Comment on Zeiss touit12mmf2.8.

IT 168 evaluation 2065438+April 30, 2003 Carl? Zeiss officially released a brand-new Touit lens series product line, aiming at the micro-single market with APS-C format. The first batch consists of two lenses, one is super wide-angle fixed focus Touit 12mm F2.8, and the other is standard portrait lens Touit 32mm 1.8. As one of the representatives of lens Gao Fushuai, Karl? Zeiss finally ended the embarrassing history that the original genuine Zeiss lens can only be played by switching since the birth of the big-bottomed mirrorless camera, and also added autofocus, which is the conscience of the industry. Although AF is not worth mentioning for the current lens technology, it is a huge leap for photographers who know German lenses.

Touit lenses are divided into Sony micro-single e-mount and Fuji x-mount. The difference is that the Fuji X bayonet lens has an aperture ring in addition to the focus ring, while the Sony micro-single E bayonet only has a focus ring. There is little difference. This improvement is only to maintain an operating habit of Fuji users.

▲ Carl? Zeiss touit12mm F2.8

After a short trial in Bian Xiao, I feel that this Touit 12mm F2.8 lens is almost impeccable in imaging and workmanship. Although the imaging is slightly softer at the maximum aperture, the best imaging quality can be obtained almost immediately after reducing an aperture. The imaging is also very transparent, the colors are rich and pleasing to the eye, and the cool colors are excellent. The lens distortion is the best of its kind, and the barrel distortion of 12mm is very light.

However, the shortcomings of this lens are also obvious. First, the focus is not satisfactory, the mechanical motor rotates obviously, and the bellows are occasionally pulled when the light is good. Secondly, as a traditional manual lens manufacturer, Zeiss has no focal length scale on the new Touit lens, so it is impossible to estimate the focal length when using the manual function. In extreme cases, it is not necessary to take a quick snapshot manually.

Advantages:

1. The working quality of metal materials is reliable.

2. Excellent picture quality, good clarity and contrast, and rich colors.

3. Distortion control is excellent, and barrel distortion is very small.

Disadvantages:

1. Focus a little slower and pull the bellows occasionally.

2. The lens has no focal length scale.

At present, this lens has been officially put on sale in Chinese mainland, and the price is about 8400 yuan. It can only be purchased through physical stores, and e-commerce has no sales for the time being. Regarding the quality of the shot or the trial experience, you can continue to look down, and Bian Xiao will give you a more detailed explanation.

Appearance and parameters

At present, there are very few ultra-wide-angle and large-aperture fixed-focus lenses in the field of large-soled mirrorless cameras, which means that this Touit 12mm lens will be favored by more photographers or enthusiasts. Because it is the first time that Zeiss has launched a lens series specifically for large-soled mirrorless cameras, the Touit series is at least particularly optimized compared with the lens series that needed to be transferred to the original Zeiss factory.

▲ Carl? Zeiss touit12mm F2.8

As a super wide-angle large aperture fixed-focus lens, its volume is naturally not too small, and the front aperture reaches 67 mm Although the front lens is an obvious curved mirror, it can still be loaded with various filters, which is good news for children's shoes who like scenery shooting. The front end of the lens is marked with distinctive T* coating and Distagon structure logo, which is also an important symbol of Zeiss' identity.

▲ T coating

And T* coating is well known as history? Three famous movies? First, it is excellent in controlling glare ghost and maximizing light transmittance, and the coating color is also beautiful.

▲ lens front end

The lens structure consists of 8 groups of 1 1 lenses, including 2 aspheric lenses and 3 low dispersion lenses, with floating lens design. The lens design adopts Distagon structure, and Zeiss wide-angle lens is widely used. Its advantage is that it can greatly control the edge deformation and maintain the extremely high resolution of the lens center. There will be a small comparative sample later.

▲ lens side

Touit 12mm F2.8 E bayonet size is 65mm? 8 1mm(X-mount is 86mm), its volume is not small compared with other micro-single lenses, and its weight is 260g (X-mount is 270g), which fully illustrates the metal workmanship inside the lens and the materials used in the internal lens, and it is full of weight in hand. The focus ring is made of soft rubber, which is rare in the current new lens. In addition, there is no focal length scale on the mirror body, which may be a little inconvenient for children's shoes like blind shot to take a quick snapshot in the street. However, since AF can be used, it is not as important to do it manually as before.

