Sigma MC-11 is excellent for photo AF-C including eye AF, but pathetic for AF-S/DMF/Video AF: Sony Alpha Full Frame E-mount Talk Forum: Digital Photography Review
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Sony A7iii + Sigma MC-11 Lens Adapter Review - Extremely affordable and better than Metabones?! - YouTube
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EF->E-mount converters | Please share your experience in this thread | PRESENT: Commlite, Metabones IV, Sigma MC-11, Techart III, Viltrox III, Viltrox ƒ Booster I & II | .: Canon mount lenses
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