Are Z lenses APO lenses?

Z6User wrote:

SrMi wrote:

Some Voigtlander Z lenses are APO (APO Lanthar 35mm and 50mm).

But how are they in practice? As I understand it, APO is a marketing designation.

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Cosina/Voigtländer definitely delivers with their Apo-Lanthar lens series.

Regarding color aberration and the level of other optical corrections, like coma, distortion, both are flat-field lenses, but also resolution/contrast/clarity from wide open across the field the CV Apo-Lanthar's are the closest to perfect 35 + 50mm lenses in the whole Z-System at the moment, maybe with the exception of the Noct, but it's a 58/0.95, total different beast.

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Fred Miranda about the color aberrations with the CV 35/2 AL-Z.

Very well corrected for axial CA. The best I've seen for a 35mm lens. However, there are still traces of green/magenta color error under extreme conditions. Negligible lateral CA.

The Voigtlander 35mm f/2 APO-Lanthar is one of the best 35mm lenses ever produced!

Small but mighty Voigtlander 50mm f/2 APO-Lanthar is one of the best 50mm lenses on the market!

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https://www.cameralabs.com/voigtlander-50mm-f2-apo-lanthar-review/

https://www.cameralabs.com/voigtlander-35mm-f2-apo-lanthar-review/

The Cameralabs reviewer is selling his Zeiss Otus 28/1.4 and is keeping the 35/2 AL-Z Voigtländer as a consequence of his review of the CV 35mm f/2 AL-Z.

"My comparison lenses were the Nikon Z 35/1.8 S, the Sony FE 35/1.8, the Sigma 35/1.2 Art and the Zeiss Batis 40/2.0 CF (I haven't gotten the Viltrox AF 35/1.8 yet, but it certainly wouldn't be competition optically). And if I had added the Zeiss Otus 28/1.4, that would have been easily beaten by the Voigtländer as well....
As a consequence, I will keep the Voigtländer and sell my Zeiss Otus"

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