In addition to the insurance of technology preservation, Kangchi has also set up a patent fortress on materials such as cathode, anode and electrolyte.

It's just that with this patented barrier technology, only sodium batteries with an energy density of 150Wh/kg can be manufactured.

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.

In fact, this is what the island people are engaged in in hydrogen energy.

They built a toll booth directly at the beginning of the hydrogen technology route, so that everyone who wants to go this way will have to pay a protection fee.

The point is, they haven't built the road well, and if you want to go this way, you'll have to build it yourself.

Therefore, except for island countries, other countries are not interested in playing hydrogen energy with them at all.

However, Kangchi is much kinder than them, not only did he build a toll booth, but the road behind him was repaired, and if others really wanted to walk, he didn't mind charging a toll for them to pass.

But after 300Wh/kg, sorry, it's his private domain.

Moreover, the road from 150-300Wh/kg is so long, and the average person will not be able to complete it in ten or eight years.

And by that time, maybe sodium batteries will be phased out by new batteries......

——

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

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

Because of this courier, his pockets were almost emptied......

On the surface, he is the owner of a film and television media company, which may sound like a good thing, but in fact there are only two people in this company.

him, and his little daughter-in-law.

In fact, the company is also a 'small workshop' that has just been established for a short time, and it can't even be called a studio.

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

It's just that the name of the outsourcing company never appears in the list of creators at the end of the film, let alone a small camera of the outsourcing company.

And now even the TV station is very involved, let alone their outsourcing company.

All employees were squeezed to death, and under the banner of the TV station, batch after batch of 'interns' were recruited to change blood for the company, with the purpose of eliminating them, the 'high-paid' old employees who had worked for a long time.

Although that group of interns call teachers and teachers every day, God knows that their 'Teacher He' salary is actually only more than 6,000 yuan per month......

In the end, He Jiyue resigned, and then discussed it with his wife, and finally decided to start his own company and start a self-media.

It's a pity that the self-media industry is also involuted.

The shooting level of He Jiyue's video is really good, but he is not good at producing video content with a sense of networking, so he has been engaged in it for more than half a year, and he can only say that he will not die of hunger.

Whether you can add food depends on whether you can get some extra money.

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

Food shooting is a great test of photography skills, especially the technology of lighting arrangement, the light is transparent, and the picture has an appetite, and this is what He Jiyue is best at.

Therefore, the self-media did not get involved, but he gradually became famous in the field of food advertising, so he was ready to develop food advertising shooting into his main business.

But food shooting, in addition to testing photography skills, there is also a very key thing, that is, shooting equipment.

Because filming food requires a lot of upscaling shots, and only through slow motion can the most subtle side of food be captured.

For example, sprinkling hot oil on a plate of steamed fish is a matter of moments, but by upgrading the lens, you can clearly see the moment the fish and the hot oil come into contact, and the tangy aroma comes out of the ground......

Therefore, ordinary SLR and micro mirrorless cannot support He Jiyue to shoot more professional and high-end food advertisements.

In the past, in the company, he used the company's equipment, and when he only had one in college, his family bought him a 5D3.

It is barely enough to shoot ordinary videos, but it is used to shoot food videos, which seriously limits his professional level and business development.

So the device is definitely going to be updated.

But professional cameras are too expensive.

RED and Alai don't have to think about it, just the cheapest fuselage is 180,000 yuan, which is not something that a small film and television workshop like him can afford at all.

What he can get on tiptoe is estimated to be Suoni's A7S3 and Songxia's GH5S.

Among them, GH5S is relatively cheap, buy a fuselage plus a set of lenses and other accessories, you can get it for about 20,000 yuan.

However, due to the small size of the M3/4 sensor, its upgraded image quality has a very serious image quality compression with the increase of the frame rate.

Especially after rising to 240 frames, not only is it dense with noise, but also horizontal stripes often appear.

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

The rest is A7S3,

This Soni's full-frame video micro-mirror has a more powerful feature, that is, it can shoot 4K120 frames of upgrading,

However, the 120 frame upgrade is too low for food shooting, plus the e-commerce product video, mainly 1080P, He Jiyue is not very practical.

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

A7S3The upgraded image quality in 1080P shooting is better than GH5S, and it is also 10bit 4:2:2 color depth, and the space for color grading in post-production is much larger than that of GH5S, and there will be no color fault when you pull the curve.

But the price, because the Wu'an produced by Daqin Optics did not threaten Suoni's video mirror, so this machine not only did not reduce the price, but also increased the price.

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

With the addition of accessories such as lenses, memory cards, etc., a set will cost fifty or sixty thousand.

This is still very stressful for He Jiyue, who is not well off the economy and has just started his career.

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

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

And because the shutter speed is usually relatively fast, the exposure time of each frame is limited, so it is very devastating, at least 500W, and a lamp is six or seven thousand.

This is still the case when domestic brands have knocked down the price......

Photography burns money anyway, let alone professional photography.

Originally, He Jiyue thought that Daqin Optics would be his savior, especially when he watched the video of classmate Li next door, and heard him say that Daqin Optics' video machine would come out soon.

outcome

Believe in his ghosts!

He Jiyue waited for more than three months, and eight months have passed since the time when Li released the video next door.

Daqin Optics' video machine, there is not even a ghost shadow!

For this matter, he went to classmate Li's video every other day to whip the corpse, and when it was over, he went to Daqin Optics's official Weibo to urge a change.

Until recently, he saw that netizens were discussing Mr. Kang's going to build a charging station, and finally became disheartened and decided that he couldn't wait any longer.

So I decided to chop my hands and bought a set of A7S3.

Fuselage-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.

I don't know how many films he has to work hard to shoot and how many nights he has to stay up to cut films before he can earn back the equipment fee......

Just as He Jiyue took out his mobile phone and was about to shoot an unboxing video, in case there was any problem and he needed to find after-sales, a new reminder suddenly popped up at the top of the screen.

[The store you pay attention to is new, the official flagship store of Daqin Optics Tmall! ] 】

(End of chapter)