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Carl Zeiss Jena Pancolar 50mm 1.8!
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PostPosted: Sun Sep 28, 2008 2:08 pm    Post subject: Reply with quote

My 5D has no mirror issue with Pancolar 50/1.8 and Flektogon 35/2.4 at infinity focusing, YMMV.

Pancolar 80/1.8 hits the mirror when it returns to the resting position, so not too bad but annoying. Sad
Flektogon 25/4 does not work with my 5D well, yes closer to infinity position, Sonnar 135/3.5 does
not have any mirror problem of course.

By the way, CZ Ultron 50/1.8 (with concave front element) and Rikenon 50/1.4 do not have
the mirror problem.

It seems that every EOS_5D has a slightly different length of mirror or manufacturing deviation,
so no one can say definitely your Pancolar wont hit your 5D's mirror. (Actually the mirror hits the lens. Very Happy)

That's all I know.


PostPosted: Sun Sep 28, 2008 2:15 pm    Post subject: Reply with quote

[quote="koji"]...Flektogon 25/4 does not work with my 5D well, yes closer to infinity position, .....[/quote]

Hi Koji!

If your CZJ 25 mm not work well with the 5D, I think that the 20/4 CZJ

work bad too. Is it right?


Regards, Rino.


PostPosted: Sun Sep 28, 2008 2:58 pm    Post subject: Reply with quote

Hi Rino.

I do not have CZJ 20/4, but Flektogon 20/2.8 works well with 5D.
CZJ 25/4 causes a trouble for 5D's mirror not going up at closer to
infinity position, so I cannot shoot in this case.

I will shave the mirror within a couple of months, since I now have
Prakticar to EF mount adapter (see "accessary" section). The most of
Prakticars will hit the mirror if I do not takeout plastic rear lens protector,
though I do not like to take them out.


PostPosted: Sat Apr 18, 2009 12:41 pm    Post subject: Reply with quote

Orio wrote:
The Pancolar sharpness is legendary and I agree that it is sharper than both the 50 Planars in the Contax line.


Are you sure? Nearly all len tests said that Planar 50/1.7 is sharper from wide open to f/8. Confused

Pancolar 50/1.8



Planar 50/1.7



PostPosted: Sat Apr 18, 2009 1:11 pm    Post subject: Reply with quote

WallyJr74 wrote:
Orio wrote:
The Pancolar sharpness is legendary and I agree that it is sharper than both the 50 Planars in the Contax line.


Are you sure? Nearly all len tests said that Planar 50/1.7 is sharper from wide open to f/8. Confused

Pancolar 50/1.8



Planar 50/1.7



All the tests are relative. See (specially the last one )

http://foto.recenzja.pl/Subjects-index-req-viewpage-pageid-21.html

http://www.pixophrenia.com/Pages/results-fast.htm

http://www.lupomesky.cz/czj_vs_cz/comp50.html


Rino.


PostPosted: Sat Apr 18, 2009 1:27 pm    Post subject: Reply with quote

Pancolar has variable MC layers. I don't know why CZJ changed it so frequently. I had many times 2-3 Pancolar copies at once in my hands and even if the reflections of the front side of the lens were similar, rear part reflected different colours. I never found two identical combinations Smile

I think threre is a plenty of combinations - if you are lucky, you can find a piece which fits you DSRL, but you can also find a lens, which performs mediocre.

I think it depend mainly on the combination of the color reflected by the rear lens elements and color of MC layers on the DSLR sensor. If these colors are same or close, sensor reflections can appear. If the colors are different, or opposite, all reflections will be absorbed and IQ will be better.


PostPosted: Sat Apr 18, 2009 1:53 pm    Post subject: Reply with quote

no-X wrote:
Pancolar has variable MC layers. I don't know why CZJ changed it so frequently. I had many times 2-3 Pancolar copies at once in my hands and even if the reflections of the front side of the lens were similar, rear part reflected different colours. I never found two identical combinations Smile


Very interesant question.

I noted the same. Perhaps is the CZJ lens that more MC layers changes have.

Be care, the reflections of the front element would have to be the same color than the rear one. If not, the danger that exists that lens has been rearmed with elements of different lenses (that had different MC layers).

I don't know more than that.


PostPosted: Sat Apr 18, 2009 1:55 pm    Post subject: Reply with quote

Rino - Thanks for the links. Very Happy

no-X wrote:
I think it depend mainly on the combination of the color reflected by the rear lens elements and color of MC layers on the DSLR sensor. If these colors are same or close, sensor reflections can appear. If the colors are different, or opposite, all reflections will be absorbed and IQ will be better.


Interesting...I never knew about that.


PostPosted: Sat Apr 18, 2009 4:21 pm    Post subject: Reply with quote

Where can I find such tables of sharpness, mentioned at the second page?


PostPosted: Sat Apr 18, 2009 4:29 pm    Post subject: Reply with quote

horvlas wrote:
Where can I find such tables of sharpness, mentioned at the second page?


slrlensreview.com