fixed lens would always bring in more light comparing to adjustable focus. you cannot escape the physics.
that's also why professional still photographers would only use fix lens for their camera. adjustable focus = more optic = less light.
still, adjustable focus is more convenient, flexible and better for finding the exact field of view in a given mounting location.
If I understand correct, the first round was relatively small and next week Andy would have STOCK for everyone.
soon enough (could even be next week), would be a review ready for the new HDW5442T-ZE
While you are not wrong, it is worth noting that the primary benefit of a prime (fixed focal length) lens in Photography is to obtain a shallow depth of field for that trendy bokeh effect. But yes allows more light in for lower light, and also weigh less.
With the CCTV cams this is absolutely not what you want as you want a large depth of field, although I feel some of my 4K cams could do with blokeh effect for posting mug shots on facebook.
Unlike prime photography lenses , all my fixed focal length CCTV cameras don't have focus control (focal depth). All my vari focal length cameras also have additional focus control (focal depth), this is in addition to adjusting the focal length. For myself this myself makes a lot of difference and ensures sharp images as I can avoid the cam focusing on a tree or something stupid.
Disclaimer: Can't say this is the case for all the fixed focal length CCTV cams, just the ones I have used. Worth noting that focal length and focal distance (focus) are not the same thing.