From: Kathryn Ramey (email suppressed)
Date: Tue Feb 23 2010 - 07:17:27 PST
Tom Comerford is really the expert on the pinholes for Bolexes. He produced a little pamphlet on it a few years back and a number of lovely films. He teaches at the School of the Art Institute in Chicago and may be willing to answer your questions via email.
In my own experiments I used an extension tube that I capped with black wrap with a hole in it made with a straight pin. I measured my focal length (the distance from the front of the lens/black wrap to the film plane) and knew (roughly) the size of the pinhole because my straight pins were .65mm (they are for sewing and thus precise). Then I used the following formula
f-stop=focal length/pinhole diameter
I ended up with an f-stop around 90 so I shot outside on a sunny day with plus-x reversal and had very good results.
Hope this helps,
Kathryn
________________________________
From: Bernd Luetzeler <email suppressed>
To: email suppressed
Sent: Tue, February 23, 2010 9:08:41 AM
Subject: Re: Help!
Hi
there are these laser-pinholes on Ebay:
http://cgi.ebay.com/Skink-Pinhole-Pancake-Pinzone-Kit-for-Canon-DSLR-SLR_W0QQitemZ380208388529QQcmdZViewItemQQptZCamera_Lenses?hash=item58862f99b1#ht_4663wt_1185
http://cgi.ebay.com/Skink-Pinhole-Pancake-Pinzone-Kit-Nikon-D90-D700-D300s_W0QQitemZ290405122416QQcmdZViewItemQQptZCamera_Lenses?hash=item439d7e8170#ht_5780wt_1230
http://cgi.ebay.com/Pinzone-Pinhole-Skink-Pinhole-Pancake-Nikon-SLR-DSLR_W0QQitemZ380208377622QQcmdZViewItemQQptZCamera_Lenses?hash=item58862f6f16#ht_4661wt_1185
this guy manufactures them with or without bayonette adaptors...
good luck
Bernd
On 23.02.2010, at 17:56, miriam jayne martins sampaio wrote:
Dear all
>wondering if anyone can give me some info on 16mm pinhole filmmaking? (with a bolex)
>
>thanks
>miriam
>
>
>________________________________
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