The second 50 (which is called Type 2, ) is 6 elements in 5 groups
(according to my diagram. Type 3 & 4 are both unclear because the filter
ring is part of this big front group which includes the front element. It
might be 3 elements is 2 groups. This makes the type 3 & 4 50s 6
elements in 4 groups (maybe).
Type 5, current production, is the same. Sorry I had to mention how many
types of 50 1.8s there are.
John
Angel Lobo Caballero wrote:
> Hi all .
>
> I have tree lenses Zuiko 50 mm f 1.8 :
>
> 1º.- The old 50 " F.Zuiko".
> 2º.- The mid time " MC "
> 3º.- The last " made in Japan "
>
> As we all know the first one is single coated and the last two
> multi coated. As we know, too, the " F. Zuiko " is 6 els / 5 grps and
> the last " made in Japan " is 6 els / 4 grps. I don´t know the groups
> of the " MC ".
> =================
> ========
> I don´t know if the 50 1.8 "MC" is a new F. Zuiko multi coated
> or an old (and well made) "made in Japan".
>
> I think the 50mm f 1.8 engraved " MC " in the best lens of 50mm
> made by Olympus (all 50 1.4 and 1.2 including), in general perfor
> mance (flare, definition, contrast, etc.) Macro not incl.
>
> Thanks.
>
> Ángel Lobo
> CUENCA (Spain)
>
>
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