>>4159720A fractional EV exposure push is wholly irrelevant. Unnoticeable to the human eye, even when pixel peeping. Overall difference between MFT and FF is 2 stops of ISO, on the other hand, not a half stop. And it's across the whole image, not just in one corner, a part of the image that is traditonally not viewed critically except by some retard with the magnifying function in his image viewer.
Here are the numbers for these lenses:
Olympus 20mm peak vignetting at f1.4(f2.8): -1.35EV
Sony 40mm peak vignetting at f2.5: -0.77EV F2.8: -0.52EV
Literally fucking nothing. If you are pushing exposure in post so much that the SNR in a tiny corner matters that much I recommend going back and learning how to use a camera.
Now, here are two center crops from the sony and lolympus lenses wide open. Tell me what's supposed to be worth 100g and a noticeable size increase here?
Conclusion: It would be more prudent to keep the camera more portable and just use a smaller lens, which is the entire point of micro four thirds. Treating crop sensor cameras as quality-focused professional tools is a waste of time, just like buying an expensive high resolution full frame camera just to use cheap and vintage glass, and defeats the purpose of the tool.
