The Bokeh Effect: How Sensor Size Affects Background Blur
Of all the things that photographers argue about in our secret monthly meetings, sensor size and its impact on our work is perhaps one of the most heated topics that can come up. From the true “bigger is better” snobs (“Sensors? Bah! 8X10 film is where it’s at!”) to the ones who prize portability above all (“Micro-Four-Thirds rules!”), the debate between advocates of MFT, APS-C, and full-frame sensors often reaches religious fervor.
Contentious topics related to sensor size include resolution, high-ISO performance, and dynamic range, but the quality and characteristic of bokeh, or out-of-focus backgrounds, is perhaps the most fiercely contentious. While there’s no contest that the bigger sensors can clearly produce much smoother and, well, blurier (not a word, I know), it’s also an unfair statement that the smaller sensors like the ones in Olympus and Panasonic Micro-Four-Thirds cameras can’t produce good bokeh. (more…)