Pronouncing acronyms (was Re: DEC acronyms)

Tony Duell ard at
Fri Aug 13 13:02:06 CDT 2010

> >> Concerning dismantling lenses in order to clean helicoids, diaphragm
> >> blades etc. you might be interested in Chuck Cole's opinions as
> >> expressed in the ManualMinoltaFree Yahoo group. Somehow I imagine you
> >> might disagree with him, or else you might explain your method of
> >> dealing with the issues he feels so strongly about...
> > 
> > Well, if he's suggesting spaying soemthing into the lens (yes, I have 
> > seen that suggested!), I certainly disapprove. If he;'s suggesting 
> > removing the optical elemenets and applyuing solvent/lubricantmix to the 
> > mount, then that's slightly better, but IMHO that's a method used by 
> > people who can't handle tools and small parts properly, and if you're not 
> > careful, it simply shifts the gummy lubricant, etc, elsewhere where it 
> > will cause toruble lateer. I really do prefer to clean each part separately.
> Chuck is also a regular contributor to the camera-fix group, and some 
> might describe him as, hmm, assertive perhaps, occasionally abrasive 
> maybe, and I've even seen someone describe him as arrogant.  His 
> attitude to cleaning focussing mechanisms would certainly not involve 
> any aerosol, and lubricant (of a petrochemical variety at least) 
> wouldn't be part of his vocabulary in the context of an iris diaphragm!

I thought somebody said I'd _disagree_ with him. So far I can see nothing 
to complain about.

Oil is bad new on diaphragm blades, it causes htem to stick. They should 
be dry -- the only lubricant I would consider using would be graphite, 
and tht shouldn't be necessary. If a diaphragm is sluggish, it's 
normally becuaseit has lubricant, not because it;s lacking lubricant.
>   In fact the last thing I recall him getting het up about re threads 
> was that he believes only special lubricants should be allowed near a 
> lens, and that what's suitably for a focussing screw wouldn't be the

I wouldn't go that far. I think the generic focusing grease avaiable 
from, say, MicroTools would be OK on most lens helical threads. Actualy, 
I've used normal high melting point grease there with no problems.


More information about the cctalk mailing list