On Fri, 20 Nov 1998 17:55:34 -0500, "Jim Harrison" wrote:

>I've set up to allow my wife to photograph birds at our feeder. However,
>I'm shooting through a sliding glass door which has double insulated glass.
>I'm loosing a lot of contrast and would like some advice. Is there a
>product to reduce the window's reflectivity or otherwise improve its optical
>performance? Suggestions please!

If she is using a long FL lens, there isn't much of a way around this
without improving the optical quality of the glass, alas... (think of
the door glass as two poor-quality filters with no coating added to
the lens...). A polarizer may help some, at least with the
reflections.