1000 x Magnification for less than ?20

Has anyone mucked around with one of these , I want to try one on my phone and on the PC, wondering what the image quality is like, the reviews are great but as photographers we are more picky about IQ than most other people. Wonder if it would be good for checking sensor cleaning as well as mucking around with other stuff.

I've used a couple... the quality may look "OK" in web images on Amazon's reviews, but that's because they are at a tiny 400x300 resolution. Many of these have a CMOS sensor with a 640x480 resolution, and even those listed on Amazon with a "2mp" resolution are simply interpolated from a 640x480 original sensor image. So if you're expecting quality, you'll be very disappointed. They are however, reasonable for looking at something close up, at a glance, and live on your computer, so you can diagnose a circuit board, etc.

Thanks I actually bought one which arrived on Friday, it's impressive for the price of 14 quid and it's paid for itself by allowing me to fix a couple of tiny, fiddly things that I couldn't see properly. AmCap reports it as 640 x 480. It's also well made and the controls are very good. Even the stand is half-decent.
Being able to connect it to the phone works well but is not as useful as I first thought. I'd imagined it would allow me to see things behind radiators and under floorboards etc, find lost household treasure, like pound coins etc
It sort of can but obviously magnified a hell of a lot.
It's one of these I need. There's a massive price variation £5 - £500
As well pro and amateur the market seems to be split into two further camps, Wi-Fi versus USB - I do wonder if the convenience of the self-contained Wi-Fi models is a false convenience of ropey connections and batteries that need recharging. Favourite is this , anyone got any experience?
Being able to connect it to the phone works well but is not as useful as I first thought. I'd imagined it would allow me to see things behind radiators and under floorboards etc, find lost household treasure, like pound coins etc

It's one of these I need. There's a massive price variation £5 - £500

As well pro and amateur the market seems to be split into two further camps, Wi-Fi versus USB - I do wonder if the convenience of the self-contained Wi-Fi models is a false convenience of ropey connections and batteries that need recharging. Favourite is this , anyone got any experience?

Quote:is not as useful as I first thought. I'd imagined it would allow me to see things behind radiators and under floorboards etc, find lost household treasure, like pound coins etc

How the 1,000x magnification is calculated is not specified - but implies a subject 3mm wide.
Is this about right?
I presume there is no magnification zoom between perhaps 20x and 1000x.
However the magnification is determined, it usefulness depends on an individuals needs.