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Nikos
Joined: 17 May 2010
Posts: 1077
Location: Greece
Expire: 2015-01-02
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 Posted: Tue Feb 12, 2013 1:28 pm Post subject: Zeiss Biogon 4,5/21 ZM (21mm f4.5): Resolution test |
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Nikos wrote:
Of course, shooting resolution charts is only part of the story and perhaps not the most important.
And this is a snapshot.
However, I think that the results are impressive and indicative of this lens' sharpness.
Note that the target was backlit (the target is a good Kodak print, 50x75cm, from a 600dpi file).
Converted from RAW in Photoshop with standard settings.
I only changed the color (Photoshop -> Auto Color) in the 100% crops.
Wide open at f/4.5, focus at 0.8 meters.
Sony NEX 5N.
Full image (click for 16MP file)
Center crop
Bottom middle crop
(this is very tough for most lenses)
Top left crop
_________________
Νίκος • www.diafragma.gr
Cameras: Canon EOS 5D Mark II, Sony α7R, Sony NEX-5N
MF lenses:
SLR:
Canon TS-E 17mm f/4, Zeiss 2.8/21 ZE, Zeiss 2/28 Contax, Zeiss 2/35 ZE, Zeiss 1.4/50 Contax, Zeiss 1.4/85 Contax, Zeiss Makro 2/100 ZE,
Zeiss 2/135 Contax, Zeiss 2.8/135 Contax, Zeiss Vario-Sonnar 35-70 Contax, Zeiss Vario-Sonnar 100-300 Contax, Zeiss F-Distagon Rollei, Canon FD 24mm f2, Minolta MD Rokkor 35mm f2.8
Rangefinder:
Zeiss 4.5/21 C Biogon ZM, Zeiss 2/35 Biogon ZM, Voigtländer 15mm f/4.5 Heliar L39, Leica Tele-Elmarit 2.8/90mm, Zeiss 2/45 Contax G, Zeiss 2.8/90 Contax G, Canon 50mm 1.8 LTM
AF lenses: Canon 15mm f/2.8 Fisheye, Canon 24-70 f/2.8 L, Canon 70-200 f/2.8 L IS II, Canon 70-200 f/4 L, Canon 300 f/4 L IS, Canon 100 f/2.8 macro
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rbelyell
Joined: 13 Oct 2009
Posts: 4269
Location: somewhere in the mountains of central NY
Expire: 2014-01-31
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| Posted: Tue Feb 12, 2013 4:29 pm Post subject: |
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rbelyell wrote:
congrats on a new lens nikos. i would love to see some real world shots with this lens, as well as your impressions.
tony
_________________
Epson RD1 + Elmarit 21/2.8; Summarit 50/1.5; Summarit 75/2.5; Elmar-c 90/4; Sankyo Komura 135/2.8, Hektor 135/4.5; Braun Paxina 29 6x6; Photax Boyer Paris; Holga 120 Pano
GREAT STUFF FOR SALE:
Contax T
Hasselblad XPan + 45/4, 90/4
Kodak Retina Reflex IV + full set of Schneider Krueznach lenses
Mercury 2 half frame 35mm
Kodak Pro slr/n
Fuji GM670+100/3.5+65/8!
Praktisix 6x6 medium format + ZeissBiometar 120/2.8
Bessa T 101 Anniversary Edition in Navy Blue
Mamiya Six Folder with Zuiko 75/3.5
Adaptall: Tamron SP 28-85 macro
Cameras: Canon IX
PM for more complete descriptions/pix. All in great shape!
_________________________
'buy me a drink, sing me a song,
take me as i come 'cause i can't stay long' |
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Nikos
Joined: 17 May 2010
Posts: 1077
Location: Greece
Expire: 2015-01-02
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| Posted: Wed Feb 13, 2013 11:09 am Post subject: |
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Nikos wrote:
Thank you, but its not new.
I have posted some "real" photos about a year ago.
