Developing Rollei infrared film

[rogerzilla]

Paterson recommend 6 min at 20 deg C in Aculux 3. My "reference shots" at ISO 400 unfiltered were almost invisible. The IR shots (ISO 4 with an R72 filter) had all the detail but were still pretty thin, and very low in contrast. Turning the contrast right up to get usable images shows some scanning artefacts such as banding:

The frame numbers are also very light; has anyone else found a good developing regime for this stuff?

Photo taken with a Leica M3 and an Elmarit 90/2.8 using f/11 and 1/8 sec, guesstimated focus shift.

 

[f16sunshine]

I've dunked it into Tmax developer 1:4 at 24c for 7min normal agitation (20 inversions to start then 2 every minute). Exposed at iso 25 with Hoya R72 filter. When I use this film unfiltered I expose it at iso 200 same development . It's a bit high contrast with the technique I use but the negs print well and have that IR look.

 

[Frontman]

I got my best results with Rollei IR400 by shooting at ISO 25 with a Hoya R72 filter, and developing in Microdol (Ilford Perceptol or Fuji Microfine are similar) at 20c for 9 minutes. Photos were sharp, with great contrast, and strong IR effect. I scanned with an Epson V750 using factory settings. For good IR light, I shot in mid-day in the summer.

Gear consisted of an Olympus OM4Ti and OM 35-70 Zuiko zoom lens. Some parts of the images are blurry due to lots of wind and long exposure times.

 

[thegman]

I've shot it at ISO 25 and 50, sent it off to a lab with no special instructions, so I believe they just developed it in D76 at the 400 ISO time. Came out nice to my eye, high contrast, which is much what I'd hoped for.

 

[Moogie77]

I got my best results with Rollei IR400 by shooting at ISO 25 with a Hoya R72 filter,

These results look really amazing.

Miguel

 

[Moogie77]

Dear forum friends,

Is the iso reduction to 25 already covering the filter compensation or would this be needed to done in addition?

E.g. my B+W IR filter says on itself 20-40 filter compensation but when I measure through the M6 with and without filter I only receive 4 aperture values difference.
Which would be same like reducing from iso 400 to 25...

Thanks to evrybody for any insights,

Miguel