New Camera Requirements

[Sybaris]

I have a couple fixed focal length 2MP Hikvision IP cameras hooked up to an NVR that have worked quite well for the past 4 years......... even caught a burglar once. I am now in need of a new camera that I need to do more than keep watch on an area, I need an outdoor PTZ that would let me zoom in on a Coke can at 100 feet and be able to clearly read "Coke" on the side of it.

I've looked through all the Hikvision cameras and have no idea if it should be varifocal or optical zoom or how many MP or whatever to meet my requirements.

Any suggestions much appreciated.

thanks