Are Z lenses APO lenses?

Started Aug 27, 2022 | Discussions thread
Z6User Senior Member • Posts: 1,566
Re: Are Z lenses APO lenses?

davethebirder wrote:

....... the Sigma 150mm F2.8 macro does well with lateral CAs, spherical aberrations but still retains longitudinal CAs, inspite of the APO designation ...... I think the Sigma 50-500 was designated APO but LCAs were the least of it issues ......

the question is, is it false claims or being economical with the truth ??

I’ll leave others to answer that question.

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