Non-IR specific Panchromatic Film with 720nm+ Sensitivity?

Gerald C Koch · Apr 4, 2017

Rollei Retro 80s is a repurposed aerial film. The extended red sensitivity is designed to cut through atmospheric haze. It is not an IR film per se. You would have to look at it's spectral sensitivity curve to see if it is possible to get the classic Wood effect.

olehjalmar · Apr 6, 2017

Gerald C Koch said:
Rollei Retro 80s is a repurposed aerial film. The extended red sensitivity is designed to cut through atmospheric haze. It is not an IR film per se. You would have to look at it's spectral sensitivity curve to see if it is possible to get the classic Wood effect.

I would suspect Rollei ATP is also really an aerial film. Does anyone know what it is, except being produced by Agfa? My gues would be something like Aviphot 40.

kb244 · Apr 12, 2017

So it seems Arista edu ultra 200 is non responsive to a B+W 092 (which allows more visible light than the hoya r72), all the frames I shot metered for iso 6 and bracket under a stop and up to 3 stops over exposed came out blank. But the B+W 090 (light red) do show up as do the unfiltered.

The SFX roll came out with every frame showing content (no surprises there ;p), though a tad on the dense side when metered for iso 10 (filter factor 20~40 taken into account) with an over and under bracketing.

Will print a contact sheet tomorrow, was at the campus well past closing getting rolls developed since I spent most of the time doing snip testing of Kodak 3302 ortho film to come up with a Dev time of 10 minutes for hc-110 dilution H (1:63) which was shot for iso 6, seems like my over +1 bracket is more on the spot with that.

NB23 · Apr 13, 2017

Foma400/arista edu 400 will work quite well

Punker · Apr 13, 2017

I have to try the Foma! Wow that looks great!

RR80s looks great with an R72. Meter around ISO 1.5.

Cloudy Day by Blurmageddon, on Flickr

kb244 · Apr 13, 2017

Punker said:
I have to try the Foma! Wow that looks great!

RR80s looks great with an R72. Meter around ISO 1.5.

Cloudy Day by Blurmageddon, on Flickr

Just a note, Foma 200 (aka Arista EDU Ultra) won't work, seems like it's specific to 100/400.

And a note to myself, focus normally with the B+W 092, re-focus to IR mark for Hoya R72. Seems when I re-focus to the IR mark, it's soft with the B+W filter, probably because much more visible light is coming into play, where as it works as expected when using the Hoya R72 with Ilford SFX.

A print earlier tonight from the frame using the R72 filter.

I'll probably order some more rolls of SFX for this particular purpose, noticed from my density and the exposure adjustment I made, that I should probably expose by an additional stop in direct sunlight conditions. (went with ISO 10 in broad daylight [filter factor 20], but my stop-over bracket seemed much more spot on). I have one roll of SFX left, but least I know I can't use either B+W 092 or Hoya R72 with the Arista EDU Ultra 200 (Foma 200) nor with Kentmere 400, even as I bracketed well beyond what it would be (no more than 1 second @ f/1.4 in direct sunlight) and ending up blank with either film.

mooseontheloose · Apr 13, 2017

Punker said:
I have to try the Foma! Wow that looks great!

RR80s looks great with an R72. Meter around ISO 1.5.

Cloudy Day by Blurmageddon, on Flickr

What a gorgeous shot!

darkroommike · Apr 13, 2017

The Ilford SFX stock filter, probably no longer available, was made to fit a Cokin gel frame. Looks a lot like a Wratten 29 to me, results are very similar. Tech Pan also had extended red sensitivity but that would be very slow with a WR 29! Any of the traffic or surveillance films or the old Kodak Aerocon films would also have it for the same reason the Aviphot films have it.

NB23 · Apr 14, 2017

SFX200 + 092 filter. I let my M7 do the metering. Developed in Rodinal 1+25.

For black people, extended red BW film is particularly well suited.

Punker · Apr 18, 2017

mooseontheloose said:
What a gorgeous shot!

Thanks!

I just bought some Foma 400 over the weekend to try. In my experience refocusing to the IR mark even with the R72 will make shots soft.

Andrew O'Neill · Apr 18, 2017

It's not necessary to focus to the IR mark with SFX, or Rollei IR. I don't even bother to when I use my dwindling stock of Efke IR. It was necessary though, with HEI and an opaque IR filter. I certainly wouldn't bother focusing to IR with Foma 400.
Please do post your results here, Punker!

kb244 · Apr 19, 2017

Andrew O'Neill said:
It's not necessary to focus to the IR mark with SFX, or Rollei IR. I don't even bother to when I use my dwindling stock of Efke IR. It was necessary though, with HEI and an opaque IR filter. I certainly wouldn't bother focusing to IR with Foma 400.
Please do post your results here, Punker!

Seems necessary if you use an R72 filter instead of a 092 (or unfiltered) , the focus shifts between the frames with 092/090 and R72.

Punker · Apr 19, 2017

Andrew O'Neill said:
It's not necessary to focus to the IR mark with SFX, or Rollei IR. I don't even bother to when I use my dwindling stock of Efke IR. It was necessary though, with HEI and an opaque IR filter. I certainly wouldn't bother focusing to IR with Foma 400.
Please do post your results here, Punker!

Will do!

I bought a guy's remaining stock of Macophot IR820c and even with a 740nm Wratten, no focus shift is necessary either.

Non-IR specific Panchromatic Film with 720nm+ Sensitivity?

Gerald C Koch

olehjalmar

kb244

NB23

Punker

kb244

mooseontheloose

darkroommike

NB23

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Non-IR specific Panchromatic Film with 720nm+ Sensitivity?

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