore using a 820nm filter does not require exposure compensation over using a simple red filter.

I've tried locating the graph I saw just now, I'm not having any luck with The Google. I might have saved it on my office computer, so I might yet be able to find it.

Thanks for the tip Jody! I see the difference now, and have ordered some infrared imagesetter film to play with.

[Roger Cole]

graphic arts IR film seems interesting. thanks for the info

As cheap as it looks to be someone should start a small business cutting it down to standard sheet film sizes and reselling it.

[Jody_S]

As cheap as it looks to be someone should start a small business cutting it down to standard sheet film sizes and reselling it.

I think as printers abandon the imagesetter technology, there will be a lot of deals like I got, basically shops cleaning out their fridges of leftover film. I got mine from an eBay seller who had something like 15 boxes of 12.2" x 100', and I bought 3 of them for $10/ea. But with printing supply shops that are still selling their film as 'fresh', for use in graphic arts, the prices aren't nearly as interesting, though still comparable to X-ray film.

And, from experience, I can tell you it's rather tedious to cut these down to size in the dark. I have a no-name guillotine-style paper cutter on a particle-board base, I've drilled holes for stoppers at 10", 8", 5" and 4". So I cut off a 10" length, cut that down to 8x10, then cut the remaining strip into 2 4x5s. It takes me about 20 minutes to do 8 8x10s and 16 4x5s (out of 80" off my 12.2"-wide roll), including the time to load all of these into my film holders. I suppose I could cut the time down a little if I were doing hundreds, but it's still a precision job that has to be done to low tolerances, in the dark (I don't have a blue safelight, I have to rig something with blue LEDs I guess, like I've done with red LEDs for X-ray). And there's always the potential for scratches (nowhere near as bad as X-ray), not to mention you have to keep it right-side-up or use some means of punching notches into the film.

[Andrew O'Neill]

Jody_S could post an image you made with imagesetter IR film? I would love to see what these types of are capable of. Thanks!

[Jody_S]

Jody_S could post an image you made with imagesetter IR film? I would love to see what these types of are capable of. Thanks!

My first decent image is at post #187 here.

[Roger Cole]

Yeah, it's tedious and many of us lack both the time and the patience. Thus being willing to pay someone else.

Actually I doubt *I* would right now - I don't shoot sheet film other than 4x5, at least not yet, and I have two unopened frozen boxes of Efke 820, plus I can still buy Rollei new and fresh. But if I ever got into 8x10 (or any other size) that would be different.