[Chaos-l] Canon IS Binoculars
Joseph Mack NA3T
jmack at wm7d.net
Fri Feb 1 13:46:18 EST 2013
On Fri, 1 Feb 2013, MSN wrote:
> I am considering purchasing Canon image stabilized
> binoculars in the 15x50 or 18x50 size.
do you know about exit pupil (about 3mm for these binos) and
day and night glasses?
Do you know your exit pupil at night? (about 7mm for upto
young adults, lessens with age. I'm about 5mm.)
> I have been able to try a 12x36 size but I also wanted to
> try the 15x and 18x
18x36 will have a 2mm exit pupil. Optimised for day.
Joe
--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!
More information about the Chaos-l
mailing list