To the community : What do you think about this video explaining sensor size differences? http://www.slrlounge.com/multiply-aperture-crop-factor-comparing-lenses This video recently has been around some major photography websites (looks like the guy is advertising is business and trying to sell his crappy e-Books). The video is trying to explain and compare different sensors and results from it (35mm vs APC-s vs 43) Although it has all the correct "math" the reviewer seems to me extremely bias has he continuously refers to bokeh as "image quality" ?????. I'm a Canon 5D M2 shooter has well as a Olympus e-M5 and Sony Nex 6N and this video is crap by comparing it from my own personal experience by far as 2 years now. He doesn't take into account "lens quality", sensor technology, jpeg vs raw, image stabilization, etc. I think this kind of video publicity in such major sites is dangerous because it makes amateur consumers lean towards bigger sensors by stating bluntly that bigger is always better regardless of what sensor it is and what you put in front of it just by saying bokeh = quality. I think AbelCine explanation of crop sensors (http://blog.abelcine.com/2010/05/14/a-lens-is-a-lens-is-a-lens/) is a much better one, and a "live one" - not using side by side pictures that had clearly different light setups, models with different expressions, etc. If you feel like me and that this video is biases please reply on those sites (and give you opinio here to) as i think this makes a bad impression on people new to photography and looking for an advance camera. Best regards. p.s - sorry for the bad english, it's not my native tongue.