Here's a quick guide to remembering your basic image sensor size comparisons. This is not scientific, it uses round numbers and doesn't take into account variables like active pixel areas, aspect ratios, etc. Still, this is the kind of knowledge that is worth having stored away in your brain.

Quick Sensor Size Recap, Universal Measurement | News from the NW Digital Cinema Dealer (http://provideoandtape.com/blog/?p=1106)

epetrie@provideoandtape.com

Thanks Eric. A short but interesting read. Nothing new there, but it's nice to see it summarised well in one place.

Actually…His measurements of super35, APS-C and Full Frame are way…way off. Here's some quick math, excuse if I'm off a few hundredths...

Full Frame is 1.7"
Super 35 is 1.13"
APS-C is 1.09"

Barry

I apologize for this originally being posted inaccurately. I have a conversion calculator so i put in full frame and worked my way backwards to the smaller sizes. For some reason though i put in full frame at 2.5". You're spot on, full frame should be about 1.7. Once i started there my conversions worked out. The full blog post has been updated accordingly. I also added a link to a neat, although visually rough, reference site.

Sensor, Image size and depth of field comparison between Film and video formats (http://www.filmcentre.co.uk/image.html)

Thanks.

epetrie@provideoandtape.com