Olympus E-M1 Mk.II and MZD 12-40/2.8 Image Samples: Crofton Lake |
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Back to E-M1 Mk.II Lens Fest, Part 1
Update of July, 2018: Added samples for F/16 and F/22; retrofitted with Swapper.
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12 mm |
F/2.8 | |||||||||||||||||||||||||||||||
F/4.0 |
F/5.6 | |||||||||||||||||||||||||||||||
F/8.0 |
F/11 | |||||||||||||||||||||||||||||||
F/16 |
F/22 | |||||||||||||||||||||||||||||||
This is a premium lens, and it shows. It is tack-sharp fully open at center and very close at far sides (nothing of interest in corners, sorry!). There is not much space for improvement, but stopping down to F/4 makes the center just a tad sharper and brings the sides to the same level. Things stay this way all the way to F/11, where some softening due to diffraction is visible, to become quite bad at F/16.
At F/2.8 some light fall-off (vignetting) can be seen in corners, disappearing at F/4. It is, however, quite moderate and the camera can fix this (I just have this option inactive for testing and samples). A close look at the branches in the top-left corner shows no traces of chromatic aberration or purple fringing. I believe this can be (and is) addressed at the stage of raw-to-RGB conversion, so it becomes a non-issue in newer cameras. The same branches show some sharpening artifacts of the common "bounce" type. One more reason to dial sharpening down by a notch, even in a camera as advanced as this one. Back to E-M1 Mk.II Lens Fest, Part 1
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| 25 mm
| F/2.8
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| F/4.0
| F/5.6
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| F/8.0
| F/11
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| F/16
| F/22
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Same impression as above; the difference between the first two apertures seems to be in local contrast rather than resolution. The sides become a little bit sharper at F/4, but this is just for the record, the differences are really hard to see.
Diffraction effects, again, spoil the party starting around F/11. Back to E-M1 Mk.II Lens Fest, Part 1
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| 40 mm
| F/2.8
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| F/4.0
| F/5.6
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| F/8.0
| F/11
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| F/16
| F/22 <--->
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At this focal length the pattern repeats itself, except that the slight loss of sharpness at F/2.8 is somewhat more visible, especially in corners. There is not enough of it, however, to start avoiding this aperture.
Back to E-M1 Mk.II Lens Fest, Part 1 |
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Posted 2017/04/01; last updated 2018/07/23 | Copyright © 2017 by J. Andrzej Wrotniak |