Thank-you to *everyone* who offered suggestions, URLs, and other
information regarding how best to take pictures of the sky at night. It's
truly *amazing* the depth of knowledge we have in this group!
As I mentioned earlier, I think we'll go out 'bout midnight, tonight, and
see what transpires. We usually drive east of Edmonton (toward Elk
Island Provincial Park) to get away from the light pollution. 'Bout 15
miles away gets us far 'nuff that we can see stars, IF there isn't any
cloud cover, that is! Tonight's forecast (www.weather.ca) calls for
"variable cloudiness with a risk of a thundershower" so if we're lucky I
*might* even get a chance to use that lightning detector
(www.joinco.ca/chris/lightening_detector/index.html)! Now, wouldn't
THAT be a hoot?!?!? :-)
Regards,
Chris
On 12 Aug 2001, at 19:57, Hans van Veluwen wrote:
> : I guess it's another example of optical reconfiguration after a
> : multicoating change. In this case a change from MC Zuiko to Zuiko
> : multicoating. FWIW, the optical cross sections in the 30-ring SIF
> : versus the 3-ring SIF look identical.
>
>
> And the lens data in the .pdf that can be downloaded from the Oly US site
> (http://a384.g.akamai.net/7/384/1468/d0d9b3cb1c363b/www.olympusamerica.com/
> f iles/omlens.pdf) are also identical as those in the Lens Handbook or
> early SIF. But at least this .pdf show evidence on page 11 that the current
> 180/2.8 indeed is compatible with the 1.4xA.
>
> hnz
>
>
>
>
>
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-------------------------------------------------
Chris O'Neill (chris@xxxxxxxxx)
Joinco Enterprises Inc., Edmonton, AB Canada
Web: http://www.joinco.ca
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