Re: Optics and transitional lens eyeglasses

NewMexiKen wrote:
Many reviews of binoculars and spotting scopes emphasize the
importance of light gathering. Spending several hundred dollars more
in some manufacturers' lines results in brighter images. Yet, how many
birders (me included) look through their binos and scopes with light-
sensitive transitional eyeglass lenses. Even in relatively low-light
situations, my glasses get quite dark. To what extent does use of such
lenses cause degradation of the "rating" of birding optics. Has anyone
studied this?

Ken Schneider
Miramar, Florida & North Aurora, Illinois

Web site: http://www.rosyfinch.com
Blog: http://blog.rosyfinch.com
Photos: http://flickr.com/photos/rosyfinch

"Openness to the natural world and our response to it lie at the
core of what we do and why we do it." (Fr. Tom Pincelli)



I have a Zeiss 85mm scope and I bought it for it low light capabilities. I wear "Photo-Gray" glasses. I have not had any problem with the scope but I ofter remove my glasses when using my Binos. I do not know of any empirical studies on this topic and did not find anything like that while researching scopes/Binos.

--

Rick
Fargo, ND
N 46°53'251"
W 096°48'279"

http://birds2.shutterfly.com/


Remember the USS Liberty
http://www.ussliberty.org/




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Relevant Pages

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