ALEXSCIFI@xxxxxxx schrieb:
> Richard.Schaetzl@xxxxxxxxxxxxxxxxxxxx writes:
> << ALEXSCIFI@xxxxxxx schrieb:
> > paying enough attention to bokeh, not having enough F2.0 lenses,
>
> They have F1.4 lenses instead.>>
>
> Yes, but those 35F1.4, 55F1.2, 85F1.2 and 85F1.4 lenses are much
> bigger than F2.0 lenses would need to be!
And F2.8 lenses would be even smaller!
> > not using
> > LD/ED glass in their telephotos,
>
> They use it, but they don´t clutter the lens with meaningless acronyms
> (do you realy believe Sigma has ever produced an apochromatic lens?).
>
> If you go to photodo.com and look at the test results of the latest
> Contax 645 140F2.0 and 210F4.0. And then look at the long
> lenses for the Conatx slr.
And Color Foto and fotoMagazin and Chaseur d´Image and Pop and... have
different tests.
I like to alter Churchils say, I don´t believe in lens tests I haven´t
forged.. aehhm wrote the specifications themself.
Anyway, Zeiss 100mm macro lens for Contax 35mm is known to be an
excelent lens. During presentation of this lens, Zeiss has declared, the
lens use no "exotic" type of glas even Zeiss could have used such glas
if they wanted (made by his daughter company Schott).
In my opinion, this reflects the idea that not the technical means are
important, but the results.
> > not having enough diaphragm blades
>
> Isn´t it meaningless to count blades, coating layers etc, what counts is
> the resulting image.
>
> Agreed, but I had one guy moan about the obvious hexagon
> highlights in pictures taken by his 50F1.4 Planar!
There are good and bad lenses at any manufactors assortment. Even if
lenses have the same focal lenght they might be optimized for different
purposes.
There is no "ideal" lens just "better" and "worse" compromise, depending
on your intentions.
That is no contradiction to the observation that some manufactors have
on the average an higher quality level (Zeiss) some an lower level
(Sigma). Zeiss and Sigma just have different optimising goals (Sigma
lenses should be cheaper than the one made by the camera makers).
Regards
Richard
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