According to an old Swedish test I have, the Zuiko 55mm/1.2 is more than
just "reasonably good".
At 30 lines/mm the MTF values are (as I can see from the lines shown):
F1.2 center 0,53, edge 0,28
F 2.8 center 0,75, edge 0,43
F 8 center 0,79, edge 0,77
A Canon SCC 55mm/1.2, tested at the same time has the same values (i.e.
around 0,8) for F8, but significanty lower values at 1.2 and 2.8:
1.2 center 0,42, edge 0,17
2.8 center 0,59, edge 0,30
Verdict for the the OM 55/1.2: Already fully open this lens gives good
center sharpness and is fully acceptable for portraits and photography at
low light levels. Stopping down to F2.8 already gives an extremely good
sharpness in center and fully acceptable edge sharpness. Stopping down to
F8 only improves edge performance, which together with center sharpness
here is absolutely top level.
(My translation)
The 50mm/1.2 is probably better, as it is a newer design and also
multicoated, but the 55 mm is a good lens in my opinion.
Lars
----------
> Fra: Frank van Lindert <Frank.van.Lindert@xxxxxxx>
> Til: olympus@xxxxxxxxxxxxxxx
> Cc: preynolds@xxxxxxxxxxxxxxxxx
> Emne: Re: [OM] 55mm F1.2
> Dato: 9. februar 2000 16:21
>
> Paul,
>
> This is the predecessor of the 50/1.2 standard lens.
> The lens is neither common nor rare.
> AFAIK the 55/1.2 came only single coated, because it was discontinued
> before multi-coating started.
> The lens quality is reasonably good, but I would always prefer the
> slower but multi coated 50mm lenses if quality is important and light
> conditions don't make use of the fast lens necessary. The 50/1.2 is
> definitely better, too.
> The price is low, in particular for a near mint boxed lens.
> Summary: Buy it.
>
> On Wed, 9 Feb 2000 13:41:37 -0000 , Reynolds Paul
> <PReynolds@xxxxxxxxxxxxxxxx> wrote:
>
> >I have just been looking at a 55mm f1.2 Zuiko, boxed, appears to be
> >virtually mint condition, priced at £91.00 - didn't notice whether it
was MC
> >or not.
> >
> >Any comments anybody? Is this a common lens?
> >
> >Paul Reynolds
> >E Mail Address: preynolds@xxxxxxxxxxxxxxxx
> >
>
>
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