From: Tony Conrad (email suppressed)
Date: Tue Feb 23 2010 - 07:23:32 PST
The f-stop (f/) of a pinhole can be calculated from its diameter (d) and the
distance from the pinhole to the film (D):
f/ = D/d
-----------t0ny
On Tue 02/23/10 8:47 AM , David Woods email suppressed sent:
> It's "T".
>
> The cleanness of the pinhole edge is of some importance; I tended to
> go for aluminium foil as the light barrier, and a nice punched hole
> which I checked with a magnifying glass before attachment to a
> modified de-glassed lens.
>
> Good luck
>
> David
> FROM: Experimental Film Discussion List
> [mailto:email suppressed] ON BEHALF OF mat fleming
> SENT: 23 February 2010 12:54
> TO: email suppressed
> SUBJECT: Re: Help!
> I've had some success with black wrap over a lens adaptor.
> If you don't have the luxury of testing exposure you can test at the
> processing stage if you self process. Of course you need plenty of
> light. Shoot slow and in the sunlight if you can.
> Another thing you can do is look at the image through the pinhole
> from the back with tissue paper in the gate to check what kind of
> field of view you have. It's fiddley and you either need the camera
> running or you have to turn the little knob near the speed control to
> "T" - or is it "I"? in order to be able to hold the shutter open.
> Mat.
>
> On Tue, Feb 23, 2010 at 12:26 PM, 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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