ALEXSCIFI@xxxxxxx schrieb:
> Did COLOR FOTO ever test any of the other Olympus lenses? Thanks.
Yes
Message-ID: <350DBEC2.7D94@xxxxxxxxxxxxxxxxxxxx>
Date: Tue, 16 Mar 1998 21:08:28 +0100
From: Richard Schätzl <Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: [OM] Zuiko lens contrast
References: <01bd50e0$c4c84ec0$c70216ac@xxxxxxxxxxxxxxxxxx>
Ulf Westerberg wrote:
> Many commented that they had never ever seen so sharp, contrasty and colourful
> slides before. Eventually she became a little embarrassed about it all as
> questions about her equipment never seemed to stop, and it turned out she
> had swapped all of it for "something more modern".
>
> What had she used, then? OM-4, lenses 300/4.5, 180/2.8 and 90/2 on
> Kodachrome 64. (Don't know about filters).
Another fine example of good Olympus glass and now the numbers:
Lens test of macro lenses made by the German magazin Color Foto,
published in 1/88,2/88.
The graphs, of this test, are missing here for obvious reasons.
The quality numbers are basing on MTF measuring, the difference of one
whole number marks an, for the critical observer, just noticable
difference in
sharpnes, contrast. The maximum number is 10, which stands for a
flawless lens.
The number are computed and weigthed for the central half diameter to
2/3 and the rest to 1/3, the extrem corners are not rated.
Lens Sharpness Contrast Trans-
Vignet-
mission
ting
Center Corner Total Center Corner Total in %
in stops
Olympus Zuiko Auto-Macro 90mm 2,0
2,0 1:2 7,8 7,6 7,8 8,0 7,8
7,9
2,0 infinity 8,9 8,6 8,8 9,1 8,8 9,0 94
1,2
5,6 1:2 8,5 8,2 8,4 8,6 8,4 8,5
(0,5 at 2,8)
5,6 infinity 9,5 9,2 9,4 9,6 9,4 9,5
0
Zeiss Macro Planar 100mm 2,8
2,8 1:1 7,3 7,4 7,3 9,0 9,0
9,0
2,8 infinity 8,4 8,4 8,4 9,0 9,0 9,0 95,4
1,0
5,6 1:1 8,2 8,2 8,2 9,5 9,5
9,5
5,6 infinity 9,2 9,1 9,2 9,5 9,5 9,5
0
Leitz APO-Elmarit-R 100mm 2,8
2,8 1:2 8,0 7,9 8,0 8,4 8,0
8,3
2,8 infinity 8,6 8,6 8,6 9,0 9,2 9,1 95,8
0,6
5,6 1:2 8,5 8,5 8,5 8,9 8,8
8,9
5,6 infinity 10 ! 9,5 9,8 9,5 9,5 9,5
0
Nikon Micro Nikkor 105mm 2,8
2,8 1:2 6,8 6,3 6,6 7,1 6,6
6,9
2,8 infinity 7,8 7,2 7,6 8,1 7,6 7,9 90,3
0,9
5,6 1:2 7,9 7,4 7,7 8,2 7,9
8,1
5,6 infinity 8,8 8,4 8,6 9,1 8,8 9,0
0
Minolta AF-Macro 100mm 2,8
2,8 1:1 6,9 7,1 7,0 7,3 7,5
7,4
2,8 infinity 8,2 8,4 8,3 8,6 8,7 8,6 93,8
0,9
5,6 1:1 7,9 7,3 7,7 8,4 7,9
8,2
5,6 infinity 9,6 8,7 9,3 9,7 8,9 9,4
0
Tokina ATX Macro 90mm 2,5
2,5 1:2 7,8 6,7 7,4 8,0 6,8
7,6
2,5 infinity 8,7 7,7 8,3 8,9 7,8 8,5 90,3
0,8
5,6 1:2 8,7 8,6 8,7 8,5 8,4
8,5
5,6 infinity 9,6 9,6 9,6 9,4 9,4 9,4
0
Tamron Tele Macro 90mm 2,5
2,5 1:2 7,3 7,3 7,3 7,6 7,3
7,5
2,5 infinity 8,2 8,2 8,2 8,6 8,4 8,5 93,1
0,9
5,6 1:2 8,6 8,1 8,4 8,9 8,2
8,7
5,6 infinity 9,5 9,0 9,3 9,6 9,2 9,5
0,1
Vivitar Macro Telephoto 100mm 2,8
2,8 1:1 5,7 5,1 5,5 6,5 5,3 6,1
2,8 infinity 6,8 6,2 6,6 7,6 6,4 7,2 90,1
1,0
5,6 1:1 7,5 6,6 7,2 8,0 7,5 7,8
5,6 infinity 8,6 7,5 8,2 9,1 8,3 8,8
0,2
Remarkeble is the high performance of the fast Zuiko compared
with the slower Zeiss and Leitz lenses. Zeiss and Leitz have a
better contrast than the average lenses, it´s a pitty, that I
have no numbers for the Zuiko at 2,8 , I would expect an rise in
contrast for it. What too, distingish this group of three, from
the rest of the tested lenses is the high transmission of light
through the lens. The APO Leitz is a real APO lens (not "Sigma APO
everything"), that means, you don´t need focus correction for infrared.
