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One of the criticisms of the X-Series has been the lack of a credible flashgun for the system. While Fujifilm have produced three flashguns (the EF-42, EF-20 and EF-X20), these have been lacking in the flexibility that professional and enthusiast photographers have been demanding. I bought the EF-20 for my X100 in early 2013 and while this is a great little flash, it doesn't allow me to get very creative due to it's limited controls.
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