I bought a Metz 54 MZ4 and a SCA 3502 adapter. It will not flash when set on TTL, but as has been said, it works when set on GNC. The only problem is that GNC is only available when the flash is first set to M (manual) as per the instructions. On that setting, the flash recognizes the lens focal length, but I only get a decent exposure with the lens set wide open (in this case 35mm @ f2). If I set the aperture any smaller, it under exposes which is not surprising since the flash was set to M as well as GNC.
How do I get it to operate as a TTL so the flash adjusts it's power as the TTL in-camera meter dictates?😕