Optical performance comparison SD49225T-HN vs SD59225U-HNI

Dave Lonsdale

Pulling my weight
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Has anyone been able to compare these two PTZs? Clearly the 49225 hardware will be less capable, for example the 49225 doesn't support 1080p in stream 2, but I use BI and don't need autotracking etc. The key parameter for me that appears to be different is the S/N ratio - 50dB for the 49225 and 55dB for the 59225. (Other starlights also have a 50dB S/N). Would I see a difference - for example, more smeared motion when its dark?

Aslo, the early 59225 specs state the 'Exmor R' image sensor but both now state 'STARVIS' which I believe is a slightly better Exmor R, perhaps even selected out of the same production line. So, was the STARVIS sensor introduced after a build date?
 
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