The Zeiss Myth...

I got this off of a side link from one Jeremy posted in the "Speaking
of Bokeh" thread. Hilights (blur circles may not be any thing or the
only thing to consider in bokeh (Zeiss lenses still have wonderfully
soft bokeh both sides of the focus plane) but if one were looking at
just hilight blur circles themeselves, both Nikon and the Cosina made
Zeiss may be something to steer clear of -- Pentax or Contax (Zeiss) or
Leica lenses instead anybody? :-)
http://www.kenrockwell.com/nikon/50-comparison/bokeh.htm
Of particular interest are the bottom paragraphs of Ken Rockwell's web
page that explain the Zeiss myth (as compared to the Nikon) and that
their hilight bokeh(s) are jokeh(s) and that their gaussian blurs are
currs (my phraseology) ;-) :-)
Too bad he didn't compare the 43mm Pentax Limited, the 40mm f/2?
Voigtlander SL lens (I know, not the same focal lengths as the rest of
the 50mm test lenses) and the Pentax 50/1.4 and 1.7 lenses against
those Nikon/Zeiss lenses but the test is already large and well done/a
service to people who care about bokeh (not to mention sharpness,
chromatic aberration and all the other factors he tested). Thanks Ken
for the test(s) (and Jeremy for the link).
Happy reading/viewing...

Thebokehking

Re: The Zeiss Myth...

scroll down for photo...
http://photo.net/bboard/q-and-a-fetch-msg?msg_id=0058sG&tag=
"My $15 Lentar 135mm f/3.5 preset T-mount can kick your Nikkor's ass.
Yes, this is a troll."
"I was only partly jesting, Alex. That old Lentar preset is a damned
fine lens with performance that rivals anything I've owned for
resolution, bokeh and flattering perspective for portraiture."
--
Paul Furman
http://www.edgehill.net/1
Bay Natives
http://www.baynatives.com


Paul Furman

Re: The Zeiss Myth...

What the heck is that? pre-set aperture AND focus? You dismantled the
focusing part off it for another lens?
Good point there... maybe I should be looking for really bad 3rd party
lenses for cool bokeh effects. Specifically I've seen mention of
overcorrected (spherical abberation?) causing the donut blur circles. I
could have fun with something fast and wide, sharp only in the center
with soft bokeh... it would be nice to at least have some decent
sharpness somewhere <grin> but often I could care less about the corners.
<http://search.ebay.com/search/search.dll?sofocus=bs&sbrftog=1&from=R10&catref=C6&satitle=%22f-mount%22+-adapter+-adaptor+-reversing+-reverse&sacat=-1%26catref%3DC6&sargn=-1%26saslc%3D2&sadis=200&fpos=ZIP%2FPostal&ftrt=1&ftrv=1&saprclo=&saprchi=&fsop=1%26fsoo%3D1&coaction=compare&copagenum=1&coentrypage=search>
--
Paul Furman
http://www.edgehill.net/1
Bay Natives
http://www.baynatives.com


Paul Furman

Re: The Zeiss Myth...

"Paul Furman" <paul-@-edgehill.net> wrote
Oh, I don't know. I have a pre-set Lentar I bought because I
needed a focusing helical. Maybe I should do some bokeh tests
before I bash the glass out of it with a star drill -
it does have a nice circular aperture.
It seems, and seems logical, that the lower the lens
resolution the better the bokeh.
And yes, the Lentar looks _just like_ the Zeissina.
--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
http://www.nolindan.com/da/index.htm
n o lindan at ix dot netcom dot com


Nicholas O. Lindan

Re: The Zeiss Myth...

Rockwell was comparing the NEW Zeiss ZF lenses to the OLD Nikkors. The only
reason I mentioned his tests was because they were the ONLY ones I could
find, that showed actual photos, rather than just a lot of "LPM" or other
empirical measurements.
Why not show us some examples of what you view as bad bokeh in Nikkor
lenses?


Jeremy

Re: The Zeiss Myth...

Unfortunately nothing else will mount on a Nikon. To my eyes those were
almost indistinguishable other than the polygonal shapes stopped down
and the size of the circles. Odd that the size is different, that
suggests either a different actual focal length or perhaps different
closest focus distance or the aperture is not as stated.
I'd like to see similar tests at the 24mm to 35mm range where things
might be quite different and there are some interesting Sigmas to toss
into the mix.
--
Paul Furman
http://www.edgehill.net/1
Bay Natives
http://www.baynatives.com


Paul Furman

Re: The Zeiss Myth...

Yes, he should have done more than compare the one Zeiss to a bunch of
Nikons. I've been shooting Nikon for years, and the bokeh sucks,
almost across the board, zeiss results notwithstanding. I just
purchased my first pentax lens, a 50mm 1.7m, and hope to aquire a
camera for it today (a Pentax KX). I will be sure to report my
findings.


Niceparking@gmail.com

Content - The Zeiss Myth...
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