ballsafire wrote:
I have received my new 85mm f/1.8 MANUAL focus lens and find that the rings (distance & focal) seems to be very tight and hard to turn. Do I need to "break them in" by rotating the rings till they feel looser? Do I put some DW 40 lubricating oil on the rings very sparingly? I am sure there are plenty members with this kind of experience. Thanks in advance! P.S. especially the ring one turns to set focus numbers for aperture--i.e. (1.8, 2.5, 3, 3.5, 4.5, 6, 10, 22)
WD40 is NOT a lubricating oil. The purpose of WD40 is to penetrate and wash out all lubricants and free rust from joints.
If you use WD40 on any joint, ultimately the joint will have no lubricant, original or otherwise. What little lube there is in WD40 does not stay in the joint as a lubricant.
It is called a penetrating fluid by those who use it properly. No matter what it says on the can.