_________________
Νίκος • www.diafragma.gr
Cameras: Canon EOS 5D Mark II, Sony α7R, Sony NEX-5N
MF lenses:
SLR:
Canon TS-E 17mm f/4, Zeiss 2.8/21 ZE, Zeiss 2/28 Contax, Zeiss 2/35 ZE, Zeiss 1.4/50 Contax, Zeiss 1.4/85 Contax, Zeiss Makro 2/100 ZE,
Zeiss 2/135 Contax, Zeiss 2.8/135 Contax, Zeiss Vario-Sonnar 35-70 Contax, Zeiss Vario-Sonnar 100-300 Contax, Zeiss F-Distagon Rollei, Canon FD 24mm f2, Minolta MD Rokkor 35mm f2.8
Rangefinder:
Zeiss 4.5/21 C Biogon ZM, Zeiss 2/35 Biogon ZM, Voigtländer 15mm f/4.5 Heliar L39, Leica Tele-Elmarit 2.8/90mm, Zeiss 2/45 Contax G, Zeiss 2.8/90 Contax G, Canon 50mm 1.8 LTM
AF lenses: Canon 15mm f/2.8 Fisheye, Canon 24-70 f/2.8 L, Canon 70-200 f/2.8 L IS II, Canon 70-200 f/4 L, Canon 300 f/4 L IS, Canon 100 f/2.8 macro
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rbelyell
Joined: 13 Oct 2009
Posts: 4269
Location: somewhere in the mountains of central NY
Expire: 2014-01-31
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| Posted: Wed Feb 13, 2013 1:14 pm Post subject: |
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rbelyell wrote:
oh, i didnt recall. what are your impressions of the lens?
_________________
Epson RD1 + Elmarit 21/2.8; Summarit 50/1.5; Summarit 75/2.5; Elmar-c 90/4; Sankyo Komura 135/2.8, Hektor 135/4.5; Braun Paxina 29 6x6; Photax Boyer Paris; Holga 120 Pano
GREAT STUFF FOR SALE:
Contax T
Hasselblad XPan + 45/4, 90/4
Kodak Retina Reflex IV + full set of Schneider Krueznach lenses
Mercury 2 half frame 35mm
Kodak Pro slr/n
Fuji GM670+100/3.5+65/8!
Praktisix 6x6 medium format + ZeissBiometar 120/2.8
Bessa T 101 Anniversary Edition in Navy Blue
Mamiya Six Folder with Zuiko 75/3.5
Adaptall: Tamron SP 28-85 macro
Cameras: Canon IX
PM for more complete descriptions/pix. All in great shape!
_________________________
'buy me a drink, sing me a song,
take me as i come 'cause i can't stay long' |
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Nikos
Joined: 17 May 2010
Posts: 1077
Location: Greece
Expire: 2015-01-02
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| Posted: Wed Feb 13, 2013 1:22 pm Post subject: |
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Nikos wrote:
| rbelyell wrote: |
| oh, i didnt recall. what are your impressions of the lens? |
Crazy sharp and ultra-small: 190gr and 35mm length.
I stop down only to increase DOF.
I really like it has absolutely no geometric (barrel) distortion.
The only issue is perhaps a bit of vignetting, common to all Biogons.
But it is easy to correct with a computer, when it is apparent.
And of course, it is very sexy in silver chrome!
http://forum.mflenses.com/zeiss-c-biogon-4-5-21-zm-and-zeiss-biogon-2-35-zm-t47989,highlight,%2Bzm.html
A month after I got it, Zeiss increased its price by 50€, to 1050€.
They take advantage of the shortage in Leica lenses. |
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ForenSeil
Joined: 15 Apr 2011
Posts: 2726
Location: Kiel, Germany.
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| Posted: Wed Feb 13, 2013 5:44 pm Post subject: |
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ForenSeil wrote:
I guess the lens is not the limit in this resolution test ^^
_________________
I'm not a collector, I'm a tester 
My camera: Sony A7+Zeiss Sonnar 55/1.8
Current favourite lenses (I have many more):
A few macro-Tominons, Samyang 12/2.8, Noritsu 50.7/9.5, Rodagon 105/5.6 on bellows, Samyang 135/2, Nikon ED 180/2.8, Leitz Elmar-R 250/4, Celestron C8 2000mm F10
Most wanted: Samyang 24/1.4, Samyang 35/1.4, Nikon 200/2 ED
My Blog: http://picturechemistry.own-blog.com/
(German language) |
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OPAL
Joined: 11 Dec 2012
Posts: 354
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| Posted: Sat Feb 16, 2013 10:43 am Post subject: Re: Zeiss Biogon 4,5/21 ZM (21mm f4.5): Resolution test |
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OPAL wrote:
| Nikos wrote: |
Of course, shooting resolution charts is only part of the story and perhaps not the most important.
