General question regarding bins whose focus knobs become stiffer/tighter/harder-to-turn when the temperature becomes colder. I presume this is due to the type of grease/lubricant used by the manufacturer and not a mechanical problem.
Both my Pentax 8x32 DCF SP and my Browning 8x32 bins exhibit this behavior. On really cold days, say this morning when it was in the teens, these bins become effectively unusable.
Is this fixable? If so, by whom? The manufacturer or a third party repair center or me?
Thanks.
I did read that AP says they warm up in hand and turn easier but I guess I have not experienced that behavior.
Do the Pentax 8x32 DCF SP have a specified range of operating temperatures? If it's inside the range then you'd expect warranty to cover it. I can't say I've seen one outside of M22/M24 mil specs for those bins.
I suspect it is the grease thickening though differential expansion or shrinkage might be an issue e.g. rubber is an odd material that expands as it cools. There isn't anything binding of the knob is there?