I've been beating on google trying to get it to answer this question for me and I'm not having any luck
What's the difference between an Ilex Acme Synchro and a Ilex Acme shutter?
Clearly, it has something to do with flash synchronization but both shutters appear to have bi-post so even the non-synchro shutter must be able to sync with flash.
What's the real difference?
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