Macophot Infrared

bHeinemann

bHeinemann

Registered RF rookie
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5:45 PM
Joined
Oct 31, 2005
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25
Hey,

I just got a lens (75) for my 6 body I picked up in november (a very merry christmas!) and bought a few rolls of macophot infrared film...I have an r72 filter that I'm going to use and was wondering if any one has some good technical advice as far as ISO and exposure times...Also, I believe the developer that we have at school is the same as d76, so how should I develop it, or what should i buy to do so...If worse comes to worse I'll just play, but 8.99 a roll doesn't allow much playing :(

Any help would be really appreciated,

Bob
 
make sure you bracket the crap out of it! that's probably the most important thing for IR. use some of the starting points you'll find on the sites listed above, but having shots bracketed a stop in either direction goes a long way toward getting usable negs!
 
Haha yes, I shot a roll of it today. I used the meter at ISO 25, then I shot wide open at 3.5 at 60, 30..etc all the way down to bulb and did a 10 sec., 15 and 20 sec. exposure as well. I don't know how much light is getting through that r72, I'll upload anything I get this week.
 
hehehe...that should do the trick! i think there is also a correlation between "glow" and the exposure length. it has been a while, so i might be making this up...but i believe the longer the exposure...the more "glow" the white and black will have. that is to say that given two equivalent exposures (say f2 @ 60 vs. f2.8 @ 30)...the longer exposure (f2.8 @ 30) would yield more of a glow around pure white or black objects. again...don't quote me on this...as it has been a while!

personally i tried all of the IR films and found the konica IR 750 the easiest to work with, and got the best results w/ a dark red filter (not the full-on opaque IR filter).
 
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Is this a Hoya R72 and Maco 820c? I shoot that combo at ISO 6 in daylight with my Mamiya 7. I've developed it in Microdol-X 1+1 which worked very well, but it will probably develop just fine in almost anything and I'll probably use XTOL stock next time. The massive devchart is a good place to find a starting time and temp for whatever developer you use, although personally I like to knock 30-50% off the time since I don't like my negs all that contrasty. But it's a pretty easy film to work with, works nicely as a 100 speed film too in a pinch, just slightly red sensitive is all.
 
bHeinemann said:
Konica just stopped making IR 120 :(
Click to expand...

that's sad news! i guess i'll need to stock up! but i doubt that it will have much of a shelf life even in the freezer. crap.
 
my local shop still has some in stock. i just bought a couple rolls of 35mm a month ago or so. i should have picked up more. i'll have to see what they have left!
 
Well, metering it at 25 ISO seemed to give me the best results, the rest were way overexposed...heres a shot i took the same day though with efke 50, printed on ilford warm tone fiber paper...have to figure out how to upload it...haha
 
Just look under my gallery and you'll see it lol...take in mind that it's scanned on my little canon scanner here from the print not neg. The real print looks really nice, the scan is OK...I cropped it from the center because our large enlarger was down, couldnt get full frame on the others. Tell me what you think, reguardless lol...I'm going to re-shoot the location I wanted with IR tomorrow (sun glare killed my decently exposed neg :( ), and develop the negs...wish me luck!
 
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OK, I lied...25 ISO is giving negs that are too thin, I'm going to try and open up 2 or 3 stops more then the reading.
 
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