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Just tried it, good tip even though it makes me look like a tit.

I'm in the same boat. I could certainly use one, but don't need one. Stop posting about this, Dave! I'm still recovering from my rigol and fluke purchases, I don't need another expensive tool enticing me!

I did not think I needed one but I am the same with good recommendations and recovering from past purchases. I got one and have tons of uses for it now. I'm also getting some Barlow's and going to use it with an old telescope. Weather permitting I'm in the UK. it works brill for spotting marks on so called new items. Call out the seller and normally get a refund of some kind or a Free return when the items not worth it. :-) One of my best buys and the grand kids also love it they now come armed with items they wish to see with Grandads Super Zoom power and they also bring a usb so they can get a copy of the pics. Worth it weight in gold just to see them so engaged and who knows Dave may well be responsible for the next Astronauts AKA Tim Peaks, Physicist Bryan Cox, or Engineer James Dyson. :-)

Which extension tubes?

were you able to test it? I'm trying to find out if it's possible to get the area of 20x15cm with a 120x and 0.35 barlow, even if it means mounting camera 1m above the desk. could you check that for me please?

lynton cox Anzacs made supersecret lenses for bomb sights?

I think it's faulty.

I don't need to use a microscope very often, so I also use my dslr with a 70-200mm lens, a close up lens and 2x and 1.4x teleconverters (barlow lenses). That works amazingly well with a great zoom range, autofocus, more than 300mm working distance, and at maximum magnification I get an amazing 12mm wide field of view at full hd resolution. Can get even closer than that if I use 1:1 sensor resolution.

Yes, but you need absurdly large lenses at wifi wavelengths (13cm vs

You can, but not with optical lenses. Light is much much short wavelength, hence the diffraction happens on much smaller scales than radio waves, so the lens material and properties really matters. Some plastics do it at microwave frequencies.

You can, just the lenses would be massive. Since 2.4GHz has about 12cm wavelength, a refraction lens would have to be hundreds of meters across to provide any kind of focusing power.

I seem to have read something about using a Fresnel lens for microwaves.... not the glass or plastic kind, but a flat wood surface with the right pattern of aluminum circles laid on.

OverUnity7734 hello

I believe it is 180/190, from his previous review video.

Can be pretty handy if you are repairing something that is still half in a case for example or on top of something big. You can leave the board in place and functional then to test.

Nicholas Heidl Also to get a side view to check if any pins are flying loose a few microns above the board (bad connections!). 300mm is about the width of many baseboards for instruments and computers.

What part exactly is responsible for the auto focus?

Check with Hayear on Ali express you can Message (New Feature i think ) them Direct Im in the progress of buying the Hayear 51mp Camera at the moment and they have been exceptional in giving me a list of items that will work with the lenses they do and also some others from the Aliexpress store. check the spec of your lens where you bought it from assuming it came with the camera / Microscope. for other uses see my post above in reply to BobC the one with the 2pair of reading glasses. :-)

@@andydickinson4018 i bought the 51mp and hace had it a while. Mounted from my ceiling pointed down on a camera tripod pointed at workbench. Held to ceiling via one eyebolt in joist and bungie cords. Out of way and ceiling has less vibration but mainly it decreases magnification to something usable. Connected to 44" tv. You can see puctures on my soundpack page. Im not happy the lens is so hard to get in perfect focus or that it doesnt have motorized focus control which it needs badly. Otherwise works as advertised. I use it to read my mail. Too blind now to solder. What else about it? It can connect to 720 and 600 monitors too. Also the 51mp is just about 6x times 1080p.. So you wont be taking 51mp picrs but what it does is give you up to a 5 or 6x digiral zoom. Kind of useful. I cant get usb to computer to work for me. The infrared remote is very useful but sometimes frustrating and you need to buy your own battery fir it if I remember.

