Glenn,
I've seen of these homemade gadgets in a store, but it used a Nikon BODY
cap, and apparently did not require a lens between the camera and peep hole,
just some unknown amount of extension. You could try it without a lens to
see how that looks through the viewfinder before moving it to a body cap.
Cheers,
Gerald
----- Original Message -----
From: "D. Glenn Arthur Jr." <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, March 04, 2001 6:55 AM
Subject: RE: glenn's peephole fisheye
> Peter Smith wrote:
> > Are you trying to make a pinhole Camera?
>
> No, I'm trying to use one of those lensed peepholes that mount
> into a hole you drill in your front door, that provides about
> a 180-degree field of view. Reeeeealy cheap fisheye.
>
> Additional info: Using a 55/1.8 instead of the 50/1.4, and
> 20mm extension instead of 12mm, things still aren't _sharp_,
> but they're a tad sharper than with the 50. Enough so that
> I can tell that I do have to change focus for different
> distances as one normally does. I'll have to get a larger
> lens cap to butcher, and some step-up rings, and try it
> with the rest of my lenses to find which works best for this.
>
> > If so you dont place the pinhole
> > in front of the lens you REPLACE the lens completely - so it should be
> > mounted in a (Black) body cap not a lens cap.
>
> *nod* I've got one of those, too (screwmount, but I plan to make
> a K one as well).
>
> > The small hole will give a very wide angle and large DOF so focusing is
not
> > an issue. It is unlikely that there will be sufficient light
transmission
> > for your camera's meter to register so long exposure and experimentation
are
> > the trick here. Also the precision of the pinhole will greatly affect
the
> > sharpness of the image.
>
> Field of view on a pinhole can be changed with extension tubes, BTW.
> And you're right about precision of the hole -- I've not yet managed
> to get one sharp enough in the thin sheets of brass I'm using (taped
> across a larger hole in the plastic body cap). Last time I played
> with it, I rubber-banded the screwmount body cap onto my Super Program
> and set it on auto. Exposure was right, but I need a cleane hole.
>
> -- Glenn
>
>
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