![]() The T490B, however, has simultaneous viewing and parfocal trinocular port so that these 'switch' and 're-focusing' are no longer necessary. Because their trinocular port is not designed to be par-focal with the microscope optical system, you have to conduct re-focusing after each 'switch'. ![]() Traditional microscopes on the market allow you to see through either the trinocular port or eyepieces, forcing you to switch between the port and eyepieces. This is a professional trinocular microscope with 10.7 MP (3856x2764) pixel digital camera, boasting three unique features no other microscope dealer on eBay can claim! Different from most other microscopes on the market, the T490B is remarkable because it features 1) simultaneous viewing through the photo port and eyepieces, 2) an adjustable parfocal trinocular port, and 3) a detachable C-Mount located on the 23mm photo port.The T490B's adjustable trinocular port creates a parfocal optical system by allowing the image system attached to the photo port and the image in the eyepieces to be in focus at the same time. ![]()
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