As the saying goes, if you are greedy and chew too much,

After the excitement, Kangchi did not immediately build any aircraft carrier, but placed an order online and purchased a batch of optical plastics and aluminum powder needed for coating.

It's still honest, it's more realistic to rub the camera first.

Next, Kangchi still has an important puzzle that has not been solved.

How do I get Mastery Points?

This is a good thing, and it can save an unknown amount of R&D funds!

It's a pity that Kangchi studied for half an hour, but he didn't come up with a reason, and as the sky got dark, he had to pack up the shop and prepare to go home.

"Hey, it's another day of income hanging."

When the door closed, Kangchi couldn't help but lament that the current business is not good.

However, it is normal to engage in equipment maintenance and not open for a day.

These equipment are generally worth a lot of money, and most of them are supplied like a father after they are bought, how can they be broken at every turn?

Rather than repairing, reselling second-hand goods makes money faster.

But this kind of reselling and speculative business, Kangchi can't look down on it.

Just like he looks down on those anchors who graduated from prestigious schools, but went to live broadcast and sell goods,

Isn't it a waste of the country and society's cultivation of you to do what you can do after graduating from junior high school?

Isn't it good to make the money you deserve?

On the way home, Kangchi bought a one-man meal at Wallace, ate it as he walked, and settled the dinner by the way when he got home.

The first thing I did when I got home was to take out the upgraded lens, sit down at my workbench at home, and start disassembling and analyzing the lens.

Although I think that the structure of this manual prime lens will certainly not be very complicated, for the sake of insurance, Kangchi will take photos and record every part that is disassembled.

In a few moments, the table was filled with various parts and small screws.

This structure ......

It's a lot more complicated than what he did himself!

After doing the preliminary disassembly, Kangchi has a certain understanding of the structure of this lens.

The next step is to draw drawings of these parts and do further careful analysis.

To understand a product, you have to know what it is, and why it is.

As time passed, Kangchi's eyes became brighter and brighter.

Although there is no laboratory to verify and no accurate digital simulation calculations have been carried out, Kangchi has been inspired by the order and parameters of the optical components.

It's just that this kind of epiphany comes more from the intuition of a craftsman, and lacks systematic and scientific argumentation.

"There's still a lot to learn!"

Kangchi sighed, put away the drawings, and placed a few basic optical books on the Internet.

After doing all this, he reassembled the lens with memory and understanding of the drawings.

Whew-

With the last screw screwed on, the lens was successfully assembled and the familiar panel reappeared.

[Item: Daqin Optics 50mm F1.4 Lens]

【Manufacturer: Kangchi】

[Item Level: 2]

[Experience: 135/400]

[Mastery Points: 0.3]

[Item Status: Intact, Analyzable]

Wait a minute?

"Mastery point 0.3?"

When he saw a number change on the panel, Kangchi was immediately excited.

In the afternoon, after using the only bit of mastery, the number was always 0, but it would become 0.3......

Could it be that this mastery is acquired through study or disassembly?

Kangchi immediately looked for a copy of "Mechanical Design: Basic Principles, Drawings and CAD Techniques" and looked through it carefully.

Half an hour later, Kangchi picked up the camera again and looked at the panel.

[Mastery Points: 0.31]

It really worked!

But what the hell is 0.01?

Study hard encouragement award?

emm~

Or maybe it's because you didn't take it seriously enough and learned too little?

Next, Kangchi carried out a very serious disassembly and assembly of this lens.

[Mastery Points: 0.33]

That's fine, and it seems to have risen a little more than reading a book.

In any case, Kangchi has finally figured out the system!

As long as you gain new knowledge through learning, or gain practical experience through manufacturing, maintenance, etc., you can increase your mastery points!

Kangchi put down the camera and couldn't help but yawn.

I glanced at the time, and before I knew it, it was already twelve o'clock.

The body is the capital of the revolution, and with the golden finger about to make a big difference, he doesn't want to burp anymore.

Kangchi immediately went to wash up and sleep, recuperating for the next day's battle.

Following.

The streets were filled with a faint morning mist, and the whole city seemed to be still asleep.

Several groups of performers who got up early but were not picked by the crew were still squatting on the side of the road and eating steamed buns, looking at every passing person and car.

Once upon a time, Kang Chi also wanted to be an actor, but as he grew older, he lost interest in this kind of career with a bit of a gambling nature.

Especially after experiencing the wave of the rise of short videos and live broadcasts, I am even less interested when I see the mess after the ebb tide.

I'm an honest man.

Down-to-earth hard work is the traditional virtue of the Chinese people!

Kangchi silently gave himself a thumbs up, opened the store and started a new day's business.

Except for a few equipment rental shops with people 24 hours a day, the entire street is estimated to be the first to open in Kangchi.

The main thing is that he usually goes to bed early and gets up early, and he is single, so what else can he do except come to the store early to knock and knock?

Just after Kangchi finished rubbing a 50mm prime lens, a courier guy knocked on the door and walked in.

"Boss Kang, your courier."

Kangchi hurriedly stopped the work at hand, took the courier and looked at it, and sure enough, it was the materials ordered yesterday.

Although I am looking for suppliers in the same city, this efficiency is also worthy of praise.

"Thanks, can you wait a minute, I just have a shot to send."

Seeing the courier brother nodding, Kang Chi quickly packed the footage that had just been rubbed out and sent it to the art academy student.

After the courier brother left, Kangchi immediately opened the package, and after confirming that the materials inside were fine, he began to try to make a doublet achromatic lens in front of the workbench.

The optical resins he ordered were all square-shaped, and the first thing to do was to polish out the shape of the lens, then polish, coat, and finally glue the concave and convex lenses together.

This process may not sound difficult, but the actual operation is extremely difficult, especially the surface of the convex lens and the concave lens are polished tightly, which is very difficult to use.

If the normal production process is followed, this should be done with high-precision machining machine tools, or with high-precision abrasives to directly reshape the material.

But Kangchi doesn't have this condition now, so he can only rely on hand rubbing.

The main thing is ingenuity!

After marking the material with a pen, Kangchi skillfully turned on the grinding machine and began to make the lenses according to the drawings drawn last night and his own experience.

For the first time, the gap between the two lenses can be stuffed with a full two pages.

The second time, more than a dozen bubbles appeared when bonding,

Third, fourth......

After more than a dozen attempts, Kangchi finally succeeded in obtaining a doublet achromatic lens!

He excitedly picked up the lenses and saw that a panel had popped up on them.

[Item: Double Achromatic Lens]

【Manufacturer: Kangchi】

[Item Level: 1]

[Experience: 0/100]

[Mastery Points: 1.35]

[Item Status: Intact, Analyzable]

It's wonderful to get a full 1 mastery point!