Due to “extremely high demand,” Kuala Lumpur-based photographer Robin Wong has pitted a Panasonic-Leica 25mm f1.4 and a Olympus M.Zuiko 25mm f1.8 against each other to see which Micro Four Thirds lens performs better. As most reviews, it’s too long to read for someone who’s on the go. Fortunately, 43rumors.com was kind enough to summarized Wong’s user-based experienced review:
1) The Olympus lens is slightly wider in field of view than the Panasonic lens
2) The Olympus lens is *possibly 1/3 EV brighter than Panasonic lens (not conclusive, based on just quick observation on EXIF data)
3) 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)
4) 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.
5) Panasonic lens has poorer CA control (especially shooting wide open) and corner sharpness than Olympus lens.
6) General sharpness between both lenses are almost identical
Here’s a sample photo comparison taken from the review:
If you have some time to spare, hit the source link below to read the full review. And before you do that, you should know beforehand that Wong is an employee of Olympus Malaysia.