The reason we use All Sky networks like the Southern Ontario Meteor Network (SOMN), is to detect many cm-sized and larger meteoroids ablating in the atmosphere. The smaller, centimeter-sized meteoroids, a size range generally not recorded by all-sky photographic cameras. Meteoroids in this size regime are a major mass-loss mechanism for comets, and as such meteor showers tend to be most detectable at such sizes, making statistical studies possible.
In particular, meteoroids in this range are bright enough to be amenable to multi-instrument observations. This means that many events can be recorded in detail to provide constraints for numerical entry models. It is this latter application which was the main design driver for the development of an all-sky camera network as part of the multi-instrumental Southern Ontario Meteor Network (SOMN).
By gaining this we get a better understanding of orbital dynamics, meteor entry modeling, and statistical information regarding the distribution and frequency of meteor events. Ultimately this allows for a better understanding of the impact process and the treat fireball event have to cities on Earth. The common example is the Chelyabinsk event in Russia that caused extensive damage to the city. A video of the event (taken from YouTube) can be seen below.