@@andydickinson4018I bought a small stand and adapter ring for mine. Using only the Aliexpress stand the distance from lens to work area is about 2 inches which is way too high magnification. Using my setup the dustance now us about 2 feet from end of lens to work area. Much better. Just cant put your head between lens and what you are working on so I offset mine to the right and aim it to the edge of the table. For picts of my upside down tripod ceiling setup of my 51mp go to bottom of page in pics section and look for anything that looks like a big tv or blue solder mat. If you want close up picts of the clever ways I mounted things email me... contact email in info section on my channel... soundpack.air-war.org

@@andydickinson4018 Tripod is upside down, microscope is mounted inside out in small stand, then clamped with scrunchy hardware clamp to the hotshoe of the tripod. Adjustable (silver color) snake lights on stand also bent to point straight down at work area. I've since added a foamy white block to the front of it to increase visibility and offer head protection if I bump into it (not in pictures). I cover end of lens with a small buble wrap bag when not in use to keep dust off of it with rubber band. 1x zoom at 2ft: rotorbuilds.com/pictures/f_13906_kAKmCOSf0LLBm5mURgzIgNNB8.jpg rotorbuilds.com/pictures/f_13906_8dTLNYokhY2T6k0JAG4sqBslI.jpg 5xish (max) zoom at 2ft: rotorbuilds.com/pictures/f_13906_At5a0Aowr1K5nZZgxGL5hZbnV.jpg rotorbuilds.com/pictures/f_13906_IgtqYv51IJvyaDbKyxrtBgYOM.jpg I emailed Hayer about not getting USB connection working, they just said download the latest version of the software, which didn't help me :-/ You do have an SD card slot though you can record videos or pictures to, but kind of inconvenient, so much so I haven't used it. I'd much rather record video on my PC so I could port it right into my video editor, so maybe I'll play around with the software again soon to record a RC transmitter demo video. For me it's not very useful as a vision aid for the blind... I can read an amount due on a bill or a few sentences in junk mail to figure out if it's important or not, but I can forget trying to read a paragraph let alone book with this thing. I mean, it's doing it's job fine, my vision is just that far gone as it gets worse every single day. Today I friggin tried to write out a check and found, I had to do it 4 times because my writing was going way off the line as I couldn't see the line any more even with my face inches away.

@@choppergirl HI i seem to remrmber reading that to connect via usb make sure a memory card is not in the camera and also dont use the power supply just use usb power. This seems to work with mine which i got for a ridiculous price low that is. I am reading up on lens making so i can by some stock parts add them together with a Barlow lens and get aawsome lens i have also found an old security lens system that i will try tweak so i get at least a fine tune that is mortor driven. similar to what they have on computerised telecopes for tracking but a whole lot smaller. Then i just need to check open source for some code examples to follow. :-) Nice Heath robinson setup at your end good idea to mount from above.

Seems like an EDID problem to me, too. I'd slap an EEPROM or an arduino but what you suggested seem less sketchy.

I think he was using a std SLR camera mounted on the ceiling, like 1.5m working distance, and zooming down to the table.

The Killer Spud Like hand drilling 0.2mm vias in a prototype board?

But you get that FOV in big monitor so not really.

Except it’s seeing with a veedaoe camera.

try and get that working distance with a dslr & a macro lens. My 100mm macro has max magnification at like 6 " or something crazy, and it was 1000$+

@@beyonddeath123 You need macro tubes in between.

@@merlingallagher4484 Isn't macro tubes used to decrease working distance?

The tube tend to distort the more u have so glas and good glass is the best answer- have you ever seen the macro lenses video film makers use for natural history shots of insects? They get up to around 12-15 inches. And because they use apochromatic and coated lens systems there is a beautiful bright flat field.

You can get a great working distance with macro, but that means you have to use a long lens. Extension tubes reduce your working distance. I don't need a microscope very often, so I use my dslr with a 70-200mm lens, a close up lens and 2x and 1.4x teleconverters (barlow lenses). That gives me more than 300mm working distance, and at maximum magnification I get an amazing 12mm wide field of view at full hd resolution. Can get even closer than that if I use 1:1 sensor resolution. And the image quality is fantastic.

Flemming Jacobsen basically it’s a mild reducer or magnifier which when used in conjunction with its black tube may unflip the final image by 180° in circumstances when it’s impossible to flip a real object, of course with minimal loss of luminosity. In this case its only practical application is like putting a fixed-focus lens on an autofocus camera to shift its entire zoom power range around, which for a ‘reducing’ Barlow (fractional power) adds the benefit of increasing field of view, such that very little of its original autofocus capability will be lost even while increasing the distance from the object to the scope. Any added extremity or ordinary (non-Barlow) complexity often dramatically decreases depth of field and obviates setting any ‘back focus’ especially when the lens diameters are small, and large high-powered ‘objective’-lenses with short focal lengths are so expensive that when possible they are omitted in lieu of low powers in conjunction with an extra-long optical tube or if there is a cheap but standard lens that’s slightly overpower, a fractional Barlow added to compensate.