Panasonic G X VARIO 35-100 mm f/2.8 P.O.I.S.
6. Distortion
The problems start when you look at RAW files developed by neutral software (e.g. dcraw). Then you find out that the lens is characterized by really high barrel distortion which at 35 mm goes to –4.24% and it decreases to –1.90% in the middle of the range and to 0.65% at 100 mm. The distortion level of –4% is really high – it is usually seen in zooms designed for full frame or APS-C sensors but you should remember than their angles of view are of 70-85 degrees, not over two times narrower!
I get an impression that it was caused by following rigidly an idea that the Micro 4/3 system should correct distortion on principle. A good, reliable optics specialist from an older generation would try to correct that aberration using the optics. It wouldn’t be difficult to succeed, with such angles of view. Unfortunately, apparently they didn’t bother…
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Olympus E-PL1, 35 mm, JPEG | |||
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Olympus E-PL1, 64 mm, JPEG | |||
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Olympus E-PL1, 100 mm, JPEG | |||
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Olympus E-PL1, 35 mm, RAW | |||
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Olympus E-PL1, 62 mm, RAW | |||
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Olympus E-PL1, 100 mm, RAW | |||
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