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, Sony α6000, G16 | EF: SY14/2.8, V20/3.5, 28/2.8 IS, Ʃ35/1.4, 50/1.8, 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, 70-300L IS, T28-300 Di VC PZD, Ʃ150-600 DG OS HSM S | E: SY12/2, 35/1.8 OSS, 16-70 ZA OSS, 55-210 OSS, SY300/6.3 ED UMC CS