Learn how to use the film first before you embark on this path... And take my advice, this film has very very thin shadows with an IR filter, like the 72R. You could see how it pushes unfiltered maybe as a starting point...
Wouldn’t push more than one stop (from 100 real surface speed to 200).
You are already pushing two stops at box speed, which is clearly visible in the results.
IR speed will not move much though.
I did some promising experiments with preflashing and silver-nitrate pre baths last summer, to up the speed and flatten contrast.
No miracles though. One stop speed increase or so.
Regular speed is around 6-10 filtered with R72, depending on lighting, so not too bad.
EV 14 a light cloudy day is 60 @ f8.
Definitely handholdable.
You are just wasting your time and money. What is out there is good as it is.
Well I haven't pushed anything yet, I'm asking first before I waste my time and money.
If this is your first time using it, I'd recommend taking a series of six or eight shots at different exposures of the same scene at different exposures over different shutter speeds -- to test what exposure & development is best.
The pick the one you like best and fine tune the ISO &/or development with another short strip.
What you pick will be different from what the box says. You'll find that IR film usually benefits from bracketing in any event.
IR is pretty contrasty. I like to over exposure and under develop (PULLING) to try to tame it down. The shadows -- where there is little IR light, are usually very dark -- and the sun lit parts -- with lots of IR light, are usually washed out. PUSHING just makes things worse. You can always increase contrast later -- not the other way around.
Well said. I forgot to mention that there are different filters involved, as well as different IR films, and different developers. All this is why I suggested short strips of exposures the test the results. The manufacturers' recommendations are a good place to start, but they can be way off for your particular situation.
Although I have a 720 filter, I've had good luck with making my own IR filters with sandwiching red (25A) and green (X11) filters together.
Same here in northern Europe on a sunny day. I usually shoot it at ISO12 (external light meter) with an IR720 filter. Pushing the film would indeed push the contrast (crush shadow detail) way too much for my liking.My starting point for Rollei IR with a R72 filter is to meter at EI 12. That works pretty well in sunny New Mexico. If it’s cloudy, you might need to go lower because there is probably less infrared in the light.
My starting point for Rollei IR with a R72 filter is to meter at EI 12. That works pretty well in sunny New Mexico. If it’s cloudy, you might need to go lower because there is probably less infrared in the light.
Well I haven't pushed anything yet, I'm asking first before I waste my time and money.
Same here in northern Europe on a sunny day. I usually shoot it at ISO12 (external light meter) with an IR720 filter. Pushing the film would indeed push the contrast (crush shadow detail) way too much for my liking.
More importantly, testing is not difficult, time-consuming, or expensive. Get serious -- there is nothing "massive" about it. All you need is a little bit of film.
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