Came across a discussion on Photography sub-Reddit (http://www.reddit.com/r/photography). The person posting the question wanted to know why a mobile phone is able to capture higher FPS as compared to a DSLR.
The answers sound convincing. Larger sensors mean more information to be processed in the same amount of time. While adding faster processors can be a solution, it also means more heat in the camera. It looks like fps vs sensor size is a trade-off.
- Why is it my phone can take 240fps 720p and DSLRs lag so far behind? – https://www.reddit.com/r/photography/comments/4cngoe/why_is_it_my_phone_can_take_240fps_720p_and_dslrs/
The FPS rate of the Canon at 5fps was an initial disappointment for me. Now, looking at this explanation, I am OK with the provided rate, as I am getting better quality images as compared to my older 4 mega-pixel Kodak DX6490.