CH,
At 7:57 PM +0000 7/8/03, olympus-digest wrote:
>Date: Tue, 8 Jul 2003 22:25:32 +0800
>From: "C.H.Ling" <chling@xxxxxxxxxxxxx>
>Subject: Re: [OM] True, or just BS? (Effect of lost lens coating)
>
>- ----- Original Message -----
>From: "Joe Gwinn" <joegwinn@xxxxxxxxxxx>
>
> > >
> > >On the other hand I can't agree with the flare and ghosts, if you wear
> > >glasses you will know, a non coated glasses will have very high flare and
> > >ghosts in severe backlight situation and it is only one element, right?
>Ok,
> > >today most glasses are coated and you will not notice this.
> >
> > I have coated eyeglass lenses for just that reason, but there is a
>difference -- eyeglasses are not long, with multiple lens surfaces and
>baffles, all in a black tube. Too style-challenged.
> >
> > Joe
>
>So that is what I mean, the reflection can affect the image a lot even on
>top or bottom surface, not only internal surface or element will introduce
>flare.
I guess I didn't explain myself clearly enough. The point I was making so
indirectly was that the side of the eyeglass lens that's closest to the eyeball
is not shrouded with a baffled black tube (the lens barrel and camera body), so
light can just leak in from the sides. If you put your hands around the
eyeglasses, blocking light from the sides, the reflections in the lenses will
go away, even if the eyeglass lenses are uncoated.
Joe Gwinn
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