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Which HDMI Microscope Camera and Zoom Lens for soldering

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Feuerbard:
Anyone tried 3d hdmi microscope ?

https://youtu.be/CGgf_B2hzSM

thm_w:
We have Eakins IMX334 and IMX307 autofocus, both are claimed 1080P 60FPS. Autofocus was absolutely worth the $65 difference in price between the two.
- IMX334 130ms latency
- IMX307 60-70ms latency

Monitor is going to be ~10-30ms of that total.
I would never use these for soldering personally. If you want to sit up straight you can get an ergo microscope or a mantis. But its not as cheap.


--- Quote from: Feuerbard on August 30, 2024, 08:45:57 pm ---Anyone tried 3d hdmi microscope ?
https://youtu.be/CGgf_B2hzSM

--- End quote ---

This is for inspection only, no use for soldering at all.

pcprogrammer:

--- Quote from: PlainName on August 30, 2024, 07:18:13 pm ---No, a zoom lens will adjust the magnification via a ring. You focus by moving it up and down a rack, but only a little bit. More expensive ones have the focus and magnification as rings - just like you get on a camera (you don't walk towards or away from your subject to focus those!).

--- End quote ---

The lens I have uses a ring to adjust what I think is the zoom (magnification) but can only become sharp at the correct height needed for the set magnification. To do both magnification and focus at the same height it would indeed require two rings on the lens.


--- Quote from: Phil1977 on August 30, 2024, 07:57:12 pm ---You can buy both types of macro lenses.

The prime lens type with fixed focal length but adjustable focus does its job as pcprogrammer has described. The other zoom-type does it as mentioned by PlainName. Unfortunately the sales people at Aliexpress or co often neglect correct terminology.

One thing to mention: The image quality of the cheap prime lenses is often much better than of cheap zoom lenses. The highest magnification with the prime lens has a very small distance but often astonishingly good sharpness. The sharpness at the highest zoom level of these entry level microscope lenses is often compromised.

--- End quote ---

But reading the above suggests the lens to have adjustable focus? This would mean that the magnification is based on the height. Have to study the theory on lenses again to refresh what I learned about them.

At the shortest focus able distance the image does look quite sharp and is magnified ~150 times.

Even if the terminology in the sales ad would have been correct I would not have understood the meaning of it without research.  :-DD


--- Quote from: thm_w on August 30, 2024, 11:57:55 pm ---We have Eakins IMX334 and IMX307 autofocus, both are claimed 1080P 60FPS. Autofocus was absolutely worth the $65 difference in price between the two.
- IMX334 130ms latency
- IMX307 60-70ms latency

Monitor is going to be ~10-30ms of that total.

--- End quote ---

No idea what the perceivable latency is for the human eye. Hearing can be as fast as 5ms (real sharp musicians can detect shifts in notes with that kind of delay) With old movies at 25 frames per second (40ms) it is already seen as smooth, so triple that should be noticeable, but with my setup I don't have a problem when moving something under the lens to position it where it needs to be. The shacking on my hand is more of a problem.  At 60 years old it is definitely not as stable as it was 30 or 40 years ago. :palm:


--- Quote from: thm_w on August 30, 2024, 11:57:55 pm ---I would never use these for soldering personally. If you want to sit up straight you can get an ergo microscope or a mantis. But its not as cheap.

--- End quote ---

A friend of mine has a microscope with eye pieces and to me that felt very uncomfortable and still required bending the head forward a bit. The benefit of it being stereo made not that big a difference for me. It will be a matter of getting used to it.

And yes the mantis would be perfect, but at more then 10 times the price of what I have now, way to expensive for a hobbyist like me.

Postal2:

--- Quote from: thm_w on August 30, 2024, 11:57:55 pm ---We have Eakins IMX334 and IMX307 autofocus, both are claimed 1080P 60FPS. ...

--- End quote ---
IMX385 claimed 120 Hz speed (sensor speed) and much more sensitivity.


--- Quote from: thm_w on August 30, 2024, 11:57:55 pm ---... I would never use these for soldering personally. ...

--- End quote ---
I agree. So I hope that a normal camera will give such an opportunity. But there are doubts.

dredd:
Well. Fark Aliexpress and "Eakins Store" in particular :)
store Id = 836673

EDIT: I found the piece I forgot to ship back with the stand, bracket that connects two pillars. They were totally right issuing partial refund. My bad.

I ordered "Industrial Binocular Trinocular Microscope Camera Stand" US$99 and "Trinocular Stereo Microscope Head" (their Choice program) US$150

Tried to return both because exit pupil was so small it was unusable. The head (Choice item) was refunded in full. But stand was partially refunded, just US$76 out of $100. Support in two separate chats said "yea, we'll fix it, have a nice day sir", Nothing was fixed. $75 refund came through, Appeal button resulted in "the newly updated proof from the local warehouse. Since the item you return is different, we cannot arrange refund for you.".  I sent it back exactly as I have received it.
/rant lol

I have cheap 20x/40x stereo and it works much better and for infrequent use it'll do. Maybe I'll duct-tape 0.3x barlow to it - my very last aliexpress purchase :)
https://www.eevblog.com/forum/testgear/0-7x-barlow-lens-for-this-stereo-microscope-possible

No model names, no brands (everyone and their dog is reselling the few OEMs that-cannot-be-named), missing or confusing specifications, 300 combinations - "Colour" of same things - save your time and don't shop at Aliexpress!

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