I always like the LEICA M System (and others), but for a lot of reasons I
like very much the OLYMPUS OM System.
On April 1998 one friend of mine wants to sell me a Leica M 2 plus a lens
Summicron 50 mm f 2.
During a week I have with me the M 2 and the Summ. with the intention of to
do a parallel test vs the OM 1n with the Zuiko 50 1.8 " MC " (not the
plastic "made in Japan"). I put on every camera a roll of Sensia II 100 ASA
and a new battery 625 on the OM1n, the camera that I use as light metter.
I shoot 37 slides on every camera over exactly the same objets and
conditions, almost 15 slides on a big park, ( trees, flowers, buildings,
fountains, etc, etc) and the next 15 slides on my system of test "real
time, real light" over a big building in front of my house,with the roof of
tiles, including walls with brown bricks, grey walls, balconys with awnings
on colours grey, green, blue, etc and with a perfect parallels white lines
on. All at 9.30 am with the spanish light of April and the sky totally
clean of clouds. The rest of the slides, inside my home : oranges,
platanos, apples, toys, a newspaper, etc,etc.
I look at the slides a lot of times, and I think that both groups are one
very near of the other and viceversa, But if I must choose one... I prefer
the Olympus team.
Ángel Lobo
CUENCA (Spain)
angel.lobo@xxxxxxxxxx
----------
> De: PCACala@xxxxxxx
> A: olympus@xxxxxxxxxxxxxxx
> Asunto: [OM] Summicron vs. Macro Zuiko vs. Canon FD
> Fecha: viernes 30 de julio de 1999 1:50
>
> Here are the results of a paired comparison between the Leitz 50mm f/2
> Summicron-M and the Olympus 50mm f/2 Macro Zuiko lens. I added a third
lens
> in the same class, the uncommon Canon FD 50mm f/2. Differences are
> significant at the 1/3rd grade level for the first two, and full grades
only
> between them and the Canon lens.
>
> Conclusions: the Summicron has better contrast throughout the aperture
range,
> but the Zuiko has better resolution at it's optimal apertures. The
Summicron
> is superior in image detail at the two widest apertures, esp. in the
corners.
> The Zuiko holds high SQF grades through more apertures than does the
> Summicron, making it less necessary to select a "sweet spot." Light
fall-off
> is marginally less pronounced in the Summicron.
>
> Under a high powered loupe, at f/8, the following rankings reflect image
> rendering ability:
> Center:
> 50mm f/1.8 MC Zuiko, then 50mm f/2 Macro Zuiko, then 50mm f/2 Summicron
which
> equals the 50mm f/3.5 Macro Zuiko
> Corner:
> 50mm f/2 Macro Zuiko, then 50mm f/1.8 MC Zuiko, then 50mm f/2 Summicron
which
> equals the 50mm f/3.5 Macro Zuiko
> Differences are quite minor and confounded by differences in exposure.
> *************
> Leitz 50mm f/2 Summicron-M (4th generation 1978 "Mandler" design,
> multi-coated)
> Leica M2 with self-timer
> Distortion: None
> Vignetting: B @ f/2, A- @ f/2.8, A @ f/4
> Aperture Center Corner
> f/2 B- B+
> f/2.8 B A-
> f/4 B+ A-
> f/5.6 A A+
> f/8 A- A-
> f/11 B+ B+
> f/16 B+ B+
> Note: Moderately high contrast at f/2.8 to f/5.6, and f/16; high contrast
at
> f/8 to f/11.
>
> Olympus 50mm f/2 Macro Zuiko (multi-coated)
> OM-2000 with mirror and aperture prefire
> (re-evaluated over results previously posted)
> Aperture Center Corner
> f/2 B- B-
> f/2.8 B- B
> f/4 A- A-
> f/5.6 A- A
> f/8 A+ A+
> f/11 A A-
> f/16 A- B+
> Note: Moderate contrast at f/2, f/2.8, f/4, f/5.6, f/16, moderately high
> contrast at f/8 to f/11. Paired comparison to the Leitz 50mm f/2
Summicron-M,
> with differences significant at the 1/3 grade level.
>
> Canon FD 50mm f/2 (new mount, S.C.)
> Vignetting = C @ f/2, A- @ f/2.8, A @ f/4
> Distortion = none
> Aperture Center Corner
> f/2 B- B-
> f/2.8 B+ B
> f/4 A- B+
> f/5.6 A- B+
> f/8 A- B
> f/11 B B
> f/16 B+ B-
> Note: moderate contrast, except moderately low at f/2 and f/16.
>
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