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...

SNIPS
What happens
Let me know if you find such a lens, most lenses designed for good
bokeh are not intentionally designed for poor resolution to compensate
but are designed for both good bokeh and good resolution. Two
exceptions may be the soft focus lenses that Minolta had 100/2.8 Maxxum
and Canon had with their 135/2.8 Soft Focus EOS lens which may have
gone out of production. But these lenses had a "0" setting where there
was no soft focus effect where they were supposedly excellently sharp.
There also used to be a soft focus lens (I forget the off brand) that
used the equivalent of an uncorrected one or two element magnifying
glass as a lens. Lens babies have a similar principle (despite their
ability to be bent/twisted for weird 3D placement of the plane of focus
but I believe these lenses are all inthe 50mm range (with possibly some
add-on adapters for different focal length effects). I suppose one
could try holding a loupe or a magnifying glasss in front of a camera
to see if that would fit the bill of nice bokeh and lousy resolution
but most people don't go after low resolution, just taking the "bite"
off of high resolution and/or contrast when it comes to portraiture.
Vaseline on a filter in front of a lens might do the trick of really
cutting down on resolution if not affecting the bokeh too and of course
there's always the trick of not loading the camera with any film if you
want both perfect bokeh and no resolution ;-)
Power to the Bokeh! :-)


Thebokehking


Re: The Zeiss Myth...

"thebokehking" <thebokehking@yahoo.com> wrote
Calm down now, King Bokeh, take deep breaths, relax ... it's
only lens fuzz, it doesn't really matter.
And how does a Nikanontaxokkor compare with a Verito???
I think a brass standard my trump gold. All I have seen
is bokeh as a side effect of a lens' performance. What happens
when a lens is designed for bokeh and resolution be damned?
I would go find out for myself but all my LF lenses are Nikkor
SW's & M's and Apo-Sironars: hardly the stuff of bokeh if the
premise that lousy lenses make good bokeh has merit.
The king of bokeh is a pin-hole camera: unfortunately the
bokeh is sort of uniform across the field. But more bokeh
definitely equates to less resolution with a no-lens lens.
--
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...

Bokeh power!
Power to the bokeh!
Make bokeh not coleslaw!
Trust no bokeh over f/3.0
Zeiss is nice!
All You Need Is Zeiss... Zeiss Is All You Need
You go grrrrrrrrrrrrrl!
Living La Vida Bokeh


Thebokehking


Re: The Zeiss Myth...

LARGE SNIP
No, it isn't. A lenses bokeh is what it is, whether you qualify it by
numbers/diagrams of point source light distribution or MTF
curves/photographic image, etc. Whether you like it or dislike _is_ the
subjective part.
It cannot be quantified objectively. To say,
You are confusing good bokeh with bokeh. "Good bokeh" is a matter of
taste, bokeh attributes of any lens are a matter of fact not opinion.
It can.
then we could spot trends between different
Remeber the Leica ASPH vs. their classic (non-asph) lenses I mentioned
as example. Erwin Putts goes on and on about this and so do others so
it doesn't bare repeating here. A google search should bring it up.
As it stands now, we must look at how
And/or look at MTF diagrams or light distribution graphs from a point
source.
Maybe they are better than most other brands. I know my Zeiss (Contax
SLR) lenses have superior color saturation, tonal spread, micro
contrast (though Leica/Schneider lenses may do this attribute better)
and edge contrast. Most _good_ lenses have high resolution. Some have
good (or at least acceptable) bokeh. Zeiss's superiority, myth, reality
or otherwise does not begin and end on just one lens attribute.
They
Though its nice to have a high resolving lens (and I've seen actual
Ektar 25 large blow ups both from Zeiss (Kyocera) at their Javitz show
booth and at a "prestige" camera shop) many lenses (especially "normal"
lenses) can do high res. Zeiss is more than just high res.
They are. They are in roughly the same league for bokeh as the best of
many Leica lenses (especially the non asphs), Schneider, some Pentax
and Olympus lenses, etc. My Zeiss 28 and 16 (if focused closely/used
near wide open) does beautiful bokeh fore and aft, many if not most
lenses tend to excel either at foreground or background bokeh
smoothness, not both.
Once we sweep
If you want steak look at the results from the Zeiss Contax SLR, G
series lens ranges - its too early to tell if the ZF lenses are steak
or hamburger yet ;-).
Speaking of which, some of the Cosina rangefinder lenses I've seen are
quite excellent for bokeh but I couldn't speak of the whole range as
I've only seen a few image examples on the web (my favorites are the
40/1.4 and the 50/1.5 Nokton and the 35/2.5 Pancake? rangefinder lenses
as well as the 40/2 SL (SLR) Cosina lenses. Cosina can and does make
good lenses.
You can always upgrade to the non CZ Cosina lenses and count their
bokeh numbers ;-).
As for me, I prefer experience and appreciation of actual lens results,
not slim sampled number tests. Doesn't matter if youdrink fine Cognac
rated the best on various attributes (scientifically quantified and
otherwise) if you don't have the toungue or the sensibilities to
appreciate the results...
"Faith in numbers"... what an empty pursuit for its own sake.
Give me the steak, sell me the sizzle, but the wrappers with their
ingredient markings will never taste as good as the food itself.
Strawberry Bokeh aji forever!
Live free or die!
Don't tread on me... bokeh! :-)


Thebokehking


Re: The Zeiss Myth...

The number nines are one better than the number eights, LOL ;-)


Thebokehking


Re: The Zeiss Myth...

Yes, there is. Again, this time check Paul Furman's other links.


Thebokehking


Re: The Zeiss Myth...

SNIPS
This makes absolutely no sense at all. Good okeh and high resolution
are _not_ mutually exclusive. A classic example of a lens with high
resolution and good bokeh is the "gold standard" of protrait 35mm
lenses, the Nikon 105/2.5 in its various incarnations - I know, I've
owned it/used it. There are also other focal lengths/brands which team
good to excellent bokeh with high resolution - much of the Canon L
range (zooms and ffl), the Leica 28mm and 100 f/2.8 R macro Elmarit
lenses, the 28mm Zeiss Distagon for the Contax MM mount, etc.


Thebokehking


Re: The Zeiss Myth...

My camera goes to 11 (for Spinal Tap fans).
Scott


Scott W


Re: The Zeiss Myth...

We need to figure out a way to quantitatively measure bokeh, and give it a
unit name, like, "Bo's". Then we will be able to say that the best lenses
have 9 or 10 Bo's, and the poorest ones only have 2 or 3 Bo's of bokeh......


William Graham


Re: The Zeiss Myth...

If it can be quantified, why is no one measuring it and reporting it in lens
test reviews?


Jeremy


Content - The Zeiss Myth...
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