[LargeFormat] Polaroid film

[Stan McQueen]

At 03:20 PM 5/21/2003, Jim wrote:
>At 02:50 PM 5/21/2003 -0600, Stan McQueen wrote:
>
>>Polaroid has both sheet film and pack film. You want the sheet film. I 
>>particularly like the Type 55 PN film, because it give you both a 
>>positive and a negative which, after clearing in sodium sulfite solution, 
>>can be printed or scanned.
>>
>>Stan
>
>
>If you want both a Polaroid print and a real negative, you have to use two 
>sheets of film because the exposure is different for each. You have to use 
>the given ASA for a good print and cut the ASA in half to get a good 
>negative. Here's what Polaroid says:
>
>"When you expose 55P/N you can get either a good negative or a good print 
>from one sheet of film. You cannot do both. This is because the speed of 
>the negative and the print is different. Usually, a good negative has an 
>effective ISO of 25-40; the print-an effective ISO of 80-160."
>
>Jim

True. I almost always expose for the negative. Usually at 40.

Stan

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