Whereas I defer to your knowledge on this subject, when I put the figures through the IPVM using your target of 100pf, I found that with a 2mp camera to achieve 100pf at 30 ft, the max lens angle could be 35 degrees (using a 7.5mm lens). Whilst it achieves the pf target, it is a narrow angle of view so I'm presuming you have in mind having this plus a wide angle. The reason I suggested a PTZ + wide angle was because it has subject tracking so can zoom from wide angle to zoom for close up identification when a target is detected, whereas with a fixed 35 degree view, someone could easily be out of the side of the fixed focused view at 30 feet. I'm happy to be corrected though as I'm far from an expert.