Yes, it does support various smart gestures. You can customise them.
Honor 8 has the wide aperture of f/2.2 for the rear camera and f/2.4 for the front camera.
Basis on my extensive use of Honor 8 for about 4 months, I can say that these are the biggest advantages of Honor 8.
01) Super Aesthetics
02) Superb Camera Quality
03) Good Internal Software
Yes, considering the display size and battery capacity, Honor 8 is quite light weight. It weighs just about 153 grams.