
how should i lubricate a collapsible lens?
1935 leica iii f
leitz elmar 50mm f3.5
everything works fine but the only problem is that the lens is very stiff when collapsing and retracting. when i first bought it it took a lot of effort to pull it in and out, but after a few weeks of owning it it seems to fluctuate between high effort and medium effort when collapsing it.
i imagine its as easy as rubbing some kind of lubricant on the barrel and working it in? im just not sure what kind of lubricant to use, or if that process is even valid. any advice beyond just telling me to send it for CLA would be greatly appreciated