IR Filter for Rollei Infrared 400: R72 or 093?

[Ron Marshall]

I plan to take some infrared shots with Rollei Infrared 400. I want a subtle to moderate IR look, moonshine or very slight Wood effect.

With that in mind, what would be a better filter choice for this film, Hoya R72 or B+W 093?

[Wallace_Billingham]

I would (and have) use a Hoya R72

[Ron Marshall]

I would (and have) use a Hoya R72

Wallace, how strong is the Wood effect with the R72 and Rollei?

[Andrew O'Neill]

I use a Kodak Wratten #29 for subtle infra-red effect.

[Ron Marshall]

I use a Kodak Wratten #29 for subtle infra-red effect.

Andrew, do you use it with the Rollei IR 400?

[Jim Michael]

We've been experimenting with Rollei IR and a B+W 092. The shoulder of the film's sensitivity and the filter's cutoff are pretty close with this filter and the ISO rating is about 8 (we developed in Pyrocat HD 1:1:100 10 min., minimal agitation). I don't think I would venture into anything with a longer wavelength cutoff. Of the two filters you named I would go with the R72.

[Diane Maher]

I have shot with this film (and it's Maco predecessors in LF) and would not recommend a filter beyond the Wratten 87.

In fact, the best filters to stay with for this film (IMHO) are either the Wratten 89B (equivalent to the Hoya R72) and the Wratten 88A (also known as the RG715). Even so, the ISO rating is 3 to 6, I believe. It's been a while since I've shot with these films and don't have my notebook with me.

[Ron Marshall]

Sorry, late night posting, I meant 092 but typed 093. The 50% transmission for the 092 is 695 nm, while that for the R72 is 720.

[Wallace_Billingham]

Wallace, how strong is the Wood effect with the R72 and Rollei?

well you get white foliage, and black skies and water.

If you are looking for a lighter effect than that stack a Red #25 filter with a 2 or 3 stop ND filter.

If you use a regular Red #25 with no ND filter the visible red light will pollute the IR effect to the point of having no wood effects at all.

Since ND filters have no effect on IR light it will all pass and the red filter will allow red visible light to pass but then it will be slowed down by the ND filter. The end result is that you will have just enough red visible light to balance off the IR to give a more modest look

[drew.saunders]

I've only used the Hoya R72 with this film, and found that it does have a more subtle IR effect than the Efke IR820C with the R72. I'm thinking it's too subtle for my tastes and will probably stick with the Efke, even though the Rollei is easier to work with.

Here's my IR set: http://www.flickr.com/photos/drew_saunders/sets/72157618657774764/detail/

The film used is mentioned in each description. The 2nd page has most of the Rollei shots that weren't spoiled by uneven development.

The Rollei is a faster and finer grained film, and not prone to scratching, so it's too bad that the IR effect isn't quite what I like. It works pretty well with no filters or with red or orange, but it's more of a normal film in that usage (but an ISO 200 film, not 400).

[Ron Marshall]

Drew, some nice shots, especially the pond shot that is next to last.