Advice sought: how big, realistically, could I print up ...

[tanngrisnir3]

from a Panasonic GH2? I have an inquiry from an old intern of mine about hanging some shots of my in a clinic in Germany, printed at 40" and on acrylic.

That was two camera generations ago, shot RAW, 16MP 4/3 sensor, and likely the single best bit of PP I ever did for that camera. I've seen a promotional video of some guy in NY printing up GH3 shots to sizes I never would have considered, but have never printed anything from my GH2 years. I'm looking to try and not waste time/money on test prints to the degree that I can. Thanks!

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Hornitos Road, Morning in the Forest by tanngrisnir3, on Flickr

 

[ManofKent]

I've had a shot from a 12mp (admittedly full-frame) camera blown up larger than that for an exhibition and it looked fine with a little interpolation. Yes if you stood 1ft away you could see pixels but you don't view prints of that size from that distance.