These caught my eye the other day, while browsing
4.5" outdoor PTZ with IR.
http://s.click.aliexpress.com/e/bYkhEM1a
6" outdoor PTZ with IR.
http://s.click.aliexpress.com/e/cnMwHCO4
Of course there is no info, review, compatibility (3rd party software, NAS, NVR, ...) to be found anywhere...