On Tuesday, July 22, 2008 at 4:07, bohonus wrote:
> > They work quite well for what they are, but are best used with Point
> > and Shoot type cameras as you need a very large Depth of Field to get
> > most of the mirror in any kind of focus. you also typically need a
> > lens that can focus within 1 foot or less.
>
> You don't focus on the mirror (unless you want a perfect image of the spots
> and dust on it), you focus on what the mirror is reflecting.
True so far, but the virtual image is not far behind the mirror if it
is a convex one. See
http://en.wikipedia.org/wiki/Curved_mirror for
details.
best regards
Erik Krause
http://www.erik-krause.de
