>>3961831Ephotozine has the vignette on the Sony 50 2.5 at -1.7 max, and the Olympus has -1.1 stops max.
Why must you be so disingenuous.
But the bigger issue is the insanely soft edges on the Olympus, just 1100lw\ph wide open and only 1700 at its best at f8. You can't fix that like you can vignette. Also the CA, which never drops below a whole pixel, the Sony never goes over half a pixel for CA, and corners are over 3500lw\ph all the way from wide open to f11, the Olympus barely scrapes 2500 lw\ph in the centre.
And don't forget, the Sony costs 1\3 that of the Olympus, the Olympus is also considerably larger and weighs more than twice as much.
Oh, and the reviews of the 25mm 1.2 noted that the autofocus would often miss at f1.2, non functional af on a lens that costs $1200 is a hilarious joke.
And people actually using the em1 iii we're finding 3-4 stop ibis performance at best, barely better than anyone else, and for the same price and weight as the Olympus lens, you can get a 50mm f1.4 on Sony, and actually take photos of humans in low light, not that you would ever need that ;)
If you want to spend your money on oversized, overweight, overpriced lenses with unfixable, unpleasant image quality issues, go ahead, buy your mft lenses.