Speed Boosters Compared // Metabones BMPCC4K vs Viltrox EF-M2 II

Speed Boosters Compared // Metabones BMPCC4K vs Viltrox EF-M2 II

Comparing the new Metabones Speed Booster for the Pocket 4K to the original Micro Four Thirds model & the Viltrox EF-M2 II for image quality and autofocus.

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🛒 Original Metabones Speed Booster for MFT: https://geni.us/A5uQHXZ
🛒 Specialized Metabones for BMPCC4K: https://bhpho.to/2mrbnGp
🛒 Viltrox EF-M2 II: https://geni.us/bNjmnUo
🛒 Sigma 18-35mm: https://geni.us/swEAFI
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Table of Contents:
0:41 – What’s Different on the BMPCC4K Speed Booster?
0:47 – Sensor Stack Thickness Explained
2:36 – Longer Lenses Are Not Really Affected
3:13 – Demonstration of the Sigma 18-35mm Being Parfocal
4:37 – Build Quality Notes / Viltrox vs Metabones
5:56 – The Viltrox Displays a Larger Maximum Aperture
7:44 – Outdoor Test: Tree Branch Against Bright Sky
8:21 – Continuous Autofocus Tests & Firmware Notes
9:48 – Viltrox EF-M2 II Autofocus Test
10:06 – Metabones EF-MFT Ultra Autofocus Test
10:22 – Autofocus Noise Sample
11:06 – How to Adjust the Focus on Speed Boosters
14:46 – Sharpness Comparison
15:36 – Field of View Differences
16:38 – Face Detection Autofocus Test
17:46 – Value Conclusions: Which Focal Reducer Should You Buy?

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