Rollie IR400 Reciprocity

Film Photography & Darkroom discussion

Moderator: Keith Tapscott.

n2hhr
Posts: 1
Joined: Wed Jan 22, 2014 9:18 pm

Rollie IR400 Reciprocity

Postby n2hhr » Wed Jan 22, 2014 9:30 pm

Surely, someone has the true Reciprocity data for IR400! I have only found 1 chart out there and the values are too high to be believed

1m needs 9m
1m 40s needs 22 min
2 m needs 35 m


There really should be better info out there!

If you have any data please let us know

I want to do up to 10 m exposures along the ocean. Perhaps there is another better film for long exposures Ruth better Reciprocity values. Could any of you suggest a better film? I will be using
Ordinal.

Mark Hilliard

Markhilliardatelier ate lies.com
Thanks!

Mark Hilliard


Keith Tapscott.
Posts: 506
Joined: Tue Jan 17, 2006 8:58 am
Location: Plymouth, England.

Re: Rollie IR400 Reciprocity

Postby Keith Tapscott. » Thu Jan 23, 2014 4:43 am

It's something you will have to experiment with and bracket the exposures to find out.
I have never heard of the developer. Sorry if that's not much help.


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