At 1:29 PM -0800 1/19/01, Winsor Crosby wrote:
This concern with VRs presumes that somehow the circuit components
will not change value with age and use. That just is not true.
Well designed circuits with properly rated components of very high quality
will stay the same for extremely long periods of use. Pots (VR's) get
dirty, corrode, and take up more space than a fixed resistor of equal
wattage. It is common during an adjustment of a circuit with VR's to have
to clean them. For circuits where predicting the appropriate value of the
resistor is impossible and/or where size doesn't matter, then VR's are a
quick and easy solution...
Be seeing you.
Dirk Wright
For many years I accepted the vaunted superior electronic reliability
that became the mantra of all the popular photo magazines. However,
you just have to read the responses on this list to know that most of
us prefer the ability to fall back on the reliability of an OM1 or
OM3. The vaunted reliability of circuits is belied by anecdotes
concerning failure in cold, humidity, wet, physical failure of
earlier rigid circuit boards, battery eating behavior of some OM2S,
OM3, and OM4 models and LCD failure. It seems that super electronic
reliability is always here with the latest development with only
optimism to underwrite it and somehow the argument that it is the
pots that cause all the problems smacks of this. In the meantime
mechanical cameras just keep on clicking. Sorry for the skepticism.
(Love to use my OM4T, but do I trust it? Hmm.)
Winsor
--
Winsor Crosby
Long Beach, California, USA
mailto:wincros@xxxxxxxxxxx
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|