Best telephoto lens for fujifilm g?

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From Fujifilm G: Fujifilm G: Fujifilm's medium format mount for the GFX cameras: a sensor about 1.7 times the area of full frame. Many full-frame lenses adapt, though not all cover the larger sensor.

From Fujifilm MKX 50-135mm T2.9: Fujifilm MKX 50-135mm T2.9: A zoom lens by Fujifilm for APS-C cameras, 50-135mm f/2.9. A manual-focus telephoto cinema zoom with geared rings, rated T2.9.

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