Experience with Sun Tiger sunglasses

(David Sieber) wrote in message . com...
Amongst the Soaring Communitity does anyone have experience with Sun
Tiger sunglasses. I saw the ad in Soaring and wanted to cut through
the ad-hype. I would appreciate comments concerning the quality of
them filling prescriptions.

Thanks in Advance.

D. Sieber

David,

I also bought the Sun Tiger's though in my case it was just at the
beginning of the season this year. I had the progressive lenses made
and have found that the quality of the perscription was every bit as
good as both my clear and shaded sunglass perscriptions have been. As
others have said, the color shift takes a bit of getting used to but I
found that I made the change pretty easily. Picking out clouds, other
traffic and even thermals with slight amounts of dust that I could not
otherwise see, has become a breeze. I have also found that after a
full day of flying I don't have that slight headache caused by the
squinting that I always did even with a pretty dark sunglass. Lastly,
I like that fact that the glasses are not polorized. I don't get the
spots on my canopy that I used to see and since I was one of the folks
that bought a Cambridge 302 with the polorized glass that was 90
degrees out from normal, now I can actually see the instrument face
without performing contortions in the cockpit. Go for it - it's not
hype.

Jay Todd
3D

(Nolaminar) wrote in message ...
Some types of red lights will appear blue.
Bob Gaines

Sooo, Bob, now you can tell Alice that you thought you were at K-Mart
next time you're caught in the red light district. ; )

Come to think of it, I gotta get me a pair, too!

Ray

Wow! Lots of interest in this topic!

One of our members who has made a close study of optics, recommends a
very lightly colored polaroid for gliding. Particularly interesting
points being:

* a dark colour simply causes the eye to open wider to let in an
appropriate 'amount' of light. When opened wide the eye is very
susceptible to stray light coming from the side of the lenses, and the
depth-of-field is dramatically reduced. Keeping the eye small ensures
that maps, instruments and long distance focussing are likely to be
much easier.

* be certain that the lense stops UV (some offer little resistance!).
The lenses should be large in size to maximise the UV blocking.

* Sure, polaroid may have a problem under some canopies . . but this
will be well known for that particular craft.

Question for those advocates of the SunTigers (unlikely to be
available here): Have you compared them to polaroids with similar
colour?

(perhaps SunTigers are available as polaroid too?)

Cheers,

Jim Kelly
Australia.

Anyone able to comment on Polaroid vs SunTigers?

"Jim Kelly" wrote in
message u...
| Wow! Lots of interest in this topic!
|
| One of our members who has made a close study of optics, recommends
| a very lightly colored polaroid for gliding. Particularly
interesting
| points being:
|
| * a dark colour simply causes the eye to open wider to let in an
| appropriate 'amount' of light. When opened wide the eye is very
| susceptible to stray light coming from the side of the lenses, and
| the depth-of-field is dramatically reduced. Keeping the eye small
| ensures that maps, instruments and long distance focussing are
| likely to be much easier.
|
| * be certain that the lense stops UV (some offer little
resistance!).
| The lenses should be large in size to maximise the UV blocking.
|
| * Sure, polaroid may have a problem under some canopies . . but this
| will be well known for that particular craft.
|
| Question for those advocates of the SunTigers (unlikely to be
| available here): Have you compared them to polaroids with similar
| colour?
|
| (perhaps SunTigers are available as polaroid too?)
|
| Cheers,
|
| Jim Kelly
| Australia.
|

Thanks for your comments Henryk and Todd,

Looks like we three agree on not using *dark* sunglasses!

Cheers,

Jim Kelly


"Henryk Birecki" wrote in message
...
| Jim,
|
| there is a big misconception in what you wrote. For polaroids to be
| polarizing they have to absorb 50% of light, and then there are more
| efficiency losses. Sun Tigers are about 50% or more transparent
| (integrated intensity) so are likely to be "brighter" than
polaroids.
|
| In addition to spherical aberrations that you refer to talking about
| depth of focus there is also chromatic one. Suntigers shrink the
| optical bandwidth effectively reducing chromatic aberration.
|
| Using Polaroid glasses and liguid crystal displays is another trick
to
| be mastered as the latter also rely on polarized light.
|
| Cheers,
|
| Henryk Birecki
|
| "Jim Kelly" wrote:
|
| * a dark colour simply causes the eye to open wider to let in an
| appropriate 'amount' of light. When opened wide the eye is very
| susceptible to stray light coming from the side of the lenses, and
the
| depth-of-field is dramatically reduced. Keeping the eye small
ensures
| that maps, instruments and long distance focussing are likely to be
| much easier.
|
|