More sample in the photographic field of view. You can see the advantage of using a "full frame 35" camera sensor (43mm diagonal).
The popular consumer camera sensor now is called APS-C. We enjoy using our RRR efforts to adapt old 35mm film microscope attachments for use with modern large format digital cameras.
the same diagonal as found on a frame of 35mm film! This is not coincidental. These are found in most consumer DSLR/MILC cameras and Nikon has special cameras with large format sensors that have diagonals up to 43mm. Now we are seeing cameras with "large format" CMOS sensors. If you use an older camera with a 16:9 format displayer you will have a distorted (stretched) image and a "letter box" display with top and bottom portions blocked out. We have also seen the aspect ratio of monitors go from 4:3 (most CRTs and early flatscreen) to the present 16:9 format. This number is useful when selecting the correct coupler in that a 1/2" sensor camera will normally call for a 0.5x coupler and a 2/3" sensor will call for a coupler with optical magnification of 0.66x-0.7x. Keep in mind that the camera sensor specification of 1/2" or 2/3" is pretty meaningless. This dimension will range from 4mm (1/4") to 16mm (1"). The critical item for selecting the correct coupler is the actual dimension of the sensor diagonal (mm). New manualWSI-SC version of Microvisioneer permits use of any global shutter CMOS camera with 10fps or faster operation at highest resolution. much faster than old USB2, Firewire or old frame grabber boards. Global shutters prevent image distortion when you are moving your sample for the stitching process Cameras now connect to your computer via USB3. Some cameras will have "rolling" shutters and some will have "global" shutters. Many top performing cameras have Sony sensors (such as the latest Pregius CMOS). The CCD has nearly disappeared and most cameras today will use CMOS technology. Such c-mount couplers are designed for CCD or CMOS sensor cameras with nominal size ranging from 1/4 inch to 1 inch.
These range in magnification from 2x to 0.33x. Most microscopists are aware of the c-mount coupler. Although we are now pretty much all-digital, one key item has remain unchanged. Over the years we have seen the transition of analog VGA/S-VHS cameras viewed on a CRT to high performance sCOMS ("Scientific") sensor digital cameras viewed on beautiful flatscreen 4K high resolution displayers.
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