Anyone using Rollei Infrared 400 4X5 ???

Hi,

i bought some rollei infrared 4x5 film.

I would like to know where to start from.
This film is to expensive to do a lot of testing....

1) how would you rate the EI of this film (without filter).
2) i would like to develop it in D76/ID-11 dilution 1+3
has anyone has a starttime.

I will be using a hoya 720 filter which will cost me 5 stops of light.

Thanks,

Willie Jan.

Willie Jan said:

1) how would you rate the EI of this film (without filter).
2) i would like to develop it in D76/ID-11 dilution 1+3
has anyone has a starttime.

I will be using a hoya 720 filter which will cost me 5 stops of light.

Click to expand...

Hi,

I've just loaded my first trial roll (35mm) of Rollei IR-400 (a bit less expensive to test than 4x5, I suppose...). Obviously, I can't provide you with any results yet, but my thoughts are: rate at 400 ISO without filter (hey, that's what it says on the box!). I'm also using a Hoya R-72, and I'm also thinking of about 5 stops, so ISO 12. But then again, since it's easy on 35 mm, I will do some bracketing, at least +/- 1, maybe even +/- 2 stops. It's hard to tell with IR.

As for the developer: I'm planning to use the one suggested by Rollei, so no help from me there. Maybe the massive dev. chart has some suggestions?

The sun will be back this weekend, I hope to finish my roll of film by then. As soon as I have some results, I will share them.

It is the "new" Maco ir which is supposed to be a little faster. (and much more expensive.)

I shoot the old stuff at 1/2 asa, So I would start at 6 ASA with this and bracket on either side to see what is best.

Post some results, it would be nice to see what it looks like.

after googling around for a long time i saw somebody that rated it at 200.
So 6 asa would be a good starting point.

The older maco ir film (120 format) i used before i rated at 3 asa.


i am getting to use it for cyanotype, so the larger the better before i enlarge it with ortho film...

Rollei IR 400: my first results

I just developed my first roll of Rollei IR400 (35mm).

The good news: the infrared sensor in my EOS 30 doesn't fog the film.

Other good news: I'm glad I did a lot of bracketing, resulting in at least a few useable negatives.

My first guess was ISO 12, seems that the +2 bracket shots came out best (I did +/- 1 and +/- 2). So that would be ISO 3.

Then again, I've only had a look at the film that's hanging to dry, so it's hardly "scientific". Besides, I had some problems with temperature control during developing. Started at 20 C, after 4 minutes it was up to 22 C. In RHS / AM-74 1+12, the suggested time is 8:30; I shortened it to 7:30 because of the higher temperature; again, only a rough guess...

I'm happy with the first results. At least I've narrowed down the bracketing range for the next roll of film

Did you use a red filter or a black filter?

Petzi said:

Did you use a red filter or a black filter?

Click to expand...

Yes.

A "black" filter, Hoya R-72.

And as start of every bracketing series a shot at ISO400, measurement through lens, using orange filter. Well, obviously, that doesn't show any IR, but I thought it would be nice for comparison --- at least I would know where to start "counting" in case the rest of the shots would end up completely underexposed!

By the way - just had another look at the negs, and in some cases ISO6 looks better than ISO3. Well... hard to predict, of course. At least I've narrowed down the range quite a bit.

I bought 4 rolls of the Rollei 120 IR 400 film to trial. Using the Heliopan RG715 filter in bright afternoon sunlight, I found ISO 6 best, although 12 was printable. The recomended 25 was too thin. Today I picked up 3 boxes of the 4x5 version. Reading the labels on the boxes has me doubting if it uses the same emulsion as the smaller formats. On the box it recomends shooting at ISO 200 without a filter, not 400. With an opaqe filter it suggests ISO 64, not 25. I can see I'll have to test this at various speeds, as i don't trust using the results from the 120 film. I won't be able to test until the weekend, and only if the light is suitable. Has anyone found test results from the 35mm or 120 version applicable to the 4x5 film?