Any Rollei IR 400 Advice?

ChrisW · Apr 7, 2006

I just shot and developed 6 rolls of Maco IR 820c using X-Tol 1+2, 68 degrees, 16 minutes, just like the Mass Dev chart instructed. Perfect.

Some observations:

1. The Mass Dev chart shows n/a for 1+2 ISO. My advice is rate the film at 50.

2. The emulsion, using Ilford Rapid Fixer for 4 minutes, is super soft when pulled from the wash. Do not touch or wipe.

3. For 120 rolls, open, load, unload, and store in almost complete darkness. A total hassle, but the light ruined two rolls that were loaded in the shade. All others were handled in a closet that leaked a little light at the base. No leaks on the film.

Does anyone have advice on the 820c replacement Rollei IR film?

Travis Nunn · Apr 7, 2006

Thanks for the advice. I've got 1 roll of Maco left from last year and 6 rolls of Rollei. From what I've read, the Rollei film is 2 stops faster than the Maco.

Ole · Apr 7, 2006

I've shot the IR400 at ISO 400 in a Bessa-L (35mm, of course) metering through the Heliopan 695 filter. Worked just great. I develop it in Neofin Blau for 15 to 25 minutes, depending on whatever. Great combination.

Dave Miller · Apr 7, 2006

As you say Chris, the emulsion is soft when wet, but it doesnt improve much when dry either. Take great care how you store your negatives from this stock, Ive lost a lot to storage sleeve abrasions. Im hoping that the new Rollei version will have a harder emulsion.

Fotohuis · Apr 7, 2006

IR820c is an extended sensible (820nm) Efke100 film, some years ago special made for Maco.

Rollei IR-400 is a modern industrial IR film. Also 820nm but less sensitive in that area already. That's why you can also load into very subdue light. In fact for IR an easy film in handling and also possible to use it as slide film instead of the Scala 200 if you made the E.I. around iso 100-125.

It's much less grainy than HIE from Kodak, you can use it with 695nm or 715 nm "black" IR filters. E.I. is around iso 25 in that case.

Here is an example of the Rollei IR-400:
http://www.photo.net/bboard/uploaded-file?bboard_upload_id=29288584

It's available in 35mm, 120 rollfilm and 4X5" sheetfilm now.

Best regards,

Robert

Petzi · Apr 7, 2006

ChrisW said:
Does anyone have advice on the 820c replacement Rollei IR film?

The Rollei IR film is not a replacement for the Maco/Efke IR 820c film. The Rollei IR film is actually Agfa Aviphot aerial film (the 400 ASA version), and it is a panchromatic film with extended red sensitivity up to about 750nm. It has practically no sensitivity at 820 nm.

Regarding development, the data sheet has some information.

john_s · Apr 7, 2006

Petzi said:
The Rollei IR film is not a replacement for the Maco/Efke IR 820c film. The Rollei IR film is actually Agfa Aviphot aerial film (the 400 ASA version), and it is a panchromatic film with extended red sensitivity up to about 750nm. It has practically no sensitivity at 820 nm.

Regarding development, the data sheet has some information.

If it is actually an Agfa film, is it going to disappear when current stocks are used?

fatboy22 · Apr 7, 2006

Dave,

What are "storage sleeve abrasions"? I have shot a lot of this film and never noticed any problems after it was dry.

Jamie

Petzi · Apr 7, 2006

john_s said:
If it is actually an Agfa film, is it going to disappear when current stocks are used?

Probably not. There is still strong demand for aerial film, and Agfa Gevaert who market the aerial films are not affected directly by AgfaPhoto's insolvency. Agfa Gevaert have committed to making aerial films in the future. This was stated in a recent press release.

Dave Miller · Apr 8, 2006

The following link provides a little more information. Looking at the sensitivity graph does suggest that it falls away after about 750nm rather more than the Maco IR does.

Dead Link Removed

Petzi · Apr 8, 2006

Dave Miller said:
The following link provides a little more information. Looking at the sensitivity graph does suggest that it falls away after about 750nm rather more than the Maco IR does.

Dead Link Removed

At 800 nm it is down by 3 on the logarithmical scale. That is equivalent to about 10 f-stops.

Fotohuis · Apr 8, 2006

Which means if you can read on film data specs, that the Rollei IR-400 can be placed for IR sensitivity somewhere between the old Maco IR750c and the IR820c.

Rollei (IR-400 and other) data is available on the Rollei; Maco website and on their distributor website (In our case the NL-version).

thefizz · Apr 8, 2006

ChrisW said:
I just shot and developed 6 rolls of Maco IR 820c using X-Tol 1+2, 68 degrees, 16 minutes, just like the Mass Dev chart instructed. Perfect.

Some observations:

1. The Mass Dev chart shows n/a for 1+2 ISO. My advice is rate the film at 50.

2. The emulsion, using Ilford Rapid Fixer for 4 minutes, is super soft when pulled from the wash. Do not touch or wipe.

3. For 120 rolls, open, load, unload, and store in almost complete darkness. A total hassle, but the light ruined two rolls that were loaded in the shade. All others were handled in a closet that leaked a little light at the base. No leaks on the film.

Does anyone have advice on the 820c replacement Rollei IR film?

Hi, I have had only good experiences with the Maco IR 820c film. I load and unload 120 rolls outdoors with my back to the sun and only ever had a very small amount of fogging on the edges which didn't enter the frame.

I have not yet used the Rollei but will try it when my Maco stock runs out.

Peter

fatboy22 · Apr 10, 2006

I just ran my first good test on the Rollei 400 IR film 120 size. The film was shot at 11:00 in the mourning, the sun behind me, blue sky and no clouds. I rated the film at 100 and used a deep orange filter over the lens. My exposure was f11 @1/125. I developed my film in D76 deep tanks total darkness at 70 degrees , 18min. I got very nice looking negatives. The first time I shot this film I only developed it for 14mins and it was a little thin. It does need more developement time then the old Maco 820c. I will try to post some shots later this week. I shoot a lot of IR film, HIE, maco820aura, Konica 750, this has been a little tougher to test in.

Jamie

Any Rollei IR 400 Advice?

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