Re: Cosina Voigtländer APO-Lanthar 90/4 VM officially announced for August release
Steve Spencer wrote: 1bwana1 wrote:
Maybe some peoples expectations for a 90mm APO lens is being set by the Leica APO-SL. Very very flat and high. Also perfect alignment of color channels at multiple points. Probably the reference for such a lens.
Of course this level will never be achieved within the limits of an appropriate M lens form factor. Still, probably worth referring to in discussions such as this one.
Yes, that lens is of course a good reference and at f/5.6 this new lens does match it in the center, but as you say in a much smaller lens you can't expect the same performance across the frame. Still in the center at it match the SL 90 APO that is stopped down 3 stops when it is only stopped down one suggested very high center performance indeed.
Center is not the point of the APO-SL lens set. Many lenses can match this at center. Center is not the reason to own APO lenses. It is across the frame performance, color management, and falloff (rendering of OOF areas) that were the areas of concentration when designing them. I think they set the industry standard for these attributes.
Jul 15, 2026 at 11:10 AM
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