Carl zeiss lens comes with autofocus function?

After reading my repost, you will know why. With the answer you want to know, it will help you understand Zeiss:

Interview with Zeiss II: Why do we have no reason to play manual autofocus-repost?

Interviewee: Dr. Winfried Scherle, general manager and vice president of lens department of AG camera.

In March, Zeiss China Dealer Conference was held in Shanghai. The technical experts of Zeiss Company introduced the full range of Zeiss lenses and brand concept in detail for the dealers and users in China, and explained the performance characteristics and using skills of Zeiss lenses in detail. There are many agents of Zeiss, Shi, and the heavyweights of Zeiss headquarters.

In the last issue, we compiled some answers from Winfried Scherle about whether it will enter the 4/3 market in the future. Today, an interview was conducted on why Zeiss lens did not have autofocus or photometry, which has been provided for users' reference.

1. Why are Zeiss lenses more expensive than those of other brands?

This statement is generally incorrect. Some lenses (such as flat T * 85mm /f 1.4 ZE/ZF2) are cheaper than those of other manufacturers (such as Nikon's Nicole 85mm /f 1.4). Some lenses (such as macro plane lenses) have no corresponding models in the market. Carl zeiss's lenses are very valuable because our production standards are higher than other brands. In carl zeiss, lens production is not simply assembling glass and metal together: in the production process, the surface processing of each lens is strictly checked by experienced optical technicians, and each lens is calibrated by experienced workers to ensure the highest lens quality. Many workflows can't be completed by machines. Therefore, carl zeiss lenses can achieve the quality assurance of 100%, and each lens has undergone more than 100 rigorous tests in the production process. Carl zeiss does not rely on statistical data or spot checks to control quality, which has become the standard practice of cost saving in mass production.

2. Why doesn't Zeiss provide an autofocus lens? Do you have any plans for future production?

Our slogan "Environment originates from thought" gives the best answer. We hope to let the photographer control his images through our products. You can be more creative and exploratory. Your image has become unique, so you are a photographer. Therefore, this is not a technical issue, but a philosophical issue. We provide autofocus lenses for Sony's digital SLR, so technically, we have the ability to produce such lenses. Manual focus lenses can be designed and produced to focus more accurately (get smooth focus instead of patting and playing). It is impossible to achieve this through a micro autofocus motor. Moreover, in the field of professional film shooting, autofocus has no place at all.

3. Why doesn't ZF lens provide metering function for Nikon D200 and cheaper cameras?

Camera bodies like Nikon D200 (and "larger" models) are equipped with aperture links to control the aperture of lens models with AI or AIS interfaces, including our ZF lens. Therefore, exposure metering and aperture priority can be realized on these cameras. "Smaller" camera models (such as D90 and D5000) do not have such an aperture linkage rod designed for CPU-free lenses, so exposure metering cannot be realized. For these camera models, we strongly recommend using our ZF.2 lens, so you can use all exposure modes (aperture priority, shutter priority, program mode).

4. Do you think manual focusing is difficult to control? Any tips?

This is the first idea of many photographers. Manual focusing takes some time at the beginning, but you will be impressed by the setting accuracy he provides. Ultra-high rotation angle provides great convenience for various applications such as precise focusing. Based on these technical abilities, photographers have more time to focus on their subjects and more control over the results.

Of course, many independent manufacturers have provided replaceable focus screens for mainstream autofocus SLR cameras.

5. Why is the picture still blurred when the focus is displayed?

Accurate focusing is a necessary factor to achieve the best effect. In some cases, this may be a challenge. We recommend you to refer to the article "Manual Lens for Auto-focus Fuselage" provided by us.

6. What's the difference between 6.ZF and ZF.2?

ZF.2 lens is an enhanced version of ZF lens. They feature an electronic interface (CPU). The CPU enables ZF.2 lens to support all important operation modes, such as shutter priority, aperture priority and program automatic exposure, or set manual exposure settings on digital cameras that do not support manual exposure settings. Photographers don't need to set lens parameters in the camera menu, because now the lens transmits all standard data, such as the focal length and speed of the camera. These data can be seen on every picture of EXIF data.

In addition, ZF.2 lens is no longer equipped with lens linkage coupling rod. For this reason, you can't use the old Nikon camera to measure light (F, F2, Nikkormat series, etc. ) ZF.2 The lens aperture ring is equipped with a mechanical lock to lock the lowest aperture ring to prevent misoperation when taking pictures.

For technical reasons, ZF.2 lens has no half-step aperture setting at the lowest gear. This ensures reliable automatic positioning. The lowest aperture of ZF.2 lens is marked in orange, and the aperture ring is automatically positioned.

7. Why is it made in Japan?

Carl zeiss lenses are assembled in Japan for a reason. In Oberkochen, the German headquarters, the production capacity is not enough to meet the market demand in large quantities because of focusing on focal plane applications.

Together with Zhenshanneng, it perfectly combines carl zeiss's "lens manufacturing quality standard" and Zhenshanneng's productivity and experience. Implement various measures to ensure that the lens quality requirements in carl zeiss are met, even if they are produced in the production facilities of external partners.

Since the establishment of 1890 carl zeiss camera lens department, many excellent lenses designed by carl zeiss have been manufactured all over the world. Our partners include the famous C/Y bayonet, G bayonet, N bayonet and Kangtaishi 645 bayonet lenses produced by Kyocera in Japan before 2005.

