Anyone getting started out in DSLR video production can tell you that one of the biggest frustrations for them is changing focus during a shot. This is where FocusMaker comes in. It attaches to any lens and in just a few minutes you can have focus points marked on the big ruler, and easily jump back and forth from focus point to focus point.
I have seen other options for this before, but this is the most clear cut and to the point option I have seen for anyone just starting out. With a little bit of time setting up your shot it can be a very effective tool for any DSLR filmmaker thanks to it's big sight and ruler. So how much is this handy tool? It can be had for US$90 via their website. I'm not sure if I would drop $90 on this, but given the functionality of it, it is definitely an option to consider for the low budget filmmaker.
Check out the FocusMaker website here.