Great topic and I'd like to share my latest discovery: Tight fitting gloves available at the hardware store, elastic fabric with a neoprene/rubber grippy palm. These are cheap and great for photography as you can still feel all the little buttons, great from about -5 C up (but you'll need to put your hands in your jacket every so often to warm them). I also use them (another set of course) when I work on my car.
I have several different types but this picture gives a good Idea of what I mean. For photography purposes I use an all-black set.
5D3, 5D2, G5X, G16 | SY14/2.8, V20/3.5, 28/2.8 IS, Ʃ35/1.4, 50/1.8, 50/1.8 STM, Ʃ50/1.4 EX, 100/2.8L IS Macro, 16-35/4L IS, 24-105/4L IS, 70-200/2.8L IS II, 1.4x II, 2.0x III, T28-300 VC PZD, 70-300L IS, Ʃ150-600 OS HSM S