Definitely better contrast but can't see if sharpness is better, it appears to be but that can happen when contrast is increased, but still images look better with more contrast

Where can I learn about compound lenses?

What is the purpose of 2 stacked lenses?

@MakeTechCreate

2 ай бұрын

It creates a very fine focus point.

Was this supposed to be a demonstration of photo engraving or incised 3D engraving? Far too much power for the speed for both lenses I saw no attempt to set the optimum focus for the speed and power you chose for either lens. Was this a dithered image or a grayscale image ? I note that Lightburn has set your line interval to 0.1mm Did you check that your machine was capable of producing 0.1 dots (or lines) before running the tests. If your dots ( or line thickness if this is grayscale engraving) are more than 0.1mm then that accounts for the depth of cut because you will be burning each pixel multiple times. The compound lens has much greater "spot" intensity and requires much lower power than a normal lens. I note you ran both lenses at the same speed and power. This is not a fair comparison for either lens.

@MakeTechCreate

2 жыл бұрын

"Old Man Yells at Cloud" Go be grumpy on your own channel and leave everyone else alone you old troll!

@garysnyder743

2 жыл бұрын

@@MakeTechCreate The compound lens result looks very similar to borax treated wood with a regular lens. Can't really see the value for engraving. One would think the feature of a compound lens would be greater depth of field - therefore a cutting advantage, not an engraving advantage. Where's the cutting demo video?

@ballardgw

2 жыл бұрын

@@garysnyder743 Compound lens is not for cutting, only engraving.

@walterkennison802

Жыл бұрын

@@garysnyder743 The compound lens has a narrower depth of field the gem in the lens is the ability to engrave without cutting deep into the substrate

Hi have you thought of putting USA CVD II-VI ZnSe 1.5” and 2.5” so both lens are USA lens To make the compound lens instead of the cheap 1.5”

@MakeTechCreate

8 ай бұрын

I actually haven't tried that. Have you had better performance from USA made lens?

@Martin-ll7jc

8 ай бұрын

@@MakeTechCreate got some lenses coming tomorrow so I’ll let you know

@Martin-ll7jc

8 ай бұрын

@@MakeTechCreate so testing just now I had some mdf and it looks amazing Just 2.5”USA. 1.5”USA When it’s done I’ll post it to you?

@MakeTechCreate

8 ай бұрын

Awesome 👌 sure, would love to see the results.

what are your settings here? thanks

Is it with air assist on ?

@MakeTechCreate

9 ай бұрын

Yes.

With these 2 lens are they both convex sides up. Thanks martin

@MakeTechCreate

Жыл бұрын

One is convex, and the other is flat.

@Martin-ll7jc

Жыл бұрын

@@MakeTechCreate are you sure I’ve been told it’s convex both sides up It’s the cloudRay compound lens Thanks martin

@MakeTechCreate

Жыл бұрын

@Martin just checked. Yup, you're correct... convex on both lens.

Nice

@MakeTechCreate

2 жыл бұрын

Thank you!

Is that a K series head? So it just screws straight on?

@MakeTechCreate

Жыл бұрын

Yes, it is. It comes with adapters for different heads. If you look at the cloudray site, you can see all the different theards it fits.

Stock lens is clearly better and I dont see why you need to stack two lenses together, thats odd. Second method produced way more burning, which means that focus was simply bad. Lasers do not burn anything, they evaporate material, so ideally you would not see burn at that depth.

@MakeTechCreate

Жыл бұрын

The concept is to create a smaller focus point for more details... but, yes, it only really applies to a few applications. For most engraving, the stock lens is just fine.