Excerpt: I have 3 Metz 54s and one Metz 58 that I use as system for interior architectural photography. I purchased 1 M6 to test. I found that it works with ETTL fine on camera but the special functions in the camera to control groups does not come up. It does with the Metz 58.
Excerpt: This adapter keeps the modular 54MZ flash working with newer Canon cameras while other SCA modules allow use of the same flash with other systems. The older SCA 3102s cannot be updated to this version, version 6, which is needed for compatibility with some new cameras.
Excerpt: Works with 5D Mark III but does not adjust zoom reflector automatically on my model 76 MZ-5 with all lenses. E-TTL II is supported and I am happy to be able to use this functionality with my Metz workhorse flash units.