IFWATER USB Camera 4K Ultra HD 5-50mm Zoom Manual Lens USB Web Camera,2160P USB Camera with IMX317 Sensor,10X Varifocus Camera Close-up USB Webcam Supports for Window/Linux/Raspberry Pi

I bought a few of these (and a few with shorter lenses) for streaming purposes and I am really impressed. I wish I had seen these months ago when I set up a streaming system in a different location. Great quality, great picture, great price. Would definitely recommend.

I like the mechanical concept of this camera, but the effective resolution is NOT "4K Ultra HD" (3840×2160 pixels), as it was specified, but only 1920×1080. The sensor chip IMX317 has only about 2M pixels, not 8M. The rest was faked (just to support 4K mode), representing one pixel as 2×2 pixels on the screen. However, this is a common practice among camera manufacturers - they have the 4K mode, but the pixel configuration is fake.The lens is a pure junk! I had to buy another lens to get a good picture, without an awful vignetting (totally dark corners). I recommend the Arducam 8-50mm lens, but NOT the Arducam 2.8-12mm, which is a junk too! So if you need a good 2.8-12 mm zoom lens, try another brand.

This camera is clearly an adaptation of a microscope camera to be used as a web camera.PROS: Good image quality and color rendition. It is also well built. Easy Plug 'n play. It can not get any simpler than that.CONS: Vignetting is like I've never seen before. Just no image on the corners. It is present at all focal lengths. Too much to bear. I tried to hold on to this camera, but people on the other end of my video calls are noticing it and commenting about it. I'll have to return.

I purchased 2 of these cameras to upgrade to 4K for my Facebook videos.I have the cameras mounted upside down on the bottom of the book shelf over my desk. With OBS software I am able to turn the images 180 degrees so the picture is right side up. These cameras are very well matched. In my setup software I can apply the same settings to both cameras and they match. My previous cheap webcams didn't even come close to matching.The only negative I have is the manual focus of a bit touchy. It is hard to get the correct focus at arms length. By closing down the aperture I am able to increase the depth of field to get an acceptable focus. Auto focus would be a nice upgrade.I totally recommend these cameras.

Do you remember cell phones in the 90's? The flip phone with a webcam on a 320px tall screen? Yup, that's what this camera can do. This costs more than the C920 ( which produces an EXCELLENT picture at 1080p ), but produces the equivalent of that flip phone camera.Color accuracy: harsh, sudden and random changes to white balance depending on what comes into frame - for example I pulled up a cup of coffee which is brick colored and for the rest of that session the camera grabbed a yellow-reddish tint and didn't let go of it. Every time I turn it on it's a different tint although the environment lighting stays consistent.Picture quality: very, very bad. Image tearing happens at any resolution above 640x480px - like I said, this is a 90's flip phone sensor. It's also very laggy - feels like 10fps to me at 1080p and above. Running in 720p, if you bump your desk with your elbow or something the image becomes jello on a live call. You can also see vignetting in the corners unless the zoom level is just right.Backlight compensation: non-existent. In fact, in broad daylight, with the blinds open in sunny Florida, this camera darkened the image SO HARD that you could not tell if it was on or not.Manual focus: works great, though a tad bit sensitive.Manual zoom: great, smooth enough.Tripod mount: perfect.Privacy: comes with a lens cap.