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原帖由 jakeyxxxjakey 于 2010-5-1 11:13 发表
谢谢楼上的朋友````因为我上网查过资料!!有人说1.4前期的头最好!中期和后期的是垃圾!
前期的头应该就是11开头的OM头最好(就是MC头.实际价格也会比其他的要贵几百)
我刚刚买了一个G.zuiko 是21开头的!!我想!!其实有 ...
回帖有些诚恐,俺不是高手,感觉没啥多讲究的
需要更正的是11开头的7位数是最后期,最前期的才是G.zuiko
垃圾也好,牛头也好,自己用的舒服才是最好的,其实所有的说法只是这个评测而起~~,虽然此评测在我用OM镜头感觉而言也挺准确,但没有必要认为是标准。
Written by Ken Norton | Nov 22, 2008 at 03:09 PM | (multi-coated)
50mm f/1.4 Zuiko (multi-coated)
OM-2000 with mirror and diaphram prefire; lens with <1,000,000
serial number
Vignetting = D @ f/1.4, B @ f/2, A- @ f/2.8, A @ f/4
Distortion = slight barrel
Aperture Center Corner
f/1.4 C C
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+ A-
f/16 B+ B+
Notes: Moderately high contrast, except moderately low at f/1.4,
moderate at f/1.4.
50mm f/1.4 Zuiko (multi-coated)
OM-2000 with mirror and diaphram prefire; lens with >1,100,000
serial number
Vignetting = D @ f/1.4, B @ f/2, A- @ f/2.8, A @ f/4
Distortion = none
No filter
Aperture Center Corner
f/1.4 B B
f/2 A- B
f/2.8 A A-
f/4 A A
f/5.6 A A-
f/8 A- A-
f/11 A- A-
f/16 B+ B+
Notes: High contrast, except moderate in center at f/1.4, moderately low in corners at f/1.4 and moderate in corners at f/16; remarkably even performance across all apertures.
With poorly made Vivitar VMC ND3 neutral density filter
Aperture Center Corner
f/1.4 C- C
f/2 C C
f/2.8 B B
f/4 B B+
f/5.6 A- A-
f/8 A- A-
f/11 A- A-
f/16 B+ B+
Notes: Differences are significant at the 1/3 grade level in this paired comparison evaluation. Contrast was slightly lower with the filter, but lower resolution was the most important factor in image deterioriation. Please note that this particular filter is not indicative of Vivitar or Vivitar VMC filters, in general. It just tested as a poor sample. Other filter makers, even the most highly regarded, have been found to have poor samples in selections taken from used and new stocks of filters.
The use of the term "poor" means star test images, viewed on
a vertical auto collimeter, which show images that are: multiple and
overlapping, fuzzy, off center, and images which rotate when the lens is rotated. More often than not, only one of these faults are found in an examined filter. These filters (including the test filter) often look perfectly good when examined without the aid of instrumentation!
50mm f/1.4 Zuiko (multi-coated)
OM-1 with mirror lockup; >1,000,000 serial number (different lens
than above tests)
Vignetting = B- @ f/1.4
Distortion = moderate barrel
Aperture Center Corner
f/1.4 B B-
f/2 A- B
f/2.8 A- A-
f/4 B+ A-
f/5.6 A+ A
f/8 A A-
f/11 A- A-
f/16 A- B+
Notes: Moderately high contrast with remarkably even performance across all apertures.
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