▲ Japan of origin

At the end of the lens, it is indicated that the origin of the lens is in Japan rather than Germany, but the whole assembly process of the lens is still manual. Although the production capacity is limited, the rigorous attitude and scientific and standardized production technology are the reasons why Zeiss lens quality has been leading the industry for so many years.

▲ What it looks like after installing a range hood.

▲ Sony NEX-3N with close-up.

The lens comes with a lotus hood, which is powerful and domineering, slightly larger than the whole fuselage. However, super wide-angle and large aperture fixed-focus lenses are all like this. Because of the relationship between the viewing angle and the aperture size, the volume cannot be truly biscuit-shaped. Because Touit lenses are generally faced with relatively professional photographers, most people will carry professional camera bags to protect them when traveling.

Real shot image quality comparison

Bian Xiao took a comparative photo of the same outdoor scene, intercepted the center and edge of the picture under each aperture, and conducted a comparative resolution test.

▲ lens real shot comparison

By comparison, we can clearly see that Touit 12mm lens is slightly soft and not sharp enough when the aperture is fully opened, but it can get very good sharpness immediately after the aperture is reduced by one step, and the center and edge can maintain relatively good image quality in the range of F4 to F 1 1, and the image quality tends to be caused by aperture diffraction after F1.

"Real sample appreciation.

With regard to the picture quality, Bian Xiao took out Touit 12mm F2.8 lens to sweep the street and experienced it. The shock of 12mm super wide-angle lens is obvious. Of course, because the viewing angle is too wide, it is relatively difficult to control the composition (click on the picture to see a larger image).

First look at the performance of indoor shooting. There are many linear objects in the room. It can be seen that the barrel distortion has been well controlled except for the perspective distortion that all wide-angle lenses can't avoid. Having said that, Bian Xiao thoughtfully thought of former Zeiss legend HOLOGEN.

▲ Aperture F2.8 Shutter speed 1/52 seconds ISO 400 exposure compensation 0

▲ Aperture F2.8 Shutter speed 1/52 seconds ISO 800 exposure compensation 0

▲ aperture F2.8 shutter speed1110 second ISO 400 exposure compensation 0

▲ Aperture F2.8 Shutter speed 1/25 seconds ISO 800 exposure compensation 0

Touit 12mm F2.8 can also have obvious background blur effect when the aperture is fully opened during close-up.

▲ Aperture F2.8 Shutter speed 1/27 seconds ISO 800 exposure compensation 0

▲ Aperture F2.8 Shutter speed 1/42 seconds ISO 800 exposure compensation 0

In the case of dim light, the advantages of Touit 12mm F2.8 handheld are highlighted. First, the large aperture of F2.8 can keep the camera at a high shutter speed. Secondly, due to the short focal length, the equivalent focal length of APS-C CMOS is 18mm, so the safety shutter value is relatively low, except for Parkinson's patients, which is generally not slower than the shutter of 1/20 seconds.

▲ Aperture F2.8 Shutter speed 1/40s ISO 800 exposure compensation 0

▲ aperture F2.8 shutter speed1/60seconds ISO 800 exposure compensation 0

▲ Aperture F2.8 Shutter speed 1/80 seconds ISO 800 exposure compensation 0

Outdoor Touit 12mm F2.8 performs well, with rich colors and slightly cold tones. Excellent performance in cool tones and dark details, which is also the consistent feature of Detou in the past.

▲ aperture F6.3 shutter speed1/50s ISO 200 exposure compensation 0

▲ aperture F6.3 shutter speed 1/640s ISO 200 exposure compensation 0.

▲ Aperture F6.3 Shutter speed 1/200 seconds ISO 200 exposure compensation 0

▲ Aperture F5.6 Shutter speed 1/800 seconds ISO 200 exposure compensation 0

Bian Xiao, the inevitable dark angle problem of wide-angle lens, also took a real shot.

▲ Aperture F5.6 Shutter speed 1/2000s ISO 200 exposure compensation 0

▲ Aperture F5.6 Shutter speed 1/800 seconds ISO 200 exposure compensation 0

It can be seen that this Touit lens also controls the dark angle very well, the dark angle phenomenon is not obvious, and there is no dispersion at the edge. Although the short flange distance lens has advantages in wide-angle lens imaging, this Touit 12mm F2.8 is absolutely excellent in ultra-wide-angle focusing, which is worthy of attention.