So I bought my OM-D as a light travel alternative to my hefty 5D Mark II...I finally got both of them out for a quick comparison...both shot at 18mm equivalent, 1/1000s, f5, ISO 200, auto focus, auto WB, JPEG, straight off the card. Here are some 100% crops...I have to say I'm incredibly impressed with the Olympus, especially considering this combo is a fraction of the size, a third of the weight and (new price vs. new price) about half the cost:
TV300262 by canonzenit, on Flickr
100% crops...Oly on the left, Canon on the right:
IMAGE LINK: http://www.flickr.com …/56150019@N07/9172548850/
At18mm-T1 by canonzenit, on Flickr
Link to the original comparison (same as above, but full resolution):
All sizes | At18mm-T1 | Flickr - Photo Sharing!
I'd say the Oly edges out the Canon for microcontrast, colour and sharpness in most of the situations...interestingly enough, the white car is blurry on the Oly shot, but nice and sharp (you can even see the grille's lines) on the Canon shot, but the leaves on the trees behind it are much better rendered with the Oly...overall, I'd say if you're not pixel peeping, and printing even decently-sized shots, you wouldn't be able to tell the two apart...and that says a LOT about the Olympus...
Next up I'll do some high ISO comparisons...
A friend of mine has been bothering me to sell my 5D2 to him...definitely considering it now...