[OM] Re: 100mm f2.8, which is the good range?

[AG Schnozz]

I'll have to look back through my emails.  I don't have that kit
with me today, so I can't even tell you what the SN is.

The 100/2.8 underwent numerous changes.  The earliest ones are
quite sharp in the center but fall off quite rapidly towards the
corners. The last ones are sharp edge-to-edge, but not quite as
sharp in the center as the earlier versions.  The middle ranges
had incremental changes as well as additional coatings--but
still no green reflection.  The aperture blades changed design
at some point, with the earlier design offering a very unique
combination of excessive sharpness with a slight gaussian blur
to the image.

Personally, I don't think there's a dog in the bunch. I'd
probably stay away from the oldest ones because of colorcast and
flare.

AG



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