Olympus M.Zuiko Digital 12-40 mm f/2.8 ED PRO
11. Summary
- solid casing, mostly made of metal,
- excellent image quality in the frame centre,
- very good image quality on the edge of the frame,
- very good correction of chromatic aberration,
- moderate astigmatism,
- splendid, fast and silent autofocus,
- sensible performance against bright light.
Cons:
- huge distortion at the wide angle of view,
- distinct coma at the maximum focal length,
- noticeable vignetting at the shortest focal length.
The Panasonic G X VARIO 12–35 mm f/2.8 ASPH. P.O.I.S set the standards pretty high in this category but the Olympus company managed to meet them without any problem. First of all they produced a bit cheaper lens with a wider focal range. When it comes to the image sharpness the Panasonic is a bit more even but the Olympus provide a tad more lpmm at the maximum relative aperture. Apart from that you get slightly lower distortion and chromatic aberration, noticeably lower vignetting and distinctly better performance against bright light. The Panasonic, for a change, corrects the coma better and its off-focus images look nicer; it is also physically lighter and smaller, despite built-in image stabilization, and it is produced in Japan.
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It is clear both lenses have a lot to offer - here small nuances can be decisive factors. We enjoy such a situation a lot. It’s better to have a choice between two good lenses than between two weak ones, right?
