Yesterday right before I had to ship my 5DIII back to Lensrentals I decided to try and shoot some comparison shots between two cameras I rarely see compared: the 5dIII and the Rebel t3i. It was quick, imperfect, and a little ghetto, but I think it shows relatively well the instances where most people won't notice a different, and the instances where you can't miss the differences.

Canon 5DmkIII vs Rebel T3i/600D on Vimeo

Evan that was a useful exercise in my books. Thank for your efforts.

Having split screen side by side will be a more effective comparison. anyway, I love the font that you use. What's the name of that font? :)

I found it useful, thanks.

Thanks guys! As I recall it was this font: KG Call Me Maybe Font | dafont.com (http://www.dafont.com/kg-call-me-maybe.font)

Evan. thanks for sharing the link. Just downloaded the font. The title of the font is cute too :)

The low light performance to me is where the "rubber meets the road". The whole reason I bought the 5DM3. Most other attributes aren't nearly as obvious unless you are doing a comparison test side by side.
Thanks for the test!

John,

I agree 100%.