Panasonic Leica DG Vario-Elmarit 50-200 mm f/2.8-4 ASPH.
5. Chromatic and spherical aberration
Chromatic aberration
The Panasonic Leica DG Vario-Elmarit 50–200 mm f/2.8–4 ASPH. doesn’t have any problems with longitudinal chromatic aberration as photos below show pretty well. You can notice some colouring of images, especially at 200 mm, but the effect is not especially distinct and it would be difficult to notice it in real life photos. |
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The graph below shows the Panaleica’s 50-200 mm performance when it comes to the lateral chromatic aberration correction.
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Most problems you’ll experience at the shortest focal length, where the results are close to medium level. At 200 mm the lens fares a bit better and in the middle of the focal range the problem practically disappears, with the aberration being very low no matter what aperture you employ.
| E-M5 II, RAW, 50 mm, f/11.0 | E-M5 II, RAW, 150 mm, f/3.9 |
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Spherical aberration
In first photos of this chapter it is clear the lens doesn’t show any ‘focus shift’ effect. The circles we got in front of and bahind the focus aren’t identical but they also don’t feature any distinct differences. It indicates lack of significant problems with spherical aberration correction.
| Olympus E-M5 II, 100 mm, f/3.6, in front of | Olympus E-M5 II, 100 mm, f/3.6, behind |
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| Olympus E-M5 II, 200 mm, f/4.0, in front of | Olympus E-M5 II, 200 mm, f/4.0, behind |
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