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Archive 2015Zeiss Unveils the Loxia 21mm f/2.8

  
 
davewolfs
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p.3 #1Zeiss Unveils the Loxia 21mm f/2.8
twoeye wrote:
Jochenb wroteExactly the lens I've been waiting for!
I am having a hard time deciding between this and the Batis 25, but focal length and compact size of the 2,8/21 is perfect, it is even lighter than I would have expected.


I've found 24mm often not wide enough or too wide.

Will be picking up the 21mm for sure.
Oct 12, 2015 at 09:05 AM
GMPhotography
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p.3 #2Zeiss Unveils the Loxia 21mm f/2.8
Looks to be a very nice lens. It's stuck between my 15 and 25 so not as useful for me. But glad to see they continue to expand the line. I do like the size of it.
Oct 12, 2015 at 09:25 AM
Stoffer
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p.3 #3Zeiss Unveils the Loxia 21mm f/2.8
GMPhotography wrote:
Looks to be a very nice lens. It's stuck between my 15 and 25 so not as useful for me.


No, no, Guy! I would say that it is placed perfectly between your 15 and 25. You want it, you just doesn't know it yet!
Oct 12, 2015 at 09:48 AM
GMPhotography
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p.3 #4Zeiss Unveils the Loxia 21mm f/2.8
Lol I know it does fit, I'm talking myself out of it. Lens whores have no control. I might even be the CEO of lens whores anonymous.
Oct 12, 2015 at 09:55 AM
nehemiahphoto
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p.3 #5Zeiss Unveils the Loxia 21mm f/2.8
I am stoked--21mm options are pretty limited in the a7 series with the sensor stack. I am hoping this will be like the Contax g 21 that won't play nice.

I think just by virtue of how crowded the field is with good 35s and 50s, the other two Loxias needed to be better than they are.
Oct 12, 2015 at 09:55 AM
wayne seltzer
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p.3 #6Zeiss Unveils the Loxia 21mm f/2.8
alundeb wrote:
No signs of weakness in the MTF's and the distortion is now barrel, not moustache.


I thought if the distortion curve goes from going negative to curving in a positive direction, that usually implies mustache distortion.
The 40 cycles/mm lines have a large zone B dip compared to the old Z* 21/2.8.
This one has an aspheric element that the old one didn't and the old one has a floating elements design. No mention if the new Loxia 21 has that. Really surprised by the small filter size, wondering how much vignetting it will have.
Oct 12, 2015 at 09:59 AM
john_edwards
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p.3 #7Zeiss Unveils the Loxia 21mm f/2.8
, lens whores have more social redeeming values than bag-a-holics. At least as far as photography goes. But I didn't know I was one till today
John, recovering bag-a-holic who just scored an OM 135 for $25.
Oct 12, 2015 at 10:10 AM
hiepphotog
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p.3 #8Zeiss Unveils the Loxia 21mm f/2.8
wayne seltzer wrote:
alundeb wroteNo signs of weakness in the MTF's and the distortion is now barrel, not moustache.
I thought if the distortion curve goes from going negative to curving in a positive direction, that usually implies mustache distortion.
The 40 cycles/mm lines have a large zone B dip compared to the old Z* 21/2.8.
This one has an aspheric element that the old one didn't and the old one has a floating elements design. No mention if the new Loxia 21 has that. Really surprised by the small filter size, wondering how much vignetting it will have.


Very minor mustache, less than even the SEM 21. Performance gradually declines so the dip is not as noticeable. Vignetting is much better than any rangefinder 21. Good point on the floating elements, they didn't say that in the brochure so I assume not.
Oct 12, 2015 at 10:11 AM
alundeb
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p.3 #9Zeiss Unveils the Loxia 21mm f/2.8
wayne seltzer wrote:
alundeb wroteNo signs of weakness in the MTF's and the distortion is now barrel, not moustache.
I thought if the distortion curve goes from going negative to curving in a positive direction, that usually implies mustache distortion.
The 40 cycles/mm lines have a large zone B dip compared to the old Z* 21/2.8.
This one has an aspheric element that the old one didn't and the old one has a floating elements design. No mention if the new Loxia 21 has that. Really surprised by the small filter size, wondering how much vignetting it will have.