In order to provide customers with high-quality lenses at reasonable prices, we decided that our Japanese partners should be able to manufacture C Sonnar T * 1, 5/50 lenses. They have long-term experience in manufacturing high-quality cameras and lenses of different brands. Our products produced in Japan all use the same measuring instruments as those in Germany, so as to ensure the quality control of the same specifications in carl zeiss and "Made in Germany". For more information about our product "Made in Japan", especially our cooperation with Zhenshanneng and "Rebirth" Zeiss Yikang Camera, you can check the related websites.

8. Compared with Canon or Nikon, what new technologies or glass materials are used in Zeiss lenses, and what are their advantages?

Like all lens manufacturers, we rely on purchasing optical glass from major glass manufacturers around the world. Exquisite optical design, based on our 120 years of photographic research and development and focal plane application experience, and all-metal lens barrel that does not allow the minimum error to be accurately manufactured, has achieved the excellent performance of Zeiss lens.

9. The cover of Zeiss lens is very thin, and it is easy to be damaged or lost. Is there any way to improve it?

We are improving the lens cover.

10. Can carl zeiss lens maintain its leading position in the market? How?

Carl zeiss is one of the leading optical companies in the world. Carl zeiss has optical products in many application fields: medical technology, surgical instruments, semiconductor lenses, scanning electron microscopes and glasses. Because our products have a wide range of fields, the development of technology is driven by many fields rather than a single field. Because carl zeiss can make use of this comprehensive strength in the future, we can maintain our leading position in optics.

1 1. Will there be more ZE lenses?

Our goal is to meet the needs of customers for various photography topics. Therefore, if we see the demand for carl zeiss lenses, we will produce more long-focus lenses.

12. In the era of digital photography, what kind of optimization has CZ lens made for digital cameras? What is the biggest difference between digital fixed-focus lens and film fixed-focus lens?

In the glass sheet (infrared filter, low-pass filter) of image sensor, it is sometimes necessary to have some differences in optical design between lens and thin-film lens, or to adjust the types of some lens materials. Therefore, our lens is optimized for the popular digital camera body.

13. Can the new ZezF lens be used perfectly on traditional film cameras?

Yes, some of our users have used our new lens on their fuselage, and the imaging quality is very good.

14.CZ, what is the relationship between Sony and Nokia?

We have cooperated with three different partners in different fields, mainly with Sony to develop system A, card machines and camcorders, and with Nokia to develop mobile phones. Logitech cooperates with us in network camera, and we work with these partners to develop new cameras and camera module components.

15. Is it possible to introduce lenses with larger aperture, especially ZM lenses?

The main advantage of paraxial camera system compared with SLR camera system is more compact structure, and the design of ultra-high-speed lens often conflicts with this point. Carl zeiss currently offers a wealth of ZM lens products, which can provide a very good balance in terms of image quality, lens response speed, appearance size, weight and price.

16. What is the relationship between Contaxcy lens and new Zeiss?

In our current SLR camera lens series, the optical design of some models (such as F 1.4/85mm) is improved on the basis of the previous Contax CONTAX /Yashica system, while other models, such as (F2.0/ 100mm), are newly developed designs, and 2100mm is newly introduced.

17. Contax G lens and new Zeiss?

Because the two systems have completely different mechanical and optical systems (back focal length, lens base distance, automatic focusing and manual focusing), ZM lens and G system do not have completely corresponding lenses, and some lenses are only similar in basic design.

18. Does Zeiss have any plans to launch the ZI paraxial digital camera?

There are no plans at present.

Because the demand for paraxial cameras is far less than that of SLR cameras, however, its development cost is close to its demand, so it is unrealistic to provide high-quality Zeiss digital paraxial cameras at reasonable prices at this stage.

Zeiss camera lens department will continue to develop, produce and sell high-quality photography and focal planes, just like in the previous 100 year.

19. Do you have original Zeiss filters?

In our current product line, except our CSC filter (color difference compensation filter) is designed for digital paraxial cameras, we do not provide other filters for photography.

20. Does Zeiss have a zoom lens?

In the foreseeable future, we have no plans to produce zoom lenses, and we will focus on fixed-focus lenses.

2 1. Will Zeiss produce telephoto lenses?

For telephoto lenses (for example, the focal length exceeds 200 mm), autofocus is a great advantage in many shooting fields today. Therefore, we can't see that there will be a great demand for manual focusing telephoto lenses in the market. The focal length is between T* 100 mm /f2 and 200 mm, and we plan to release some new lenses in the future.

22. Why does the lens have to go back to Japan for repair after the warranty period, and the maintenance cost is still so expensive?

Fortunately, the number of our products returned to the factory for repair is very small. Our maintenance during the warranty period is carried out in Germany. As for the products that have passed the warranty period, we can repair them directly by our manufacturers, because it is not cost-effective to store a large number of spare parts in Germany.

The lens of 23.50/F2.0 performs better than the lens of 50/f 1.4, even though the aperture is smaller. Is this correct?

Every shot is a compromise after considering various factors: performance, speed, size, weight and price. Makro-Planar T* 50/f2 is a more precise lens than Planar T* 50/f 1.4, so it is bigger, heavier and more expensive. Plane T* 50/f 1.4 is a compact lens with high cost performance regardless of speed. Especially when used in large aperture, the overall picture quality of macro plane T* 50/f2 is very good.

24. Does Zeiss provide some lenses for Sony digital SLR cameras?

Zeiss/Sony lenses have been sold in online stores in carl zeiss (for end users only). Sony sells exclusively through its distribution channels.

25. Why are ZE lenses always unavailable?

For some reasons, the demand for ZE lenses greatly exceeds our output. We are working hard to improve the distribution structure to ensure smooth supply in the future.