So I had purchased two boxes of Rollei 400 IR film in 4x5 size two days ago. I couldn't pick it up because of work, so I had to wait until I had a break today. I was anxious to use this film, and already had the R72 filter waiting. I had heard many things about this film, and even saw a comparison between this one and the JCH (Japan Camera Hunter) film, where both had a similar IR look. The thing is, the JCH film is not available in 4x5.
The first thing I had heard was that the film was extraordinarily thin. It makes it very difficult to load into film holders and into developing reels. It turned out to be as thin as they said it was, and the notched corner was difficult to detect by feel. However, I didn't really struggle, it goes in easily enough. The danger is that it will curl too much and pop out, but it was flat. It might be another matter in 35mm format.
The other thing I heard was that it was not true infrared. I don't know where the light cuts off, but you have to use a good filter, and what that means is that, if you are relying on looking through a viewfinder, you won't see anything. However, I have an external viewfinder on my Travelwide 4x5, so I can compose easily. The big problem is that the R72 filter is completely opaque, so you have to have to open up a few stops or increase exposure times. I chose to increase exposure times, because with IR, the focus is offset as it is (light focuses at different distances in IR than with visible light), and you need to have a small aperture in order to make sure you preserve focus. The tradeoff is that I was not using a tripod, so I couldn't really slow down too much if handheld, because I would risk another kind of blurriness.
It was a very bright and, yes, even pleasant day. (I would not discover that Supreme Court Justice Ruth Bader Ginsberg had passed away today, and with Trump, I have no doubt he will try to ramrod another judge right before the election.) I went ahead and loaded the film and made some quick composures.
I choose to use f16, and I set my distance scale as normal, and I went for an exposure of 1/15th of a second. They say to rate it at ISO 15, so in sunny 16, just use the inverse of that. I didn't bracket. Also, I handheld my R72 filter in front of then lens.
After developing the photos, I was very, very pleased with them. I want to go out and buy two more boxes of this film. This is wonderful film, although my photos are, to be truthful, a little blurry when I zero in on them (i.e. expand the view). I can do better to try to control that, I can use a tripod. I think I might also be able to get away with 1/30th of a second.
One big thing I noticed: no violet smear on the negatives! I have been having that problem with the last batch of photos I have been developing for these past few weeks. I thought it might be due to several things, but I think I nailed it the last time, I think it is due to the poor quality control for the Arista 200 4x5 film I have been using. Today my Rollei negatives were clear, they had no violet smudge, and also, my HP5+ negatives had no smear. It is the Arista film, I think.
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