Best lenses for Micro Four Thirds: Digital Photography Review
Understanding Crop Factor | B&H eXplora
DSLR Crop Factor conversion chart - what "lens" you actually shoot with when you're still too poor for a full… | Crop factor, Manual photography, Photography basics
Re: Olympus OM to Micro Four Thirds Speed Booster released!: Micro Four Thirds Talk Forum: Digital Photography Review
Metabones®
Metabones®
Micro Four Thirds system - Wikipedia
Metabones Speed Booster adapter gives lenses an extra f/stop and nearly full frame focal lengths on APS-C sensors - Newsshooter