What is the difference between sCMOS and CMOS?
I found this link here for the fine details.


  
    Scientific CMOS (sCMOS)
  
  
  Unlike previous generations of CMOS and CCD-based sensors, sCMOS is
  uniquely capable of simultaneously offering:
  
  Extremely low noise Rapid frame rates Wide dynamic
  range High quantum efficiency (QE) High resolution
  Large field of view
  
  Performance highlights of the first sCMOS technology sensor include: Sensor format: 5.5 megapixels (2560(h) x 2160(v))
  Read noise: &lt; 2 e- rms @ 30 frames/s; &lt; 3 e- rms @ 100 frames/s
  Maximum frame rate: 100 frames/s Pixel size: 6.5 μm
  Dynamic range: > 16,000:1 (@ 30 frames/s) QEmax: 60% (with
  excellent red/NIR response)



For more information than is practical to copy or write use the link provided. The benefits are listed above, and the high cost is obvious. It is the new kid on the block so mass consumption has not yet driven prices down. As the name implies, for the time being mostly scientist will be using this sCMOS sensor. Camera manufactures will have it in their best high-end cameras. They are worth the cost if you have the budget for them. Give it ten years and the cost will be much lower.