The Superior Es are advertised as "weather resistant," however, Nikon doesn't give any specifics about exactly what that means.
Rainman tests with the rain guards on and Mr. Freeze tests are helping define the limits, but I'm not willing to push it beyond that or I might end up with a permanently fogged bin, or if it defogs, one that develops fungus, which in either case, I will have to ship to Nikon for repairs.
With Nikon's "No Fault" repair policy, they would be "repaired or replaced" for $20, according to their Website, so if the experiment fails, you have a fall back plan if you didn't buy the SE new w/ warranty.
Having thinned my "herd" in a recession sale, I wouldn't like to be without the SE for weeks, so I will leave it to the brave BF bin testers to "Take it to the Limit".
However, now that I traded my 8x32 LX for a 505 8x32 SE, I will have to test its limits this winter.
To prevent fogging, I put my first sample (501) SE in my unfinished basement for a half hour (or hour if it's 20* or lower) and then I take it out, and do the same thing when transitioning it from outside to room temperature.
Never had a problem with it in 10 years. So I'm sticking with that procedure with the new sample. However, if it gets frostbite cold (0*F), the SE is going to stay nice and warm inside, and so am I.
Last year, I had the LX out in 0*F weather, and the focuser still turned smoothly, unlike the SE's, which begins to slow to a crawl at 32*.
However, even with giving the LX a "cool down" in the basement there was so much heat coming off my gloved hands and from my face under the ski mask, and perhaps from the bin itself, that the views were often blurred.
If I had stayed outside longer to achieve "thermal equilibrium" with the outside temps, the views would probably have steadied before I became frozen solid and a rescue worker pried the LX out of my "cold, dead hands" to see if any fogging had occurred.
That was my temperature test of the 8x32 LX, and I can report that an 8x32 LX in good working order can be used in 0*F, though this factoid would probably be of greater interest to a hunter than a birder since there weren't any birds outside on that bitterly cold winter's day.
Btw, the Nikon 8x32 from Adorama, which had jumped to $525 is now back to $499.
http://www.adorama.com/NK832E.html
Not sure what that means, has the BF SE frenzy come to an end or at least a lull?