This test shows, that the fame of Olympus macro lenses has reasons.
Richard
Message-ID: <35128D35.426C@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 20 Mar 1998 16:37:25 +0100
From: Richard Schätzl <Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx>
To: OLYMPUS Mailinglist <olympus@xxxxxxxxxxxxxxx>
Subject: [OM] 18mm Zuiko test and why you shoudn´t sell it
Ladys and gentlemen,
here are some reasons, why you shouldn´t sell your 18mm Zuiko,
congratulations to the buyer.
Based on a lens test by the Magazin Color Foto, published in 9/89,
11/89.
...and the winner is:
Lens Sharpness Contrast Distorsion
Vignetting
in stops
Center Corner Total Center Corner Total
Olympus Zuiko Auto-W 18mm 3,5
3,5 8.4 7,3 8,0 9,0 7,8 8,6 waveform,
2,6
5,6 8,5 7,6 8,2 9,3 8,1 8,9 slightly to
1,7
8,0 clear
1,3
Contax Zeiss Distagon T* 18mm 4,0
4,0 7,6 6,4 7,2 7,9 6,9 7,6 barrel,
2,3
5,6 8,7 6,8 8,1 9,0 7,6 8,5 slightly to
1,7
8,0 clear
1,4
Leica Elmarit-R 19mm 2,8
2,8 8,4 5,4 7,4 8,6 6,6 8,0 waveform,
2,6
5,6 9,2 6,4 8,3 9,3 7,6 8,7 slightly to
1,5
8,0 clear
1,2
Nikon Nikkor 18mm 3,5
3,5 8,0 6,9 7,6 8,5 7,4 8,1 waveform,
2,6
5,6 8,6 7,2 8,1 9,2 7,9 8,8 slightly to
1,6
8,0 clear
1,2
Canon FD 17mm 4,0
4,0 7,4 6,1 7,0 8,3 6,4 7,7 waveform,
2,3
5,6 8,1 6,6 7,6 8,9 7,6 8,5 slightly to
1,5
8,0 clear
1,2
... and now some realy bad performer.
Vivitar 17mm 3,5
3,5 6,7 3,1 5,5 6,2 3,6 5,4 waveform,
2,4
5,6 8,3 4,7 7,1 9,1 6,8 8,3 clear
1,5
8,0
1,3
Tokina SL 17mm 3,5
3,5 7,7 5,4 6,9 7,7 5,2 6,9 waveform,
2,3
5,6 9,0 6,7 8,2 9,3 7,9 8,8 slightly to
1,6
8,0 clear
1,4
If somebody complains, that the test is pretty old and new lens designs
migth be better, to whom I like to tell, that CoFo tested recently the
new
18mm 2.8 AF-Nikkor and it showed,that the old 18mm 3,5 Nikkor is
slightly
better. Neither Leitz(Leica) nor Zeiss have changed there lens design
since.
Remarkeble is the high performance of the Zuiko with wide open aperture,
stoping down has not much influence on sharpness and contrast.
Interesting is the difference in quality of the Tokina and Vivitar
lenses,
as far as I know, they are the same design. I owned the Vivitar lens and
found it a quite decent lens (this means either my standard for quality
is low :-( or i got a better lens they send to the test :-) or even
better the Zuiko is supernaturely good =8-O ).
The quality numbers are basing on MTF measuring, the difference of one
whole number marks an, for the critical observer, just noticable
difference in sharpnes, contrast. The maximum number is 10, which stands
for a
flawless lens. The number are computed and weigthed for the central half
diameter
to 2/3 and the rest to 1/3, the extrem corners are not rated.
