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Panasonic S 85mm F/1.8 Lens Review - Performance

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Panasonic Lumix S 85mm F/1.8 Performance

Panasonic S 85mm f/1.8 L-Mount

Central sharpness is excellent from f/1.8 through to f/8, and very good from f/11 to f/22. The edges are also excellent from f/1.8 to f/8 and very good from f/11 to f/22. Of particular note is that the sharpness is almost perfectly even from edge to edge.


Panasonic S 85mm f/1.8 MTF Charts

How to read our MTF charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges.

The scale on the left side is an indication of actual image resolution and sharpness as LW/PH and is described in detail above. The taller the column, the better the lens performance.

For this review, the lens was tested on a Panasonic Lumix S5 camera body using Imatest. Want to know more about how we review lenses?


CA (Chromatic Aberration) is measured with any in-camera corrections switched off, as far as we can know anyway. Central figures are close to zero and even at the edges CA is well controlled. If any further correction is desired, then there are in-camera and software solutions.


Panasonic S 85mm f/1.8 Chromatic Aberration Charts


How to read our CA charts

Chromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on Panasonic Lumix S5 camera body using Imatest.


Distortion measures at just -0.07% barrel, which is so close to perfectly rectilinear as makes no difference. An excellent lens for architecture.

Bokeh is very smooth, with lovely soft gradation in those out of focus areas, as befits a lens intended for portraits.

Flare has been totally nailed by this lens, even with bright light sources right in the frame it is all but impossible to generate any loss of contrast or any artefacts.

Vignetting is present at wide apertures, perhaps a good thing for a portrait lens, and stopping down shows some very impressive and low figures.


Aperture Vignetting
f/1.8 -1.5
f/2 -1.3
f/2.8 -0.8
f/4 -0.6
f/5.6 -0.4
f/8 -0.3
f/11 -0.3
f/16 -0.3
f/22 -0.3


Panasonic S 85mm f/1.8 Sample Photos



Panasonic S 85mm f/1.8 Aperture range

You can view additional images in the Equipment Database, where you can add your own review, photos and product ratings.

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