An interview with Sigma CEO Kazuto Yamaki about everything from camera lens design decisions and features to online reviews.
While attending the CP+ 2023 show in Yokohama earlier this year, I visited with Kazuto Yamaki, CEO of Sigma Corporation, and one of the most savvy executives in the entire photo industry.
Nikon opening the Z mount for third parties is very good news for anyone using or looking to adopt the platform. The availability of third-party lenses is a strong point in favor of any mount system.: The press release mentioned that the AF drive and lens/camera communication had been specifically optimized for the Z mount. Of course the communication with the camera body would need to be changed to match a different system, but I was surprised that the AF drive itself was changed as well.
The first time I became aware of just how big a difference in-camera aberration correction could make was with the Nikon 18-135mm kit lens. It was quite sharp and lightweight for its focal length range, and the in-camera JPEGs from it looked great. When I looked at the RAW images though, they had a ton of CA, especially in the corners.
This was an interesting tidbit that I hadn’t had before: aspheric elements in the front of the lens help more with controlling aberration in the center, while ones towards the back do more to correct aberration in the sides and corners of the frame.
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