Technological power starts with upgrading lenses

In addition to the insurance of technology retention, Kangchi has also established a patent fortress on materials such as positive and negative electrodes and electrolytes.

However, using this patented technology, only sodium batteries with an energy density of 150Wh/kg can be produced.

If someone wants to bypass this barrier and create a sodium-ion battery with the same or even higher energy density, the difficulty will increase exponentially.

This is actually what the islanders do when it comes to hydrogen energy.

They built a toll station directly at the starting point of the hydrogen energy technology route, so that everyone who wants to take this road has to pay a protection fee.

The key is, their roads haven't been built yet, so you have to build your own roads if you want to go this way.

Therefore, except for island countries, other countries have no interest in playing with hydrogen energy.

But Kang Chi was much kinder than them. He not only built a toll station, but also repaired the road behind it. If others really wanted to leave, he didn't mind charging a toll to let them pass.

But after reaching 300Wh/kg, sorry, that is his private domain.

Moreover, the road from 150-300Wh/kg is so long that most people would not be able to complete it in ten or eight years.

And by that time, maybe sodium batteries will be almost eliminated by new batteries...

——

Huacheng, Yaotai Shiguang Film and Television Media Co., Ltd.

When He Jiyue took over the express delivery from the SF delivery boy, he actually resisted in his heart.

Because of this express delivery, his pockets were almost emptied...

On the surface, he is the boss of a film and television media company, which sounds very prosperous, but in fact there are only two people in this company.

Him, and his little wife.

The company is actually a 'small workshop' that has just been established, and it can't even be called a studio.

He Jiyue originally worked as a cameraman for an outsourcing company for a TV station. He was actually quite happy that the food program he filmed could be broadcast to the audience on TV.

However, in the list of creators at the end of the film, the name of the outsourcing company never appears, let alone a small cameraman of the outsourcing company.

And now even the TV stations are heavily involved, let alone their outsourcing companies.

All employees were squeezed to death, and under the banner of the TV station, batch after batch of 'interns' were recruited to change the company's blood. The purpose was to eliminate these 'highly paid' veteran employees who had been working for a long time.

Although the group of interns call them "Master" and "Teacher" every day, God knows that their monthly salary of "Teacher He" is actually only more than 6,000 yuan...

In the end, He Jiyue resigned, and after discussing it with his wife, he finally decided to start his own company and start a self-media business.

Unfortunately, the self-media industry is also deeply involved.

He Jiyue's video shooting skills are indeed great, but he is not good at producing video content with an online feel. Therefore, after working on it for more than half a year, he can only say that he will starve to death.

Whether you can add extra meals depends on whether you can make some extra money.

This so-called extra money is to shoot product videos for customers, especially food videos, which he is good at.

Food photography is a great test of photography skills, especially lighting arrangements. Only when the light is transparent can the picture be appetizing, and this is what He Jiyue is best at.

Therefore, the self-media did not take off, but he gradually became famous for shooting food advertisements, so he planned to develop the shooting of food advertisements into his main business.

But food photography, in addition to testing photography skills, also has a very critical thing, and that is the shooting equipment.

Because taking food photos requires the use of a large number of upscaling lenses, only through slow motion can the most subtle aspects of the food be captured.

For example, sprinkling hot oil on a plate of steamed fish takes only a moment, but through the upgraded lens, you can clearly see the moment when the fish meat comes into contact with the hot oil, and the tangy aroma suddenly emerges...

Therefore, ordinary SLRs and mirrorless cameras simply cannot support He Jiyue in shooting more professional and high-end food advertisements.

In the past, he used company equipment. He only had a 5D3, which his family bought for him when he was in college.

Using it to shoot ordinary videos is barely enough, but using it to shoot food videos severely limits his professionalism and business expansion.

Therefore, the equipment must be updated.

But professional cameras are too expensive.

Don't even think about the likes of RED and Alai. The cheapest camera body alone can easily cost RMB 180,000 or 80,000, which is simply not something a small film and television studio like him can afford.

What he could reach while standing on tiptoes was probably Sony's A7S3 and Songxia's GH5S, two video mirrorless cameras.

Among them, GH5S is relatively cheap. You can buy a body and a set of lenses and other accessories for about 20,000.

However, because the size of the M3/4 sensor is too small, its upgraded image quality will suffer from very severe image quality compression as the frame rate increases.

Especially after upgrading to 240 frames, not only are there dense noises, but also horizontal stripes often appear.

In addition, it can only shoot at 1080P, so the image quality cannot be used commercially.

All that's left is the A7S3,

This Sony full-frame video mirrorless camera has one of the more powerful features, which is that it can shoot 4K120 frames at an upgraded level.

However, the 120 fps upgrade is too low for food photography. In addition, e-commerce product videos are mainly 1080P, which is not practical for He Jiyue.

His main concern is still the 240-frame upgrade of 1080P.

The upgraded image quality of the A7S3 in 1080P shooting is better than that of the GH5S, and it also has a 10-bit 4:2:2 color depth. The space for post-production color correction is much larger than that of the GH5S, and the color will not be broken by just pulling the curve.

But what about the price? Because the Wuan produced by Daqin Optics does not threaten Sony’s video mirrorless camera, the price of this machine has not been reduced, but has been increased.

It is more than twice as expensive as the GH5S, costing 25,999 yuan.

Including lens memory card and other accessories, a set costs at least 50,000 to 60,000 yuan.

This is still very stressful for He Jiyue, who is not financially well-off and whose career has just started.

And once you decide to develop into professional food photography, the lighting equipment must also keep up, right?

A set of 300W LED video lights costs more than 10,000 yuan.

For upgrading photography, the shutter speed is usually faster and the exposure time of each frame is limited, so it is very light-consuming. It needs at least 500W, and one light costs six to seven thousand.

This is even when domestic brands have lowered their prices...

Photography costs money anyway, let alone professional photography.

He Jiyue originally thought that Daqin Optics would be his savior, especially after watching the video of classmate Li next door and hearing from him that Daqin Optics' video machine would be available soon.

result,

Believe him!

He Jiyue waited for more than three months, and a full eight months had passed since classmate Li next door posted the video.

Daqin Optics’ video machine doesn’t even have a ghost in it!

For this reason, he went to classmate Li's video every now and then to flog the corpse. After that, he also went to Daqin Optics' official WeChat account to update it.

Until recently, when he saw netizens discussing Mr. Kang’s plan to build a charging station, he finally became discouraged and decided he could wait no longer.

So I decided to buy a set of A7S3.

Body-25999,

24-70mm F2.8 zoom lens, -10999,

90mm F2.8 macro lens, -6999,

160GType A card, -2999,

…

Just received the goods today,

My heart is still bleeding.

He doesn't know how many videos he has to work hard to shoot and how many nights he has to stay up to edit the films before he can earn back the equipment fee...

Just when He Jiyue took out his mobile phone and was about to take an unboxing video in case there were any problems and he needed to contact after-sales service, a new reminder for the new treasure suddenly popped up at the top of the screen.

[The store you are following, the Daqin Optical Tmall official flagship store, is now available! 】