Now the temp is below freezing and will likely be that way for a while. Do you have any tips for outdoor cold weather photography?

Is glass adapting to the cold a problem? I know it is in telescopes but in the camera?

What about actually warm hand protection which is usable? I generally wear mittens which will not work with a camera.  Any suggestions?

With winter season in much of the 'rosity member's areas, any tips may be appreciated by all.

Thanks..really interested in workable and warm gloves...         TomDart.