A Battle Without A Real Winner

No need to shudder this is a battle without a real winner. The ideal shutter truly comes down to 2 things, necessity and budget. Of course, you can read a thousand reviews and buy the most expensive equipment possible. The artistry of the industry, however, is, of course, subjective—regardless of your preference when it comes to your shutter most of the time no one knows the difference, but there are some nuances to the global and rolling shutter types.

Rolling Shutters:

Rolling shutter technology, which can operate mechanically or electronically, is the type of shutter typically used for DSLR cameras, in addition to still cameras and phone cameras. These work for everyday use, but of course have their limitations.

The rolling shutter mechanism is synonymous with using CMOS sensor scans to develop scenes vertically or horizontally. This can be problematic since the image is not captured at once, and may cause distortions depending on the direction of the shutter.

The rolling shutter depending on its readout speed can result in imaging artifacts when attempting to capture robust motion, as in fast PTZ or the scene of a speeding vehicle.

If you were planning to utilize a rolling shutter to capture an image it would be pertinent to get the camera with the highest readout speed to result in less imaging artifacts.

The imaging artifacts typically appear from objects of speed in the frame but have also been known to respond to exposure. You won’t get these results from stationary stills proving rolling shutters are still very useful for some aspects of industry.

Like in the case of our:

uEye UI-1460C USB2.0 Color CMOS Cameras Global or Rolling Shutter for Machine Vision and Medical Applications

Available on our website, this camera has a C-mount lens,  ½” CMOS image sensor, 8bit color depth and a 10 fps frame rate.

Some of the rolling shutter benefits are that it is more cost-effective, it generates less heat will have less noise and a wider range.

Global Shutters:

Global shutter systems have progressed as the industry norm. The use of CCD sensors has are ideal for forensic, medical, and industry that requires detailed high-resolution images. Most global shutter cameras operate utilizing a CCD sensor, but it isn’t unheard of for CMOS to still be used in some cases. Which is good a lead-in to introduce the Hikvision MV-CA050-20UM/C:

MV-CA050-20UM/UC 5.0 MP 1" CMOS USB 3.0 Camera

This camera has a 1" CMOS (Python 1300), 2592 x 2048 Resolution, Global shutter; auto-exposure, manual exposure, one-key exposure and runs on USB 3.0.

With the MC-CA050-20UMC, Hikvision adopts a global shutter with a CMOS image sensor for camera modules. This structure of sensor outputs images free of imaging artifacts for quick motion and is utilized in FA/machine vision cameras.

The benefit of the global shutter that separates it from the rolling shutter is that opposed to the vertical or horizontal scan, a global shutter captures all parts of the scene in one instant. Simultaneously capturing the image alleviates all possibility of motion artifacts.

Knowing more about your shutter readings can assist your Machine Vision systems to produce the most optimized performance.

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