Vignetting is the combined effect of light fall off and vignetting
through the lens barrel.
Waveform distortion is a combination of pincushion distorsion in the
corner and barrel distorsion in the center.
Richard
Message-ID: <3518EFDA.1B9C@xxxxxxxxxxxxxxxxxxxx>
Date: Wed, 25 Mar 1998 12:51:54 +0100
From: Richard Schätzl <Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx>
Subject: [OM] 21mm and 28mm Zuiko test
Hello Zuikoholics,
here are some more lens tests. Zuikos haven´t there outperformed
the rest :-( ,but keep a good place in the midle of the pack.
Remarkble is, that old Zuiko design are still on par with new
competing lens designs (I guess the 28mm AF Olympus lens has
the same design than the 28mm 2,8 Zuiko).
The 21mm Zuiko is still the fastest 21mm lens avaible! It has
to make some concesions to the wide aperture especialy at the
corners, you will notice, that the best lens here is the
slowest lens too.
Interessting is the comparision of non AF and AF lenses, some
new designs seems to have some problems with the quality (I will
show more examples with further test tables).
Based on a lens test by the Magazin Color Foto, published in
9/89, 11/89 (20-21mm) and 5/91 (28mm)
... diesmal nur zweiter Sieger
Lens Sharpnes Contrast Distorsion
Vignetting
in
stops in
Center Corner Total Center Corner Total
Olympus Zuiko Auto-W 21mm 2,0
2,0 7,6 5,3 6,8 8,1 4,9 7,0 waveform,
2,8
5,6 8,2 5,7 7,4 8,9 6,7 8,2 slightly to
1,5
8,0 clear
1,2
Leica Super Angulon-R 21mm 4,0
4,0 8,7 6,9 8,1 9,5 8,3 9,1 waveform,
1,9
5,6 8,8 7,5 8,4 9,5 8,9 9,3 slightly
1,2
8,0
1
Pentax-A 20mm 2,8
2,8 7,9 5,9 7,2 8,6 6,1 7,8 waveform,
2,5
5,6 8,4 6,8 7,9 9,1 8,0 8,7 clear
1,1
8,0
1
Nikon Nikkor 20mm 2,8
2,8 8,5 6,2 7,7 8,9 6,4 8,1 waveform,
2,1
5,6 8,8 7,8 8,5 9,2 9,4 9,3 clear
0,9
8,0
0,7
Nikon AF-Nikkor 20mm 2,8
2,8 7,5 4,5 6,5 7,9 3,8 6,5 waveform,
2,1
5,6 8,9 6,7 8,1 9,2 8,3 8,9 slightly to
1,0
8,0 clear
0,9
Canon FD 20mm 2,8
2,8 8,4 6,5 7,8 8,9 6,6 8,1 waveform,
2,4
5,6 8,7 7,9 8,4 9,3 9,1 9,2 clear
1,2
8,0
0,9
Soligor CD 20mm 2,8
2,8 6,9 4,5 6,1 8,0 4,8 6,9 waveform,
2,5
5,6 8,0 4,8 6,9 9,0 6,6 8,2 clear
1,4
8,0
1
...and now the 28mm lenses:
Lens Sharpnes Contrast Distorsion
Vignetting
in stops
Center Corner Total Center Corner Total
Olympus AF 28mm 2,8
2,8 8,8 6,5 8,0 9,0 7,2 8,4 waveform,
1,4
5,6 9,2 7,1 8,5 9,6 8,2 9,1 sligthly
0,6
Nikon AF-Nikkor 28mm 2,8
2,8 9,1 7,0 8,4 9,1 7,1 8,4 waveform,
1,3
5,6 9,6 7,8 9,0 9,6 8,5 9,2 sligthly
0,5
Minolta AF 28mm 2,8
2,8 9,1 6,9 8,4 9,1 7,2 8,5 waveform,
1,3
5,6 9,3 7,5 8,7 9,6 8,4 9,2 sligthly
0,6
Canon EF 28mm 2,8
2,8 8,5 6,0 7,7 9,1 6,9 8,4 waveform,
1,2
5,6 9,0 7,0 8,3 9,7 8,0 9,1 sligthly
0,5
Pentax F 28mm 2,8
2,8 8,4 6,0 7,6 8,9 7,1 8,3 waveform,
1,3
5,6 9,2 7,4 8,6 9,5 8,0 9,0 very sligthly
0,6
The quality numbers are basing on MTF measuring, the
difference of one whole number marks an, for the critical
observer, just noticable difference in sharpnes, contrast. The
maximum number is 10, which stands for a flawless lens.