The distortion curve has to rise significantly again for the distortion to be recognized as moustache. The curve for the Loxia 21 is almost identical to the ZF/ZE 25, and that is not referred to as especially moustache.

Regarding the zone B dip, I would hardly call it a weakness, it is just about 2% or so below the Otus 55 MTF at f/4.
Oct 12, 2015 at 10:14 AM
ken.vs.ryu
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p.3 #10Zeiss Unveils the Loxia 21mm f/2.8
Dear Santa.
Oct 12, 2015 at 10:54 AM
naturephoto1
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p.3 #11Zeiss Unveils the Loxia 21mm f/2.8
I expect to stay with my M WATE which offers more flexibility. I am waiting to hear more and handle the Leica SL once released hopefully at PhotoPlus on October 22 in NYC. It is possible that I would go that route instead of purchasing the A7rII. My A7r will become my second body to either the Leica SL or the A7rII. The WATE would make more sense to me to work on both camera systems (providing the M lenses will perform well on the SL).

Rich
Oct 12, 2015 at 11:02 AM
hiepphotog
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p.3 #12Zeiss Unveils the Loxia 21mm f/2.8
nehemiahphoto wrote:
I am stoked--21mm options are pretty limited in the a7 series with the sensor stack. I am hoping this will be like the Contax g 21 that won't play nice.

I think just by virtue of how crowded the field is with good 35s and 50s, the other two Loxias needed to be better than they are.


It looks sharper than my G21 at WO (just like the MTF suggested). But I think the G 21 is best known for its decent performance with almost zero distortion in a very small package. This one is better technically, except in distortion, being much heavier and bigger.
Oct 12, 2015 at 11:14 AM
itai195
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p.3 #13Zeiss Unveils the Loxia 21mm f/2.8
Looks like the lens I've been waiting for ever since Zeiss announced they're making lenses for the A7. I'm glad they managed to keep it compact.
Oct 12, 2015 at 11:17 AM
alundeb
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p.3 #14Zeiss Unveils the Loxia 21mm f/2.8
Lloyd Chambers was still gone fishing this morning but had this review prepared:

http://diglloyd.com/blog/2015/20151012_0950-ZeissLoxia21f2_8-reviewed.html
Oct 12, 2015 at 11:47 AM
theophilus
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p.3 #15Zeiss Unveils the Loxia 21mm f/2.8
Hard infinity stop? Sign me up.
Oct 12, 2015 at 11:53 AM
Cliff L.
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p.3 #16Zeiss Unveils the Loxia 21mm f/2.8
philip_pj wrote:
None of those five are made by Sony.


Thank goodness for that!
Oct 12, 2015 at 11:56 AM
Sam_W
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p.3 #17Zeiss Unveils the Loxia 21mm f/2.8
justruss wrote:
MTF looks really strong. For a compact, high IQ, 21mm on the A7(x) cameras... this will be the one to beat.

Now we just need Samyang to give us the 90-95% IQ for 30% of the price options.


And 30% of the build quality and quality control...
Oct 12, 2015 at 12:30 PM
sebboh
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p.3 #18Zeiss Unveils the Loxia 21mm f/2.8
sweet!

just in time to stop me from buying the contax g 21 too.

this is the first e-mount lens that actually looks attractive to me.

it looks like there is next to zero benefit to stopping down from the mtf, just dof and ridding oneself of vignetting. wonder how it does for coma shooting the night sky?

Oct 12, 2015 at 12:31 PM
Taylor Sherman
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p.3 #19Zeiss Unveils the Loxia 21mm f/2.8
Yeah, looks great. Nice job Zeiss!
Oct 12, 2015 at 12:43 PM
alundeb
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p.3 #20Zeiss Unveils the Loxia 21mm f/2.8
sebboh wrote:
it looks like there is next to zero benefit to stopping down from the mtf, just dof and ridding oneself of vignetting.



Surprisingly, the vignetting doesn't change much from f/2.8 to f/5.6 either, according to the datasheet. Fortunately, it is one stop better than the ZE/ZF Distagon 21 wide open at f/2.8 (40% vs 20%).
Oct 12, 2015 at 12:43 PM
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