DIWA Labs has tested the Carl Zeiss Planar T* 85mm f/1.4 ZE lens on a Canon EOS 5D Mark II DSLR camera body. This manual focusing lens is equipped with an all-electronic Canon EF mount making you able to set aperture in the camera.
DIWA Labs found out that the lens produce excellent results at medium and small apertures, but wide open it is a bit soft especially in the corners of the picture. This is due to the fact that the lens was tested on a full frame camera body.

Read all the tests of the Carl Zeiss Planar T* 85mm f/1.4 ZE lens on a Canon EOS 5D Mark II camera here.
The tests done by DIWA Labs are very technical so you need to read their test guide to understand the test results.

DIWA Labs has tested the Carl Zeiss Planar T* 50mm f/1.4 ZE lens on a Canon EOS 5D Mark II camera. This manual focusing lens delivers excellent results at small and medium apertures, but is a bit soft wide open on a full frame camera especially in the corners.

Read all the tests of the Carl Zeiss Planar T* 50mm f/1.4 ZE lens on the Canon EOS 5D Mark II full frame DSLR body here.
The tests done by DIWA Labs are very technical so you need to read their test guide to understand the test results.

DIWA Labs has tested a mechanical lens from Carl Zeiss, the Carl Zeiss Distagon T* 35mm f/2 ZF. This lens is fully manual and it has some vignetting on a Full Frame camera at the biggest apertures. DIWA Labs used a Nikon D3 DSLR camera to perform all the tests of the lens.

Read all the tests of the Carl Zeiss Distagon T* 35mm f/2 ZF lens on the Nikon D3 camera body here.
The tests done by DIWA Labs are very technical so you need to read their test guide to understand the test results.

The reputable website DIWA Labs has tested the manual lens Carl Zeiss Distagon T 28mm f2 ZF on a Nikon D3 camera body. Carl Zeiss are known for having very good lenses and the Carl Zeiss Distagon T 28mm f2 ZF is no exception.
One downside is that you get some vignetting on a Full Frame camera body when you use the largest apertures.

Read all the tests of the Carl Zeiss Distagon T 28mm f2 ZF lens on a Nikon D3 DSLR camera here.
The tests done by DIWA Labs are very technical so you need to read their test guide to understand the test results.

DIWA Labs has tested Carl Zeiss Distagon T* 25mm f/2.8 ZF lens on a Nikon D3 camera body. This lens is completely manual so you have to manual exposure mode on the camera and use manual focusing.
Since the Carl Zeiss lens was tested on a Full Frame camera it did produce some vignetting at the largest apertures.

Read all the test of the Carl Zeiss Distagon T* 25mm f/2.8 ZF lens on the Nikon D3 camera here.
The tests done by DIWA Labs are very technical so you need to read their test guide to understand the test results.

DIWA Labs has tested the first full frame DSLR camera from Sony, the Sony Alpha 900. With its 24.6 megapixel sensor this should be a very interesting camera for everyone who is serious about their photography. DIWA Labs tested the Alpha 900 with two lenses; the Carl Zeiss Vario-Sonnar T* DT 24-70mm f/2.8 ZA and the Sony 20mm f/2.8 SAL20F28.

Some key features for the Sony Alpha 900 camera:
-24.6 megapixel full frame sensor
-In-camera image stabilization
-3″ LCD screen
-HDMI output with PhotoTV HD compatibility
-5fps continuous shooting

Read all the tests of the Sony Alpha 900 with Carl Zeiss Vario-Sonnar T* DT 24-70mm f/2.8 ZA and Sony 20mm f/2.8 SAL20F28 here.
The tests done by DIWA Labs are very technical so you need to read their test guide to understand the test results.

Carl Zeiss has announced that they are releasing a modern version of their high-end wide angle lens, the Carl Zeiss Distagon T* 2.8/21. It has a special type of coating that removes flares that often are a problem with super wide angle lenses.
The Carl Zeiss Distagon T* 2.8/21 lens will be released for Canon, Nikon and Pentax mounts at the end of 2008. The estimated price is a hefty 1,399 euros.

Press release:
Carl Zeiss Launches New 21mm Super Wide Angle Lens for SLR Cameras

OBERKOCHEN/Germany, 16.09.2008.
The legendary Distagon T* 2.8/21 is now being introduced for SLR cameras with EF, F and K bayonets. Thanks to its excellent performance, this modernized version from the former Contax system sets new standards in this focal length class. “The outstanding correction of chromatic aberration enables photos without color fringes even in high-contrast light conditions”, says Martin Klottig, Marketing Manager, Carl Zeiss Camera Lens Division. “Even at full aperture, the floating element design ensures optimum edge-to-edge image quality over the entire focusing range. And even in difficult light conditions, the new Distagon provides excellent results thanks to its T* coating, optimum reflection reduction and exceptional chromatic correction.”

The shortest possible distance setting of only 0.22 m makes the lens ideal for impressive perspectives. Typical applications include architectural, journalistic and landscape photography.

The Distagon 2.8/21 is available with an EF bayonet (ZE), F bayonet (ZF) and a K bayonet (ZK). It is suitable for both digital and analog full-format SLR cameras.

Delivery of the Distagon T* 2.8/21 is scheduled to begin by the end of this year with the ZF and ZK version. Its selling price is estimated at 1,399 euros (incl. 19% German VAT).

The excellent German website Photozone has reviewed the Zeiss ZA Sonnar T* 135mm f/1.8 (Sony SAL-135F18Z) lens. This telephoto lens seems very interesting with its fast f/1.8 aperture.

Photozone ends giving the Sony lens a “Highly Recommended” score as the lens is able to produce excellent pictures without any noticeable distortions, vignetting or chromatic aberrations. The only downsides are the high price (but what to you except from high quality optics) and lack of weather sealing.
Seems like an excellent telephoto lens if you are looking for a fast alternative.

Read the full review of the Zeiss ZA Sonnar T* 135mm f/1.8 (Sony SAL-135F18Z) lens here.

The German review site Photozone has tested Sony Carl Zeiss Vario-Sonnar ZA T* 24-70mm f/2.8 SSM (SAL-2470Z) lens. This Sony lens seems to be designed for the new fullformat DSLR, but it also works with the existing APS-C DSLRs. On APS-C DSLRs the 24-70mm f/2.8 lens will have a field-of-view equivalent of 36-105mm.

Photozone ends up giving the Sony Carl Zeiss Vario-Sonnar ZA T* 24-70mm f/2.8 SSM lens a very good review as the lens does not produce any vignetting or distortion (on APS-C DSLRs).
The only downsides for this lens is some poor bokeh at 70mm f/2.8 and some flare.
Overall it seems like an excellent lens from Sony.

Read the full test / review of the Sony Carl Zeiss Vario-Sonnar ZA T* 24-70mm f/2.8 SSM (SAL-2470Z) lens here.

PopPhoto.com has tested the Sony 24 -70mm f/2.8 Carl Zeiss Vario Sonnar T Zoom (SAL-2470Z) lens on a Sony A700 DSLR body. With a price of $1,750 this standard zoom lens got pro-quality Carl Zeiss T coated optics.

PopPhoto ends up giving the Sony lens a very good rating as it able to produce excellent pictures and very good build quality.
PopPhoto will redo the tests when Sony releases a full frame body to check for distortion and light falloff.

Read the full review of the Sony 24 -70mm f/2.8 lens here.