On 26 Jan 2001, at 22:49, Alan Chan wrote:
> I think you are right. As I remember, Tamron and Pentax developed their AL
> technology together. They used resin instead of glass to lower the cost. Since
> resin cannot stand the heat of the coating process, quite possible AL elements
> are not SMC. This may also explain why the FA*24/2 is not that flare resistance.
> Just a guess.
I have no idea how the Pentax aspheric technology is implemented however
assuming that it does employ some polymer bonded lens I would also
assume that it would be coated as are many other polymer lenses, ie CD
laser optics and many quality polymer eye-glasses.
Cheers,
Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
Fax +61-2-9554-9259
UTC(GMT) +10 Hours
[EMAIL PROTECTED]
http://www.ozemail.com.au/~distudio/publications.html
-
This message is from the Pentax-Discuss Mail List. To unsubscribe,
go to http://www.pdml.net and follow the directions. Don't forget to
visit the Pentax Users' Gallery at http://pug.komkon.org.
