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It's certainly not a professional-quality microscope, but it's not intended to be. It's a toy and a pretty good one. It's small, light, and will fit a child's hand well, and is simple to use. It comes with a mini SD card installed, a USB C cord for charging and connecting to a computer, and several microscopic slides containing such things as dandelion fuzz and goldfish scales.

It has built-in LED lights to light up whatever you're looking at and the brightness level is adjustable. Magnification is 100X to 1000X and there is a conveniently located focus wheel. It even functions as a camera and a telescope, which is fun.

The viewing screen flips out from the side. The screen is tiny, but, with a little fiddling with the focus wheel, the image is relatively clear. Images can be saved as either photos or videos or watched live on the screen or on a computer screen when attached via the USB cord.

The unit is plastic, and although it seems sturdy enough I doubt if it would survive a drop onto a hard surface. There is a hand strap on the side to help prevent drops and steady the unit.

Overall, it's a good child's toy with some cool features and most kids interested in studying the natural world should be fascinated with it.

The only test I have available to evaluate a polarizer is to use the polarized light from a current generation LCD monitor along with some non-polarized light to see what the filter eliminates. The setup behind the two images that are part of this review is simple. I placed a DSLR on a tripod in front of a set that included mostly polarized light from a monitor as well as some non-polarized light from an accent light placed to the side. I kept the ISO, aperture and shutter speed constant. In one image I had the K&F circular polarizer set to minimum and the other snap is set to maximum. I also added a histogram of both images to the right of where the computer monitor is in both images. The filter did a good job of filtering out most of the light from the monitor, indicating that polarized light is being filtered. Although my test setup is not a lab and I expect that a real lab like DxO would smile at my test, it is valid in the sense that I have had both good and bad results with it. I also used this setup to test the UV filter included in this kit and didn't notice any change. I haven't posted any images because if there are small differences they wouldn't be visible in a JPEG posted on the web. I rate these two filters very highly. I couldn't see any color cast from either.

If you think you might need this, yes, you do. The inkbirdplus co2 monitor saved me from adding supplemental co2 to my garden, when I never needed it in the first place. I was afraid that I wasn't getting enough co2 and after operating this, I found out that I was having an almost toxic build up of co2. I was wondering why I would feel ill when working in there. Now I know. It's a great unit, with a pretty good track record. Is it the MOST accurate unit you can buy? No. Is it reasonably accurate? Yes. If you think you need one, you do. Just remember to keep the back light turned off (which is easy with the press of a button) if you don't want it to disrupt your light cycle. It powers and charges via usb cable but don't expect the battery to last more than a day or so unless you leave it plugged in. Just remember to turn the little light off when you're done taking you readings. Enjoy!

I was sceptical that this would work.
However, I have a multiple monitor setup on my laptop which is located in such a position that video calls suffer from backlighting coming from a window opposite. This often meant that the video was in silhouette.
The simple addition of this light has totally transformed the image.

The kit comes with two mounting options - a clip that fits nicely onto the frame of a laptop screen and a more traditional little tripod.
That makes the light useful for other scenarios too - although I doubt I'll ever use it for anything else.

Overall, this was a great purchase for my particular use case.

Got this Webcam light to remove the shadows from my face when working on Zoom or Teams. I have to say that it does a remarkable job of it.
There are 3 setting to control the colour mode and a great range of brightness to ensure the right amount of light for any task. It comes with a tripod for free standing and a nifty clip to hold the light on the laptop screen just above the camera without masking it.
Unfortunately as good as the light is, it cannot be mounted on a free standing monitor as the clip has not the depth to accommodate this and I think it could be a deal breaker.
Please note manufacturer, you need a monitor mount too.
I like this light as I now look like a Pro, just need some make up to hide the wrinkles.

I like the selfie ring light, only issue max brightness is not that bright but it is good.Also, the buttons to control the light need to be closer to base rather than hanging in the middle of power cable.

When you open the incoming package, you will find that the packaging is very high quality. The brand is very careful in presenting their products and the materials are of high quality. The filter holder and adapter ring are metal and the filter holder has a spongy area whose function is to seal with the filter without letting light through. Once the filter holder is attached, it is easy to move. crtsal 100x100 quality is very good, with highly polished edges. The filter holder has two slots for square filters, but the advantage is that the ring screwed on the lens can be screwed with another round filter, for example a polarizing filter. I think the picture is very good. As with the brand's round filter, the sharpness is not lost, the color cast did not catch my eye, anything that can be edited during development is appreciated. The ND1000 filter included in the kit enables long exposures in strong light. The sample photos are photos taken on a cloudy afternoon with and without a filter. Those with filters were made with an exposure time of 20 seconds.