11:19 a.m. on October 18, 2010 (EDT)
I have two tents with windows and have used several others on expeditions belonging to other people. Several points, some of which are repeats -
- Even when brand new, the windows do not give a very clear view. They are not even "antique flow glass" optical quality, and since they do not have flat surfaces when the tent is pitched, the views are very distorted. Don't even think about shooting photos through them (unless you like abstract distortions, which can be very artistic).
- They do scratch fairly quickly, whether you pack the tent by folding, rolling, or stuffing. And after a few dozen packings and unpackings, they develop a bit of "frosting"
- I have not yet seen one made in the past 10 years or so that developed cracks, even along an apparent deep scratch line. The material currently used is pretty flexible, even in extreme cold. And I haven't seen any yellowing in ones made in the past 10 years - again, big improvement in the materials.
- They do collect condensation from your nightly perspiration and if you cook inside the tent (DO NOT COOK INSIDE TENTS! You have a good chance of dying from CO, oxygen depletion, or setting the tent on fire). They even collect condensation from sitting around drinking cups of hot drinks. The windows seem to collect condensation much more rapidly than the other parts of the fly material. Even using a microfiber towel to get the dew off, the water never seems to get cleared very well - lots of fine and large droplets left.
- In winter and in cold areas (Antarctica, Arctic regions, at altitude on cold mountains, etc), they frost over. Removing the frost with your soft microfiber towel seems to leave fine scratches in the plastic, plus (see "condensation" above) it never gets completely clear.
- You can tell if it is raining by looking at the window and seeing the raindrops (gee, I can tell without a window by just hearing the rain on the fly)
- You can tell if it is snowing by noting that your outward vision is blocked by white stuff.
- You can tell if that is a bear snuffling around your tent by the sloppy lick marks and saliva drips on the window.
- Views of the stars at night take on an artistic quality, reminiscent of Gaugin's "Starry Night" - this has been known to move tentmates into off-key renditions of the song "Starry Starry Night".
My current take on windows as currently implemented in tents - nice idea in theory, but doesn't really work in practice.