again thanks for all the replies! well i sometimes print 750mm x 1000mm and i'm quite happy whit the results when i use my nikon which has an aps-c sensor.
@Phil Rudin. you're right, the comparison might be a little wrong. the oly brings some features which the sony can hardly beat and also the built quality is much higher, not forgetting the price.
@Jock. thats one of the main reasons why i would love the e-m1 and also the built in image stabilizer is a nice feature.
for me it wouldn't be a question if the oly had a bigger sensor thats the only point which speaks against it but still a important one.
does any one of you use one of those cams?