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G9X wide angle corner distortion (JPEG)?

Started Dec 9, 2015 | Questions thread
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mikan
mikan Senior Member • Posts: 1,401
G9X wide angle corner distortion (JPEG)?

See the first picture below, and notice the ornaments in the left corners (both top and bottom) look distorted and egg-shaped. A sphere should have a perfect circle profile from any angle, so this seems like a distortion. This was taken at 10.2mm. The posted picture is at f/2 but the same distortion can been seen with f/4. JPEG SOOC. I would expect corner distortion in RAW, but shoulnd't be present in JPEG (or at least barely noticeable), right?

I've taken lots and lots of pictures at 10.2mm but never noticed any corner distortion in any other pictures. But probably other pictures don't have obejects in the corners that show distortion well.

The second picture has similar objects in the corners, shot at 15mm. Maybe a slight distortion seen in the matte orange ornament in the lower left corner? Hard to see because of the shadow, though.

What do you guys think?

Corner distorion? 10.2mm JPEG SOOC

15.0mm. A slight distortion in the matte orange ornament in the lower left corner?

 mikan's gear list:mikan's gear list
Sony RX100 III Sony a6300 Sony E 50mm F1.8 OSS Sony E 55-210mm F4.5-6.3 OSS Sony E 16-50mm F3.5-5.6 PZ OSS +4 more
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Canon G9 X
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