David,
I have done some pinhole polaroids and have found that they are very 
sensitive to UV light. A glass lens blocks a lot of the UV but since pinholes 
don't have glass I use a UV filter and usually have to add some yellow 
filters too. This helps my balance a lot. I assume thats what you mean 
about "bad rolloff because of reciprocity". I use sample filters from a 
theater supply shop.They sell filter sheets like Lee or Rosco for cheap. 
Ask them for a swatch book. Also look for a swatch from "Rosco CIngell" 
This has swatches of all the correction filters used in color conversions.

Chris


>===== Original Message From DAVID WALTERS <wal...@prodigy.net> 
=====
>Evening, I apologize for the lag time on answering but
>I had a brief episode of file overload while trying to
>upload some pics (Sorry and thanks, Gregg). I have a
>pinhole from my last roll posted at
>"http://photos.yahoo.com/bc/wal...@prodigy.net/lst?.dir=/Photo+art&.src
=ph&.order=&.view=t&.done=http%3a//photos.yahoo.com/"
>("badge"), along with some other pieces of mine. The
>body cap is on my Canon EOS, I measured the distance
>at 49 mm and I'm using a laser drilled opening of
>.0102", this gives an f/stop of 163, I reckon. Using
>the bulb setting has given me fairly good results with
>Kodak film, although it seems to be able to meter
>through the pinhole. The Polaroid pinholes are from a
>Polaroid 210 with a hand drilled pinhole, I had such a
>bad rolloff because of reciprocity that I have stuck
>with B/W since. I might go back to color with the 210
>and stick to extreme sun in the future, we'll see.
>Thanks for the welcome, David Walters
>
>_______________________________________________
>Post to the list as PLAIN TEXT only - no HTML
>Pinhole-Discussion mailing list
>Pinhole-Discussion@p at ???????
>unsubscribe or change your account at
>http://www.???????/discussion/

Chris Peregoy
pere...@umbc.edu
http://userpages.umbc.edu/~peregoy


Reply via email to