> I can't think offhand of any uses of aerial images in photography. After
> all, photography is about forming real images on photosensitive objects.
> They are a core part of telescope and microscope design where the
> objective forms an aerial image which is then magnified by the eyepiece.
>
It is possible to use an aerial image to focus both on something close-up
and far away. I think some behind the scene-programme of a (BBC?) wildlife
TV programme showed this. You project an airial image of the background in
the plane of a small subject (from the back) and take images of it from the
front. You actually need two aerial images (or, two back-to-back lenses with
an image inbetween) to prevent having a upside-down background.
Here goes asci art:
Background Lens 1 Lens 2 Subject Lens 3 Film
X
X | X | X | S
X | X | S | X
_____________________________________________________
Aerial Aerial Image of
image 1 image 2 subject and
Upside down background
Upside down
I tried it once. Very clumsy setup and the results were not that good (but
it does work).
Daan
Pictures of insects at:
www.kalmeijer.net
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