And this is a snapshot.
However, I think that the results are impressive and indicative of this lens' sharpness.
Note that the target was backlit (the target is a good Kodak print, 50x75cm, from a 600dpi file).
Converted from RAW in Photoshop with standard settings.
I only changed the color (Photoshop -> Auto Color) in the 100% crops.
Wide open at f/4.5, focus at 0.8 meters.
Sony NEX 5N.
Full image (click for 16MP file)
Center crop
Bottom middle crop
(this is very tough for most lenses)
Top left crop
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An excellent lens, but Zeiss is not recommending the glass to be used on the Leica M9! |
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Nikos
Joined: 17 May 2010
Posts: 1077
Location: Greece
Expire: 2015-01-02
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| Posted: Sat Feb 16, 2013 2:05 pm Post subject: Re: Zeiss Biogon 4,5/21 ZM (21mm f4.5): Resolution test |
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Nikos wrote:
| OPAL wrote: |
An excellent lens, but Zeiss is not recommending the glass to be used on the Leica M9! |
I guess this is not a problem of the lens.
I hope the new Leica M sensor will be much better.
Or perhaps I hope not, since it is probably too expensive for me
_________________
Νίκος • www.diafragma.gr
Cameras: Canon EOS 5D Mark II, Sony α7R, Sony NEX-5N
MF lenses:
SLR:
Canon TS-E 17mm f/4, Zeiss 2.8/21 ZE, Zeiss 2/28 Contax, Zeiss 2/35 ZE, Zeiss 1.4/50 Contax, Zeiss 1.4/85 Contax, Zeiss Makro 2/100 ZE,
Zeiss 2/135 Contax, Zeiss 2.8/135 Contax, Zeiss Vario-Sonnar 35-70 Contax, Zeiss Vario-Sonnar 100-300 Contax, Zeiss F-Distagon Rollei, Canon FD 24mm f2, Minolta MD Rokkor 35mm f2.8
Rangefinder:
Zeiss 4.5/21 C Biogon ZM, Zeiss 2/35 Biogon ZM, Voigtländer 15mm f/4.5 Heliar L39, Leica Tele-Elmarit 2.8/90mm, Zeiss 2/45 Contax G, Zeiss 2.8/90 Contax G, Canon 50mm 1.8 LTM
AF lenses: Canon 15mm f/2.8 Fisheye, Canon 24-70 f/2.8 L, Canon 70-200 f/2.8 L IS II, Canon 70-200 f/4 L, Canon 300 f/4 L IS, Canon 100 f/2.8 macro
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Orio
Joined: 24 Feb 2007
Posts: 29545
Location: West Emilia
Expire: 2012-12-04
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| Posted: Sat Feb 16, 2013 4:46 pm Post subject: Re: Zeiss Biogon 4,5/21 ZM (21mm f4.5): Resolution test |
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Orio wrote:
| OPAL wrote: |
| An excellent lens, but Zeiss is not recommending the glass to be used on the Leica M9! |
The slight colour shift that the digital sensors produce when using non retrofocal super wide angle lenses such as the 4.5/21 Biogon
can be easily addressed with the Capture One Pro software.
It is sufficient to shoot one photo of a 18% gray card target using the lens (or even better, one photo at every aperture step)
and the software will use it to colour-correct the photos produced with that lens.
And for people who don't want to spend the money for Capture One Pro, there's always the freeware option CornerFix:
http://sourceforge.net/projects/cornerfix/
_________________
Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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OPAL
Joined: 11 Dec 2012
Posts: 354
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| Posted: Sun Feb 17, 2013 8:35 am Post subject: Re: Zeiss Biogon 4,5/21 ZM (21mm f4.5): Resolution test |
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OPAL wrote:
| Orio wrote: |
| OPAL wrote: |
| An excellent lens, but Zeiss is not recommending the glass to be used on the Leica M9! |
The slight colour shift that the digital sensors produce when using non retrofocal super wide angle lenses such as the 4.5/21 Biogon
can be easily addressed with the Capture One Pro software.
