Sat Dec 29, 2018 10:45 am
joe12south wrote:Completely average amount of distortion for a lens that wide. We are so used to lens correction either in camera or in RAW processing that we forget this.
Not at all. 12mm isn't that wide on M43 and equivalent lenses on DSLR's for APSC or full frame don't distort to this degree and have to be designed this way as they have optical VF's. M43 with it's EVF can liberate lens designers to produce compact lenses without having to worry about distortion if it is corrected in-camera or in post. The 12-40 is a superb lens which is sharp right to the corners even wide open and has a great MF action. Resolve has 2 tools for correcting this but on the BMPCC4k you need to be aware of this when framing. I have not noticed any image quality (loss of resolution) from using this tool. If you need 12mm without any distortion there is a Laowa 12mm 2.8 for full frame which could be adapted and this has almost zero distortion even on full frame which makes it 2x as wide as a 12mm design for M43. Filtering for ND will be a problem though as it has a big front element that needs a 95mm round filter or 100mm square filters (with adaptors).
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