I agree, static scenes tend to be not as exciting as movement, i was making a comparison based on using a HDSLR only, in a perfect world we may use different cameras for different shots to compensate pros and cons .the talk and walk has been used extensively, I think if you could affort a decent dedicated focus puller, you might as well be able to rent a RED one. you would use a smaller aperture with a larger depth of field IF you you wanted movement while shooting on a HDSLR. I am just saying if you must use a HDSLR dont drool over using Panavison or Cookes or Zeiss CPs, a still lens will do the job, is easier to get, wont break your budget and u dont have to worry about compatibility issues
bdw it think low budget might be to vague, how about $4000 for a 15 minutes short