DPReview: Metabones introduces Speed Booster XL 0.64x for Panasonic GH4

Metabones has announced a new Speed Booster designed for the Panasonic Lumix DMC-GH4. The Speed Booster XL 0.64x is designed to reduce the camera's 2x crop factor by 0.64x, meaning that in 4K video mode the GH4's 2.34x crop factor becomes 1.50x - Super 35 cine format. Read more

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