With everyone comparing the two lenses and the effect on purchasing decisions I thought you'd all find this interesting -- I did. Ok, Robin Wong may not be as unbiased as he once was but this seems all straightforward enough.
Basic points --
The Olympus lens is slightly wider in field of view than the Panasonic lens
The Olympus lens is *possibly 1/3 EV brighter than Panasonic lens (not conclusive, based on just quick observation on EXIF data)
There is not much difference in shallow depth of field rendering between F1.8 and F1.4 lenses (if point number 2 is true, the gap is bridged due to either the Olympus lens being 1/3 EV brighter than F1.8 or the Panasonic lens being 1/3 EV darker than F1.4. This is just my observation, not a conclusive statement)
Although Olympus magnification factor is 0.12x and Panasonic magnification factor is 0.11x, I find the close up shooting capability of Olympus lens to be significantly better than the Panasonic lens.
Panasonic lens has poorer CA control (especially shooting wide open) and corner sharpness than Olympus lens.
General sharpness between both lenses are almost identical
Basic points --
The Olympus lens is slightly wider in field of view than the Panasonic lens
The Olympus lens is *possibly 1/3 EV brighter than Panasonic lens (not conclusive, based on just quick observation on EXIF data)
There is not much difference in shallow depth of field rendering between F1.8 and F1.4 lenses (if point number 2 is true, the gap is bridged due to either the Olympus lens being 1/3 EV brighter than F1.8 or the Panasonic lens being 1/3 EV darker than F1.4. This is just my observation, not a conclusive statement)
Although Olympus magnification factor is 0.12x and Panasonic magnification factor is 0.11x, I find the close up shooting capability of Olympus lens to be significantly better than the Panasonic lens.
Panasonic lens has poorer CA control (especially shooting wide open) and corner sharpness than Olympus lens.
General sharpness between both lenses are almost identical
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