We are also considering installing security cameras both outside the building and in the common areas. 

When investing in these areas, screen tenants vigorously, have cameras and call the police and cite trespassing when the druggies come on your property.

We are also considering installing security cameras both outside the building and in the common areas.

(CHAP, MD Historical Trust, etc)Sound proofingLandlording 101 for the student and young professional marketFiguring out what kind of Home Sense insurance coverage I needTenant proofing units, but also making them attractive and differentiated on a reasonable budgetFiguring out the right degree of home automation (wiring/full unit audio etc) my owner's unit , public/outward facing cameras, electronic locks etc (Consulting firm?

If parking area is a problem paint lines.Security cameras are an option if you have complaints of say package theft. 

I won't go into all the other issues with her, but because of the trouble we recently installed security camera's which seemed to only piss her off more. 

At that small of a unit count, my guess is there isn't adequate security (fence/gate/cameras) etc. 

Is there a good standard wide lense camera that I can buy to help me with this?

They invest in a quality camera and not try and take pictures on a cell phone.

Property = good basis, great upside on the spacious townhouse style with under market rents@Grant Rothenburger - over 100 unit renovations (kitchen, flooring, bathroom updating), roofs, tree removal, landscaping, water direction with new flumes, redo main water service from galvanized to PVC, cameras, lighting