These fine Dahua wiz-bang marketers are starting to make this sensor size chart not mean so much with all of these new cameras, right?
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Yeah... we are all craving for more 1/1.2 or larger sensor size cameras but most of the security camera companies keep churning out the 1/2.8 sensor size cameras instead, maybe because 1/1.2 sensor is much more expensive and less profit margin for them that is not worth it to made? And an average consumer don't really know much about sensor size.....
But if you look at some of the current physical size of the 1/1.2 sensor cameras like 4K-T, and Ubiquiti's G6 Pro with 2.36 optical zoom and IR I saw on another thread linked by bp2008, they are not that
Yeah... we are all craving for more 1/1.2 or larger sensor size cameras but most of the security camera companies keep churning out the 1/2.8 sensor size cameras instead, maybe because 1/1.2 sensor is much more expensive and less profit margin for them that is not worth it to made? And an average consumer don't really know much about sensor size.....
Our perceptions differ. I consider the 4k-x to be gigantic compared to the 1/1.8 sensor bullets. The 4k-T isn't available with a 6mm lens probably because it wouldn't fit in the case, while the larger 4k-x was available in a 6mm version. The cameras with a 1/2.8 sensor use an M12 lens, 1/1.8 sensors us an M16 lens, and the 1/1.2 sensor lenses are M22. It wouldn't surprise me if the delta cost of the lens was greater than that of the sensor. More raw material for the bigger case does add something. When I worked in an organization that made add-in products for PCs, the rule-of-thumb was that whatever the increase in manufacturing cost was, the retail price increased by 10x that value. The bean counters almost always won over the engineers when deciding the features that impacted manufacturing cost. One case that I really resented was that we couldn't include a lousy single diagnostic LED on a plug-in board because of the cost.
I can say from experience that they don't even work well with a 1/30 shutter speed with two streetlights in the vicinity. I had to run mine at 1/25 and 70 gain to get a reasonably okay picture.
I don't have any 4K cameras, I am speaking from what I am seeing with other people. My setup is all 4MP cameras except for a 5MP Reolink doorbell + 1 IMOU camera that's also 5MP - its part of a bunch of IMOUs that I got temporarily as I needed wifi cams at the beginning. I mean I strongly agree with you that the quality is not sufficient, but for most people - it is. Especially as in most use cases they have enough light, and the cameras aren't even installed properly - like a camera set up at 20+ feet high to overview the yard - you just won't know it's useless until you actually need the footage for something specific. For me a 4K camera is useful only for a brightly lit area where you need high detail, like a doorway, garage entrance, etc. but I don't have such use case in my situation.
Looks good, doesn't it?That seems like a reasonable image
I have many dissembled 1/1.2" lens from Hikvision, from the so called 2.8mm to 6mm, they use even bigger M27 lens. Actually the lens size of different focal length is the same, I can just replace them with one of different focal length. The camera housing size is also the same with the those with 1/2.8" sensor
Algorithm can never beat physic. When Hikvision and Dahua change sensor size from 1/1.2" to 1/1.8" in their newest ColorVu and Color-4K series, some people says it's great upgrade, while I consider it as just a cost-down downgrade, It's not a technical choice, but just a market decision, it's never meant to make better video, but just to make more profit
