It has been a while since zoom lens controller v1 was discontinued. The reason was very simple and happens to the best of us – the manufacturer made critical part outdated. Half a year ago swept all available stock and manufactured the last batch. An updated version was in development, but only internal use sample […]
Read MoreLogitech Brio 4K webcam rework instructions
Recently Logitech released it’s newest camera BRIO 4K (8.8 Megapixels, wide dynamic range, great white balance, up to 90fps, USB3.0). Just like previous models it has fixed angle lens, which in some cases it is not enough. This is where custom housing for exchangeable C and CS-mount lenses comes in handy. And there are vast […]
Read MoreMeasuring minimal and maximal microscope magnification and zoom ratio
Magnification ratio is one of many parameters to describe optical instrument – microscope in this case. Magnification ratio usually comes along with zoom range. These terms are often being misused. In this post I will measure zoom range and magnification ratio of monocular video microscope lens and stereo inspection microscope (Konus #5424) head. Despite being […]
Read MoreLong range license plate recognition
Automatic license/number plate recognition (ALPR / ANPR) is a specialized kind of optical character (OCR). Target applications might include automatic car parking control, electronic toll collection, neighborhood watch, vehicle tracking and such. Concerns about these systems have centered on privacy fears of government tracking citizens’ movements. Critics have described it as a form of mass […]
Read MoreAny CS-mount camera deserves autofocus!
I have been working on open-sourced motorized zoom lens for a while. Probably there is no need to mention benefits of having motorized zoom/focus lens on a regular CS type camera. Even greater value comes by having auto-focus capability. This feature is being calculated on host computer and does not consume lot of resources. Many […]
Read MoreEngineering samples of motorized zoom lens controller
Today finally assembled few zoom lens controllers to be evaluated by early testers. Had to build test jig to flash bootloader. Boards will be shipped with latest firmware loaded. But new features are being developed and you should update with recent firmware before use. Therefore any feedback is highly appreciated. While forum on kurokesu web […]
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