a Circle Game

Hanks & Belliston's how-to on freehand perspective, Rapid Viz, gets sketchers right into the swing of non-source, freehanded rectilinear objects, macro and micro. For the built environment, it's What The People Want. One oversimpification they made --and it's hard to delete from students' learning-- is their representation of our field of view as one circle. That's only true for cyclopses! The boiled-down geometry of perspective provides a round-edged image such as a pinhole camera print, based on ONE unmoving eye--not two moving cameras with adjustable focus, which is what our two eyes are always streaming. For some reason we like our pictures with straight sides, so cropping a perspective construction is the next step, a move unconnected to linear perspective, but crucial to clear communication.