Spotting scopes

[brian fleming <>]

A comment on zoom eyepieces.

Unlike most camera zoom lenses, they do not remain in focus as you zoom. 
I suspect that this is because there isn't much room for mechanism and 
several lenses in such a compact unit. Even allowing for improvements in 
the 5 years or so since we bought ours following an optics day put on by 
BA, when even Leica and Swarovski had to be refocussed, I suspect that 
this is still the case.
And the bigger the lens, the more light gets in - essential for antiques 
like me.
Brian Fleming
Melbourne
===============================
www.birding-aus.org
birding-aus.blogspot.com

To unsubscribe from this mailing list, 
send the message:
unsubscribe 
(in the body of the message, with no Subject line)
to: 
===============================