Re: light gathering vs diameter of reflecting spheres

[Alan Zinn <azinn@xxxxxxxxxx>]

At 11:13 AM 7/6/2000 -0400, you wrote:
>Knowing next to nothing ---
>
>I'd like to understand the how reflectors might be used for panoramic
>imaging.
>
>A video camera was set up viewing a  3/4" diameter chrome steel ball
>bearing so that the ball's image filled the camera's vertical FOV.
>
>How does the diameter of a reflecting sphere affects light gathering?  In
>other words does a larger diameter ball bearing,  imaged to still fill the
>FOV, cause more light to fall in the image?   I'm ordering a 1" diameter
>ball to find out the quick way.  [The 1 " diameter ball is supplied by
>Small Parts, Inc. in Miami FL]
>
>Does anyone know of a supplier for precision ball bearings larger than 1"
>in diameter?   Any specifics on other commercially available curved
>reflectors other than ball bearings would also be of interest.
>
>
>Chas Stumpfel
>

Chas,

Maybe a dumb question but why not xmas balls? Also there are vacuum plated
"chrome" spheres at craft stores. I have some I used for a photo project
(not pans).

AZ


New Minneapols pans 6/30/00
Lookaround Panoramic Camera and Gallery:
http://www.geocities.com/SoHo/Gallery/8874/

Bob Talbot's Vagabond Camera web page
 http://www.st-abbs.fsnet.co.uk/vagabond/

Where's the camera? http://www.geocities.com/SoHo/Gallery/8874/passcam.html