It depends on the depiction of Burger King in your short film. If its logo happens to be in the background on say like a billboard, but the characters make no mention of it, then you should be golden. However if you are openly talking about Burger King in your movie and its in any way negative, you run the risk of getting a lovely letter from the BK legal department.
Maybe if it dropped down to under 1000 and I might consider getting it..
An AF200, perhaps?
Of course! Just let me borrow your wallet...
With 4K recording becoming the norm in most low end camera systems such as the GH4, A7S/R, and NX1, and those being more affordable to indie filmmakers than higher cinema cameras, its pretty much a wash.
PRE PROD TIP-Establishing a base choreography is key, so if you can schedule a rehearsal or two prior to shooting is helpful. Oh, here something I do with all my action based work. Shoot the fight twice. I mean that I will shoot the rehearsals as if it were going to be in the final movie. This helps figuring out the best angles for the action. I take all the footage and edit, again as if it were going to make it into the final project. Once you have that, upload it to a tablet or phone, even on Youtube as a unlisted link and on the ACTUAL day, all that needs to be done is to recreate the angles and moves you have in that video. Its an incredible time saver and then you only shoot what you already have worked out and know is the best.
PROD TIP- For talent, having some kind of athletic ability is better than none. All hits only have to look good on camera, so swings have to wider, reactions have to be bigger but most importantly, it all has to be moving slightly SLOWER. Tell them to move just a little slower, cuz you can always add speed in post. It also is help with keeping everyone safe from accidents. Accidents will happen, but as long as everyone remains professional (and apologizes) its all good.
POST TIP- When in the edit, say you have a shot that the angle is good and the acting is good, but the hit or hits just lack that particular sting or snapping look to them. To fix that, take a clip with the hit and cut out the frame before the impact. To clarify, if a punch starts on frame 1 and connects on frame 6, cut out frame 5. It really makes a world of difference and has in fact saved a few shots for me in the past. Get yourself a decent fight pack, the guys from FILM RIOT have a good one, but there is a dude on youtube name tony jaa who makes his own that are really cheap and sound amazing, he resounds a lot of fight scenes to demonstrate the quality of his work. Do a search for fight resound, it should pop up.