> > In addition to 2 Aspherical glasses, an extra low dispersion glass
>Perhaps I shouldn't have used the terminology "glass" here. Instead, it
>should have been "lens", as in a stricter sense, we do not know if they are
>"glasses". I am almost certain that at least ALs are of hybrid type, as
>the
>aspherical surface is created in resin and "glued" to glass using special
>clear resin in the case of Pentax.
>
>Just for clarification. Correct me if I am wrong.
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.
regards,
Alan Chan
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