It is sufficient to shoot one photo of a 18% gray card target using the lens (or even better, one photo at every aperture step)
and the software will use it to colour-correct the photos produced with that lens.
And for people who don't want to spend the money for Capture One Pro, there's always the freeware option CornerFix:
http://sourceforge.net/projects/cornerfix/ |
I am asking myself once in a while, why the lens manufacturers producing expensive and excellent and very complicated glasses, if the images can be corrected lateron just with some programs like CornerFix etc.?
Why not using just simple cheap window glass, if the images can be corrected lateron with an software! |
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Hari
Joined: 29 Nov 2009
Posts: 1790
Expire: 2015-05-27
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| Posted: Sun Feb 17, 2013 10:13 am Post subject: Re: Zeiss Biogon 4,5/21 ZM (21mm f4.5): Resolution test |
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Hari wrote:
| OPAL wrote: |
| Orio wrote: |
| OPAL wrote: |
| An excellent lens, but Zeiss is not recommending the glass to be used on the Leica M9! |
The slight colour shift that the digital sensors produce when using non retrofocal super wide angle lenses such as the 4.5/21 Biogon
can be easily addressed with the Capture One Pro software.
It is sufficient to shoot one photo of a 18% gray card target using the lens (or even better, one photo at every aperture step)
and the software will use it to colour-correct the photos produced with that lens.
And for people who don't want to spend the money for Capture One Pro, there's always the freeware option CornerFix:
http://sourceforge.net/projects/cornerfix/ |
I am asking myself once in a while, why the lens manufacturers producing expensive and excellent and very complicated glasses, if the images can be corrected lateron just with some programs like CornerFix etc.?
Why not using just simple cheap window glass, if the images can be corrected lateron with an software! |
_________________
Analogue Rangefinders: Leica M5, Leica M6 Titanium classic 0.72, Leica M7 0.58, Leica M7 0.85
Digital Rangefinder: Leica M9, Leica Monochrom, Leica M240
SLR: Leica R3 electronic, Canon AE1P
DSLR: Canon 5D MK2
M mount Lenses: Super-Wide Heliar 15/f4.5 ASPH. + Leica 24/f3.8 ASPH + Leica 28/f2 ASPH. + Leica 35/f1.4 ASPH. FLE + Leica Noctilux 50/f0.95 + Leica Noctilux 50/f1 + Canon 50/f1.2 LTM + Leica 50/f1.4 ASPH. + Leica 50/f1.5 + Zeiss ZM Sonnar 50/f1.5 + Leica APO Summicron 50/f2 + Leica Summitar 50/f2 + Leica Rigid Summicron 50/f2 + Zeiss ZM Planar 50/f2 + Leica 50/f2.8 E39 + Leica 75/f1.4 + Leica APO 75/f2 ASPH. + Voigtlander 75/f2.5 + Leica Summarex 85/f1.5 + Leica APO 90/f2 ASPH. + Leica 90/f2 E55 + Leica 90/f2.8 + Leica APO 135/f3.4
Leica R mount Lenses: Leica-R 60/2.8 E55 + Leica-R 80/1.4 E67 + Leica-R 180/4
EF mount Lenses: Canon 50/1.8 II
M42 mount Lenses: Too many
My pictures: http://www.flickr.com/photos/dementedjesus/ |
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Orio
Joined: 24 Feb 2007
Posts: 29545
Location: West Emilia
Expire: 2012-12-04
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| Posted: Sun Feb 17, 2013 10:23 am Post subject: Re: Zeiss Biogon 4,5/21 ZM (21mm f4.5): Resolution test |
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Orio wrote:
| OPAL wrote: |
I am asking myself once in a while, why the lens manufacturers producing expensive and excellent and very complicated glasses, if the images can be corrected lateron just with some programs like CornerFix etc.?
Why not using just simple cheap window glass, if the images can be corrected lateron with an software! |
The corners' colour shift problem is not a problem of the lenses, it's a problem of the digital sensors.
The Biogon lenses work perfectly with film (which is what they were designed for).
The software is there to correct the sensors, not the lenses. So blame it on the sensors.
_________________
Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
Support the Ornano film chemicals company and help them survive!
http://forum.mflenses.com/ornano-chemical-products-t55525.html |
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