Re: New site pinhole

I was able to access those addresses this morning and see the camera and
the images. This is very helpful to me, in that my camera is about the
same in its relation between the inner circle and the focal length, and
this helps me see what needs to be done. Thanks all, for suggestions. As
far as I know, I'm building this camera for one picture only, it's not a
camera I intend to use a lot. So I sure hope that one image will be
worth all the time and reflection I've put into building the camera for
it.
Katharine

Pinhole Blender wrote:
>
> Katharine,
>
> Yes I said that. Here is the message I sent to Dirceu,
>
> ------------------------------------------------------------------------------------------------------
> Nice site. Thanks for including me in your links page. In Eric Renner's
> book on Pinhole Photography he says that to have a seamless blend of
> the images from each pinhole you at least need to have the radius of
> the center tube equal the focal length, then you can evenly space you
> pinholes 60 degrees apart on the outer can. I have found that this is
> the minimum focal length for seamless images but you can do longer
> focal lengths and still have seamless blends. I like the separation
> your camera makes but if you want to make it more seamless, try these
> suggestions.
> -------------------------------------------------------------------------------------------------------
>
> On Dirceu's website he had images of how he constructed his camera. Here
> is the link
> http://geocities.yahoo.com.br/dimaues/camerasexpo06.htm
> You can see how big his inner tube is compared to the outer tube, this
> coupled with the placement of the lenses will leave some black edges
> between the frames. You can see this in his images
> http://geocities.yahoo.com.br/dimaues/imagensbombom.htm . The black
> edges may work for some images. It looks like Dirceu's pinholes are
> spaced 90 degree's apart. Eric says to use 60 degree's, perhaps you can
> use a bigger circle with closer lenses. If you look in his book at David
> Lebe's cameras you can see a larger arc and holes closer together to
> give a nice blend to the image. If you don't have it, Eric Renner's
> book is a great addition to your library, I hear there is a third
> edition out now. On my directions page on my website you can see the
> size relationship of my inner tube and outer can. The link is in my
> signature.
>
> Chris
>
> --
> Pinhole Blender
> chris@pinholeblender.com
> http://www.pinholeblender.com
>
> > -------- Original Message --------
> > Subject: Re: [pinhole-discussion] New site pinhole
> > From: "Katharine Thayer" <kthayer@pacifier.com>
> > Date: Sun, December 19, 2004 10:30 am
> > To: pinhole-discussion@spitbite.org
> >
> > Did someone just say that to get a seamless image with a circular
> > camera, the focal length should be at least the radius of the inner
> > circle? I thought I just saw that, and now I can't find it.
> >
> > If this is true, then I'm going to need to abandon the camera I'm in the
> > middle of building and start over, so I hope someone will confirm this.
> > I was going by the formula that says that the image circle=focal length
> > x 3.5, so thought I was in good shape, but my focal length is only half
> > the radius of the inner circle.
> >
> > (I can't see the images that were being referred to in the lost post,
> > because the site doesn't like my browser and though I can access the
> > main page okay, if I click on any of the links all I get is a blank
> > grey page.)
> > Katharine Thayer
> > _______________________________________________
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Received on Mon Dec 20 09:23:12 2004