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std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
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 Posted: Wed Dec 01, 2010 4:09 pm Post subject: Contax G 2,8/28 Biogon on Sony NEX-3 |
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std wrote:
Very sharp lens, silky smooth background, no problem with flare at all.
I am impressed 
Samples from NEX-3 Raw - developed with Sony Image Data Converter.
Everything to default , sharpening turned off. Resized with Picasa to 1600
Click on the pix for proper resolution.
Enjoy 
@f4
100% crop @f4
@f2,8
100% crop @f2,8
@f5,6
@2,8
100% crop @f2,8
@f4
@f4
@f4
100% crop @f4
@f2,8
@f5,6
@f2,8
100% crop @f2,8
@f4
@f4
@f4
@f4
@f4
100% crop @f4
@f2,8
@f4
@f2,8
100% crop @f2,8
@f2,8
100% crop @f2,8
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poilu
Joined: 26 Aug 2007
Posts: 10471
Location: Greece
Expire: 2019-08-29
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| Posted: Wed Dec 01, 2010 4:48 pm Post subject: |
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poilu wrote:
impressive indeed, great results!
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kds315*
Joined: 12 Mar 2008
Posts: 16541
Location: Weinheim, Germany
Expire: 2021-03-09
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| Posted: Wed Dec 01, 2010 6:01 pm Post subject: |
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kds315* wrote:
Looks very good to me indeed.
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"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
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ELCAN UV f5.6/52mm
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Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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fatdeeman
Joined: 13 Jun 2009
Posts: 780
Location: UK
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| Posted: Sat Jan 15, 2011 12:50 pm Post subject: |
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fatdeeman wrote:
Looks great to me, I can't see any axial CA in the bokeh either, one of the more common problems I see with adapted lenses. Perhaps because it's a relatively modern design?
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DSLR: Canon EOS 60D, Samsung GX-1S (Pentax *ist DS2)
Mirrorless: Panasonic DMC-G1, Sony NEX-5N
Compact: Canon PowerShot G3
Lenses:
Wide: Tokina RMC 28mm F/2.8, Tamron Adaptall 2 28mm F/2.5, Sun Optical 28mm F/2.5, Super paragon 28mm F/2.8, Sigma filtermatic 24mm F/2.8, Fujinon 35mm F/2.8, Sun Optical 35mm F/2.8
Standard: Industar 50-2, Helios 44-2, Helios 44M, Helios 44M-3, Pentax-M 50mm F/1.4, Pentax-M 50mm F/1.7, Pentax-M 50mm F/2, Ricoh 50mm F/1.7, Chinon 50mm F/1.7
Tele: Pentacon 135mm F/2.8, Pentacon 200mm F/3.5, Optomax 200mm f/3.5, Sun Optical 135mm F/3.5, Soligor 350mm F/5.6
Zoom: Tokina 28-70mm f/3.5-4.5 SZ-X270 SD, Sigma Zoom Pi 35-200mm F4-5.6, Sun Optical 28-80mm F/3.5-4.5, Sunagor 80-205mm F/3.8, Tokina RMC 80-200mm F/4, Vivitar 70-150mm F/3.8, Tamron 95-205mm F/6.3, Tamron Adaptall 28-200mm F/3.8-5.6 LD Aspherical, Tokina RMC 70-210mm F/3.5
Mirror: Falcon (Samyang) 800mm F/8, MTO-11CA 1000mm F/10, Tamron Adaptall 2 500mm F/8
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LucisPictor
Joined: 26 Feb 2007
Posts: 17633
Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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| Posted: Sat Jan 15, 2011 1:43 pm Post subject: |
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LucisPictor wrote:
The G lenses were great on the Contax G series (ask Orio about it) and they are fantastic on the NEX!
WOW! I guess those are the lenses that I need to keep an eye open for... 
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fotomachi
Joined: 02 Feb 2008
Posts: 638
Location: Estados Unidos de las Esferas Ultraterrenales
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| Posted: Sun Jan 16, 2011 11:47 am Post subject: |
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fotomachi wrote:
| LucisPictor wrote: |
| WOW! I guess those are the lenses that I need to keep an eye open for... |
Me too I´m affraid 
Thank you very much for the images std
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dejiki
Joined: 02 Feb 2011
Posts: 2
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| Posted: Mon Feb 07, 2011 11:56 pm Post subject: |
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dejiki wrote:
Just got a couple of Contax G lens, here's a photo from the 28/2.8 Biogon.
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std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
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| Posted: Tue Feb 08, 2011 8:07 am Post subject: |
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std wrote:
| dejiki wrote: |
Just got a couple of Contax G lens, here's a photo from the 28/2.8 Biogon.
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Thank you.
It looks really good |
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dnhkng
Joined: 27 Oct 2009
Posts: 74
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| Posted: Sun Mar 13, 2011 5:58 pm Post subject: |
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dnhkng wrote:
The color shift on the left and right edges seems pretty extreme though. Is it possible to correct this easily? |
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std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
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| Posted: Sun Mar 13, 2011 6:14 pm Post subject: |
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std wrote:
Should be easy if you create a lens profile with CornerFix. I never did it myself.. too much time lost in post processing - you need to convert the raw files to DNG before you can process them with CornerFix.
I haven't figured out if this is caused by the adapter i use or this lens makes color shift on other cameras.
Anyway the color shift is only visible in some situations (like snow landscapes).
Those 2 are some of the worst I have.
PS
Found one more of the pink snow pictures
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dnhkng
Joined: 27 Oct 2009
Posts: 74
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| Posted: Mon Mar 14, 2011 2:21 pm Post subject: |
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dnhkng wrote:
I really noticed it in your pictures of the bus and service station. I have the 45/2 on the Nex, and I dont see any color shift at all. It out-resolves the 14mp sensor though |
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std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
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| Posted: Mon Mar 14, 2011 2:31 pm Post subject: |
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std wrote:
This is a problem only with the biogons i guess, and should be even worse on 2,8/21 Biogon.
I have 2/35 Planar and 2,8/90 Sonnar and they look just fine. The 45 mm Planar and 21 mm Biogon are on my wish list too  |
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dnhkng
Joined: 27 Oct 2009
Posts: 74
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| Posted: Tue Mar 15, 2011 11:01 am Post subject: |
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dnhkng wrote:
Do you know what the lens casing is made of? Is it titanium, or some other metal thats been painted? |
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std
Joined: 09 Feb 2010
Posts: 1827
Location: Bulgaria
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| Posted: Tue Mar 15, 2011 11:37 am Post subject: |
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std wrote:
I doubt it's real titanium.. but you never know.
I haven't found info on that anywhere and I don't have deep scratches on my lenses which can confirm if the titanium finish is just a paint |
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