Had a couple of m4/3 & c-mount lenses that I decided to test with the A7Rii and its zoom function. Lets first see how the quality of the zoom mode compares to the FF and S35 modes. Test done with FE 55 f/1.8 at 12800 ISO recorded in 4K 100mb/s. For FF, S35, S35 x1.5 & S35 x2 the fov was matched in camera. The S35 150% & S35 200% were shot at x1.5 & x2 distances respectively and cropped in Premiere. Quality is best with S35 as expected. S35+1.5X and S35 with 150% crop are very close to FF. It appears that the zoom mode works by cropping the S35 and upscaling again to 4K. Then I tested the SLRMagic 25mm and I was delighted to find that it was usable even with X1.1 zoom. A c-mount lens that I had was usable with X1.4 zoom. I was surprised by that since spec wise it was designed for a 2/3" sensor. I really liked the hexagonal blur plus it focuses at 10cm! So there you go folks. If you have the A7rii and any manual m4/3 or c-mount lenses go and buy these che