The number are computed and weigthed for the central half
diameter to 2/3 and the rest to 1/3, the extrem corners are
not rated.
Vignetting is the combined effect of light fall off and
vignetting through the lens barrel.
Waveform distortion is a combination of pincushion distorsion
in the corner and barrel distorsion in the center.
Richard
P.S. actual tests of the 24mm 2,0, 28mm 2,0 and the 35mm 2,0 Zuiko
will follow soon, I´ve to find a new form of presentation, because
ColorFoto has changed there lens tests.
Message-ID: <3523961C.4618@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 02 Apr 1998 15:43:56 +0100
From: Richard Schätzl <Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx>
Subject: [OM] Lens comparison
Hello Zuikoholics,
some arguments why are Zuikos still compare favorable with actual AF
lenses.
Lee, if you don?t mind, you should change the FAQ.
>When introduced in the 1970s, the Zuiko lenses were
state-of-the-art. Today, they are still on a level
with competing Leica, Nikon, and Zeiss designs of
that era.<
I would add: Contemporary AF lenses show an loss of quality in make and
image
quality compared to there MF ancestors.
I?m sure Lee, you would formulate this more elegant.
And now to the lens comparison. Color Foto has changed the way they
publish
there lens tests with just a single number for each rubric.
Winsor, the problem is, that the graphs are still available which gave
are
better impression of how the lens performs at different apertures, but
it is a
little bit difficult to represent them in ASCII. Scanning them in and
putting
them an a webside, might violate there copyright, because that?s more
than
quoting.
Color Foto changed the way they test in 12/94, older tests are not
direct
comparable. I noticed a strange difference in the results for vignetting
between
the 96 and 97 tests, maybe they changed something but there was no
notice about
a change.
I decided to compare just lenses of the same max. aperture, because the
test
numbers are an compilation of results at max. aperture and at 5,6. So
it?s a
little bit unfair to show the results of 1,4 lenses, but some of them
show a
good performance.
The quality numbers for sharpness and contrast are basing on MTF
measuring. The
maximum number for sharpness, contrast is 30, for centering is 20 and
for
distortion, vignetting is 10, max. total is 100.
Based on lens tests by the Magazin Color Foto, published in 5/96, 11/97
and
12/97.
Lens Sharpness Contrast Centering Distortion Vignetting
Total Test in
Olympus Zuiko 17,8 22,7 17 7 6
70,5 11/97
2/24mm
Pentax-FA 18,1 21,7 14 6 6
65,8 11/97
2/24mm AL IF
Olympus Zuiko 18,9 23,1 18 8 9
77 5/96
2/28mm
Olympus Zuiko 18,2 23,3 19 8 6
74,5 11/97
2/28mm
Canon EF 17,2 20,9 15 7 6
66,1 11/97
1,8/28mm
Canon EF 18,3 22,8 16 8 9
74,1 5/96
1,8/28mm
Minolta AF 17,9 22,7 14 8 6
68,6 11/97
2/28mm
Minolta AF 19,1 23,4 16 9 9
76,5 5/96
2/28mm
Minolta MD- 18,4 23,2 20 9 6
76,6 11/97
Rokkor 2/28mm
Nikon AF- 18,6 23,1 17 8 8
74,7 5/96
Nikkor 1,4/28mm
Sigma AF 15,6 19,1 14 8 6
62,7 11/97
1,8/28mm Asph. II ZEN
Olympus Zuiko 18,6 24 14 9 10
75,6 5/96
2/35mm
Olympus Zuiko 18,5 23,6 15 9 7
73,1 12/97
2/35mm
Canon EF 18,8 23,3 14 9 8
73,1 12/97
2/35mm
Minolta AF 18,4 22,5 18 9 6
73,9 12/97
1,4/35mm G
Minolta AF 18,5 22,4 15 10 8
73,9 12/97
2/35mm
Nikon Nikkor 19 23,9 17 9 8
76,9 12/97
2/35mm
Nikon Nikkor 19,1 24,3 19 9 9
80,4 5/96
1,4/35mm
Nikon AF-D 18,9 23,1 14 9 7
72 12/97
Nikkor 2/35mm
Nikon AF- 18,6 24 14 9 10
75,6 5/96
Nikkor 2/35mm
Richard
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