Polaroid Type 52 Reciprocity Failure Characteristics

[jon w.]

Hello everyone,

Polaroid's data sheets give only (very rough) reciprocity failure

corrections in terms of aperture adjustment. Like most photographers,

I prefer to work with a constant aperture, and adjust exposure and

development times. I tried asking Polaroid about this, but was met

with blank silence.

I wonder if anyone has adjustment times for Polaroid Type 52, which I

shall be using for proofing night-time shooting, at indicated

exposures out to 2 and 4 minutes? If so, I'd be very grateful. I tried

searching the PN archive, but only found data for Type 55. The

relevant info. may be in Adams' 'Polaroid Land Photography', I guess,

but I can't find a copy.

[pvp]

It's right there in the datasheet on Polaroid's site:

 

http://www.polaroid.com/service/filmdatasheets/4_5/52fds.pdf

[silent1]

I just looked at the referenced data sheet; there's lots of information on how to correct for temperature, but I don't see anything related to reiprocity failure. I did, however, receive an error message; it's possible that document contains information Acrobat Reader 5 can't interpret...

[dave schlick]

from my experience in the past, polaroid film wont work properly on extended exosures.. i wont go over about an 1/8 second. but your meter should calculat the differnce, change asa,... so you can shoot at quick time and change exposure to what you want for regualar film.. the real loss is depth of field differences.. .. good luck.. dave

[jon w.]

As I said, the data sheet only gives adjustments in terms of increase in aperture, not in terms of exposure times. But if it doesn't work properly on long exposures, that would explain why. I'll just have to work around this. Thanks.

[pvp]

<I>I don't see anything related to reiprocity failure. I did, however, receive an error message</I><P>

It's on the page following the temperature data. As a fair-use plug for Polaroid's excellent data sheets, I present the following:<div></div>