rollei IR development

[fungi]

hi,

i am interested in developing rollei IR in d-19 for increased grain and contrast, but i am having difficulty locating a development chart. i've cross searched with maco IR - no luck there either. any suggestions?

thanks, kim

 

[Travis Nunn]

http://www.digitaltruth.com/devchart.html

 

[fungi]

i've checked there already - no data for either rollei films, or maco films

 

[Thomas Bertilsson]

I guess a couple of test rolls would be in order, then. Since it's IR, I don't think there will be any 'real' truth to how to develop this film anyway, as it is a highly individual process. That's what I remember from using the Konica, Kodak HIE, and Ilford SFX anyway. I could not get good results without doing a test with major over/underexposure.

Sorry I can't be of more help,

- Thom

 

[Dave Miller]

When I first started using Maco IR film I didn’t get consistant results until I shot off a test roll. I simply set the camera up on a tripod and fired off a roll of 120 having taken a light reading at 100 ISO which suggested 1/30 at f22. This equalled the sunny 16 rule. That was my first exposure, and I worked through the roll, doubling the speed for each frame, but keeping the same aperture. The last exposure was around 1 minute. I developed the roll in Prescysol EF and then selected the best frame. This turned out to be the one taken at 2 seconds, which by my calculation rate this combination at ISO 0.75 from that I can happily calculate exposures for other lighting conditions. All this was using the opaque infrared filter, the number of which I can never remember, but I think it’s 780.
I think the film that Rollei are marketing is a faster version of the stock that I have, so my figures may not apply, although the test method will.

 

[colrehogan]

FWIW, there won't be any tables out there yet. This is a brand new emulsion that they are coming out with. My limited experience with the ISO 400 test rolls I got last year from Maco was developed as follows:

1 min water prewash, 2 changes of water
11 minutes D76 stock, 10 seconds agitation every 30 sec.
30 sec. water stop
3 min. fix
final wash 1 5 inversions
final wash 2 10 inversions
final wash 3 20 inversions

All was done at room temp (whatever it happened to be at the time)

This is how I develop my Maco 820 IR stuff and it works fine for me. However, you are using a different developer. I would take the advice regarding a test roll. And Dave, the Wratten 89B (Hoya R72) and the Wratten 88A seemed to work best for me. RG780 is the equivalent of the Wratten 87 and does work also.

 

[fungi]

hi everyone

thanks for your advice. it looks like i will be shooting a test roll sometime in the near future i was not aware this is a new emulsion rollei is using; i thought they had bought the formula from maco and remarketed with their name.

thanks again,

kim

 

[Ole]

There's a Maco IR 820c, and a Maco/Rollei IR820/400. I've done my 400 speed film in Neofin for 12 minutes, and it came out very fine (a bit contrasty, just as I like it).

Prewash 2min
Dev 12 min, two inversions every half minute
Dump in 100ml 50% ammonium thiosulfate at the end of development, agitate well (this is a lot more than needed).
Wash and dry.

 

[25asa]

XTOL trials

I was out shooting yesterday with Maco and took a new roll of Rollei IR along with me.
After shooting a roll of Maco, I loaded my first roll of the Rollei film and shot it as a test.

I use a Hoya R72 (=89B).

I did not find any recommendations for XTOL for this film, so I developed both in the same tank - XTOL 1+2 for 16 minutes. I understand that this combo is probably not correct for the new film, but it works great with the Maco. My first frame of the Rollei was exposed the same as I would the Maco. That negative is more than 1 stop too thin.

I think this new film might need more development rather than exposure. Here in these two frames with same exposure and development, the Rollei IR does not have as pronounced “Wood effect” as the Maco. (2 seconds @ f/16 with R72 and 4x ND Center filter.)

I think I will try a test series of exposures of the Rollei IR with XTOL 1+1 for 14 minutes to see if I can have better luck.

 

[Petzi]

Rollei IR has spectral sensitivity up to about 730 nm, Maco IR 820c had spectral sensitivity up to 820 nm. It is obvious that the wood effect can't be so strong with the Rollei. They are totally different films. Maco IR 820c was an Efke product, while Rollei IR is actually Agfa aerial film. The Agfa also has a straight characteristic curve, while the Efke had a very pronounced toe.

 

[25asa]

Today - Mostly cloudy but these were taken at near Sunny 16 Conditions when the sun came out from between them and gave distinct shadows.

1/30th second exposures with R72 filter.
Developed in XTOL 1:1 for 11 minutes.

I'm going to like this film.