Is the distortion of Leica Q 28 mm lens well controlled?

Leica Q is a digital camera with fixed lens in Quan Huafu. As for the "distortion control" (also called distortion) of this camera lens, don't worry at all.

Because this camera can't replace the lens, Leica directly provides "digital correction" for the built-in lens in the camera design, that is, the operation of cutting and stretching the picture. So as long as you don't use special professional software to decode the raw file of Leica Q, you can't find the distortion of this camera at all.

As for the actual performance of Leica Q's lens, this is a controversial topic.

As early as 20 15, some users found that if we avoided the popular software such as LR, ACR, Capture 1 and used a decoder named rawdevelopeverversion1.8, we could display the original RAW file status of Leica Q (without digital correction), which exposed many problems.

This article reveals the following:

On the original raw file, the raw file of Leica Q has obvious dark corners, and it has been obviously processed and cut in the machine.

Leica Q user documentation describes that its sensor size is 24mm*36mm, with a total pixel of 26.3 million and an effective pixel of 24.2 million. However, due to the obvious cropping of the original image (see the above picture), the total pixel of 26.3 million cannot be met, and there are 24.2 million pixels left after cropping.

1. Leica Company acknowledges that Leica Q has implanted an algorithm plug-in for interpolating missing pixels and correcting tensile deformation.

B, Leica said that there will be errors when measuring the focal length of the lens in the close-range test.

C of course, the most wonderful thing is the explanation of cmos. Leica's email actually said that the actual size of cmos sensor used by Leica Q is larger than that of Quan Huafu, but after cutting, it becomes the specification of Quan Huafu. ...

Of course, people have different views on the matter of Leica Q.

Photographers who really pay attention to image quality and performance are unlikely to choose products like Leica Q. Users who choose Leica Q often not only pay attention to image quality, but also consider brand value and comprehensive product design.

Lycra Leica, Q, a high-end luxury camera that can't change the lens, there are various opinions about this camera. How to do it specifically? What is this? Let me analyze it in detail:

Google's algorithm also stimulated Leica to recruit more computer programmers to improve its algorithm.

Digital correction is really very useful and necessary.

First, Lycra Q, like Audi BMW, will be scrapped after 10, and its value will be cleared.

Some people think that Lycra Q can be passed on to future generations. This is really thinking too much.

Lycra Q does not have the function of wealth transfer.

Second, why is Lycra Q like BMW?

1, digital body, basically has no so-called long-term collection value.

However, BMW and Audi will also experience price fluctuations.

3, therefore, Lycra Q will also have price fluctuations, and irrational speculation and rise will occur at some point. Of course, this kind of hype and rise is actually mainly controlled by a few bookmakers or businesses.

4, most people, if you are not a local tyrant, but buy an unknown Lycra Q, then in the end you will be very disappointed and even angry.

5. If you just have the mentality of buying a BMW Mercedes-Benz and don't care about the depreciation of 65,438+10,000 yuan a year, you can of course buy a Leica digital camera at will.

3. Why is Lycra Q like BMW Benz?

1, digital photography and film photography are really different.

2, digital photography, CPU or DSP processor, must optimize the image.

3. In other words, if you separate the lens of Lycra Q and install it on the fuselage of some film cameras after modification, then the problem will be exposed and the original shape will be revealed.

4. In the digital photography era, some optical schools in the traditional film photography era were reserved for CPU or DSP.

5, such as distortion, dark corners, color cast and so on!

These are all things that can be ignored when designing a lens.

Then, hand it over to post-processing.

For example, recently, Google developed an algorithm to take a portrait with a super wide-angle lens and deform the face.

In addition, after the recent layoffs, Leica recruited a new computer software engineer to develop various practical algorithms.

To sum up, we should not look at Leica lenses in the digital age with the requirements and outdated understanding of photographic lenses in the film age. There is no comparability at all.

Lycraq's distortion control is perfect. But from the point of view of pure optics, it is almost impossible to achieve perfect distortion control by relying on such a thin 28mm lens. Solution: digital correction! Nobody can see it anyway!

Distortion is the last link in lens design, and it is also the most easily overlooked link. Because it really doesn't matter! ! !

In addition, there are now digital solutions. At present, the lens distortion of all card cameras with non-replaceable lenses is almost not corrected. Leave it to digital correction!

Control skills of lens

Skill is a technique that is commanded by the brain and executed by the fingers.

I haven't learned anti-distortion technology yet, so I need to practice more.

Don't blame the equipment, it's the tool.

There is a black man in the car who doesn't laugh.

I practiced avalanches.

This is a very good street camera. Distortion is your control over the mirror. The camera also provides screens with focal lengths of 35mm and 50mm, which are basically undistorted, with fast focusing speed and good dark parts. This is a good camera.

The distortion of the machine needs to be explored slowly, and then its advantages should be used reasonably. There is no perfect machine.