Olympus E-M1 Mk.II and MZD 12-100/4.0

Image Samples: Crofton Lake

My other articles related to the Olympus OM-D System.

Back to E-M1 Mk.II Lens Fest, Part 1

F = 12 mm

Full frame, reduced, at F/8

F/4.0

F/5.6

F/8.0

F/11

The center is already very sharp at the full opening of F/4; maybe there is a very slight improvement going to F/5.6 or maybe not. The far corners, however, do suffer from some fuzziness (see branches at top-left), disappearing at F/5.6. This will not stop me from using this lens at full aperture.

At F/4, the lens shows quite strong vignetting in far corners; almost like a wrong hood being used. At F/5.6 it goes away, though flipping images shows that there is still some left. I'm not worried about it, having noticed it only after having used the lens for six weeks.

The camera has an option named, in Olympus-ese, "Shading Compensation", which should take care of the problem during the raw-to-RGB conversion. So far I had this turned off; maybe it is time to reconsider.

Back to E-M1 Mk.II Lens Fest, Part 1

F = 25 mm

Full frame, reduced, at F/8

F/4.0

F/5.6

F/8.0

F/11

From F/4 to F/11, center and off, an exemplary, even performance. No vignetting, even diffraction only starts stirring at F/11. Beautiful.

Back to E-M1 Mk.II Lens Fest, Part 1

F = 50 mm

Full frame, reduced, at F/8

F/4.0

F/5.6

F/8.0

F/11

While the differences over the range of F/4 to F/11 are really minor, the apertures of F/4 and F/5.6 seem to be a bit better than the others.

Again, performance at this focal length is impressive.

Back to E-M1 Mk.II Lens Fest, Part 1

F = 100 mm

Full frame, reduced, at F/8

F/4.0

F/5.6

F/8.0

F/11

For most wide-to-tele zooms the long end is where they do worst. Not this one. Again: best performance at F/4 and F/5.6, quite OK at F/8 and even F/11.

Remember: when I'm in a pixel-peeping mode and say "quite OK", this really means "probably better than I will ever need for any purpose". Seriously.

Back to E-M1 Mk.II Lens Fest, Part 1


My other articles related to the Olympus OM-D System.

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Posted 2017/04/01 Copyright © 2017 by J. Andrzej Wrotniak