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Re: [OM] Single or Multi?

Subject: Re: [OM] Single or Multi?
From: Simon Gotlieb <simong@xxxxxxxxxxxxxxx>
Date: Sun, 12 May 2002 19:47:21 +1200
Gee really? Coming from the absolute butt-end of the world, I'm just
pathetically grateful to have anything of quality.

If you really don't want that SC lens, now...


On 12/5/02 17:14, "Bryan Pilati" <bryan223@xxxxxxx> wrote:

> I have an F. lens, and I feel so...so garden variety, so cheap now.  :)
> 
> Bryan Pilati
> OM-2N
> Va-USA
> Disclaimer:  I'm always joking
> unless I should be serious.
> 
> ----- Original Message -----
> From: "dreammoose" <dreammoose@xxxxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Sent: Friday, May 10, 2002 11:28 PM
> Subject: Re: [OM] Single or Multi?
> 
> 
>> This is a more coherent and conmprehensive discussion of the
>> multicoating business
>> <http://olympus.dementia.org/eSIF/om-sif/lensgroup/lensterms.htm>
>> 
>> Don't confuse the yellowish reflections from some coatings, notably
>> early SC 50/1.4s & 1.8s, with the yellowish transmission through the
>> glass of some 55/1.2s and a supposedly a very few, very early 50/1.4s.
>> The presence or absence of certain colors of coating reflections is not
>> a reliable indicator of MC as the formulas varied by lens and varied
>> over time for some lenses. The only reliable indicator is for non-zoom,
>> non-macro, manual-focus lenses. For them, the presence of a letter and a
>> period/dot immediatly preceeding the word 'ZUIKO'  indicates SC and all
>> others, whether marked MC or not, are multi-coated. There is probably
>> some obscure case where this may not be true, but it is the most
>> reliable indicator.
>> 
>> Your F.ZUIKOs are garden variety early, single-coated, regular optical
>> glass lenses.
>> 
>> Moose
>> 
>> tom wagner wrote:
>> 
>>> 
>>> Single coated lens normally appear clear. Any indication of green in
>>> the lens indicates multi-coated. A yellowish lens has "rare earth
>>> glass" mostly on a letter preceding the word Zuiko, such as "G.
>>> Zuiko". The letter indicates the number of elements, which in this
>>> case is umm....seven? I think. If this confuses you go to:
>>> http://www.ametro.net/~farrar/zuiko.html
>> 
>> 
>> 
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>> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
>> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
>> 
> 
> < 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 >
> 
> 

-- 

?

Simon Gotlieb
Paparangi, Wellington 6004
New Zealand

email: simong@xxxxxxxxxxxxxxx


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