6 Apr
2011
6 Apr
'11
1:17 p.m.
On 06/04/2011 20:10, Tony Duell wrote:
Leaf shutter (and diaphragm) blades must be oil-free
or they will stick
like crazy.
I was taught (by a optical technician) that some iris diaphragm and
shutter blades do get lubricated -- but only with a tiny, tiny amount of
fine graphite powder. About as much as you can pick up with a pin :-)
And only after you're sure they're clean (no oil).
--
Pete Peter Turnbull
Network Manager
University of York