just wanted to post this enquiry concerning cold weather focusing on high end binoculars.i know leica bins dont have any lubricant inside the focusing mechanisms to aid use in cold climates but how do swarovski,nikon,opticron etc cope with these cold winter days and nights.any comments on the above would be very helpfull,matt. [still not a proper birder]
i use leicas, and have noticed no change in my focussing, even though the temprature is -0c and below on some mornings.
My Swaro 8.5x42 EL's get a little sticky when it gets below about 20 degrees F.
Bill