Re: slit cameras?

Tom,

I have found that the slit nearest to the film plane (i.e. the inner slit)
shapes the image contortion significantly more than the other slit. Is this
your experience as well?
Also, do you have any explanation why in some slit configurations there is
a lot of banding (thin black lines) forming over the image?

Regards,
Brigitte.

                                                                                                                                
                    "Tom Miller"
                    <twmiller@mr.net> To: <pinhole-discussion@pinhole.com>
                    Sent by: cc:
                    pinhole-discussion-admin@p Subject: Re: [pinhole-discussion] slit cameras?
                    inhole.com
                                                                                                                                
                                                                                                                                
                    07/11/2001 04:54
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Hi Mac,

The format for the two images is 4x5. The rule of thumb I heard was
to "meter the scene at f90 and give it two more stops." This gives
exposures of 1 or 2 seconds in bright sun with Ektachrome 64T (EPY).
The few pinhole exposures I've made with 4x5 EPY were in the 16 second
range. Naturally the slit exposure times can vary depending on the
width and length of the slits; but I've found that this rule of thumb
works well in almost all cases. (Also, I have a lab cross-process the
EPY film to C41 and use the negative image to make color prints.)

Tom

----- Original Message -----
From: "SPRINGTYME" <fontpro@usa.net>
To: <pinhole-discussion@pinhole.com>
Sent: Tuesday, November 06, 2001 10:24 PM
Subject: Re: [pinhole-discussion] slit cameras?

> Hi Tom!
>
> Thanks!
>
> What format? Was this 35mm? I think I'd like to give this a try. How
do
> slit exposure times compare to pinhole? I'd gess a slit outputs a
lot
> more light.
>
> Thanks
>
> Mac:-)

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Received on Wed Nov 7 04:54:11 2001