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Is the zeiss distagon t 15mm f 2 8 zm good for landscape?

Yes, the Zeiss Distagon T* 15mm f/2.8 ZM is a good fit for landscape work, as long as you're on a full frame Leica M body. At 15mm it gives you the wide view that big skies and strong foregrounds call for, and that's the focal range I'd reach for first in landscape photography.

Landscape shooting rarely needs a fast aperture. You'll usually stop down to f/8 or f/11 anyway, so f/2.8 is more than enough. Manual focus is fine when the scene is slow and you're working from a tripod. It isn't stabilised, so use a tripod and a remote release or self-timer. Good bodies to pair it with include the Leica M11 and the Leica M10.

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