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Efke IR820 how do I develop is film?

Jeff Canes

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Efke IR820 how do I develop it? I have d-76, tmax, rollei high and low.

Digitaltruth list times for tmax mix 1+4 at 20c for 7 min’s and d-76 stock at 20c for 8 min’s both with no ref to the shot at iso.

The times on the rollei bottles for their IR film are with High speed shoot at 400iso 1+7 at 20c for 5 min’s and with Low speed shoot at 400iso 1+4 at 24c for 18 min’s

I have shot 2 rolls, with an 87C (IR) filter at 25iso. Do I need to need pull process? Would I decree the time by 4 min’s? Or change the mix?:confused:
 
ummmmm. Perhaps Helen can better answer this one. I've only shot the stuff at 400 with a 25, dev at box time in HC-110 dil b.

If you shot this on a bright day, I would definitely say pull the processing. I didn't get enough IR exposure the last time I shot it and most of the roll was underexposed by 1-2 stops.
 
I have shot quite a bit of this using a 720, 72 filter at F-16 for 1 second in bright light. Open up the aperature for less light. I developed it in Rodinal 1-12 for 12 minutes. Bill
 
I was hoping not to buy another developer but it looks like I’m going to need too, the Rollie Low is only developer I have that may work with the needed pulling time
 

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