leslie zigler and shawn mcdonald. >>> what's the essence of an image?t's the question artist jim campbell explores in his work. this weekend, campbell's electronic creations will be featured in a new exhibit at the san jose institute of contemporary art. we put together this preview. >> so these are waterproof pixels that we're testing. >> i'm jim campbell and i work with light in the field of electronic art. >> i was an engineer in silicon valley for close to 25 years. we made converters from low-resolution tv to high-definition tv. one of the things i was interested in early on andr continue to be, is if you take away all of the details of an image, is there anything useful from an experience of looking at something that's low-resolution, is there some sort of essence that can be found in taking an image and getting rid of most of the information and just leaving a little bit there. my day job was high-definition tv and my artwork went the other way. >> a lot of the stuff that i do does start out as an experiment. perceptual experiment. these are home