if you have a GH5 and a Sigma 18-35mm that you have to get a speedbooster of some sort to complete the setup, the holy trinity if you will. However i’ve started thinking differently about that setup and now have decided to completely forgo a speedbooster with my Sigma 18-35mm. Why? Join me this week as I do some basic tests to show why I believe I no longer need a speedbooster but just a regular Viltrox EF-M1 smart adapter instead.
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