Vivitar 28mm f2.5 🤔🤔🤔... A confusing lens!

One year ago, I bought this wide angle Vivitar, and it was a big disappointment. But after watching few videos these last few days, I had the feeling that I might did something wrong... So here the final call: Will I keep it or sell this lens? CHAPTERS: 00:00 Weird Flex Intro 01:16 Test shot on MFT and comparison to Meike 25mm 02:08 Why I will not grade any lens review from now? 02:58 Vivitar 28mm Specs, history, build 04:08 Price trend 04:22 Focus breathing, focus throw and the aperture ring issue 05:04 Why the Vivitar 28mm is confusing? 05:48 The Abracadabra moment 07:17 The Bokeh 09:48 The Flare 08:40 Wrap up: Pros & Cons summary and Recommendation BTS INTRO Here a quick break down of how I made the intro:    • BTS VIVITAR INTRO   #Vivitar #lens #vivitar28mm