On a cropped sensor camera, do you actually get more light using a full-frame lens + speed-booster than you would with a cropped-sensor lens, or is this misleading advertising from Metabones and
![Prototype Metabones Speed Booster equipped NEX 7 *VS* full frame 5D Mark III - 1st comparison shots - EOSHD.com - Filmmaking Gear and Camera Reviews Prototype Metabones Speed Booster equipped NEX 7 *VS* full frame 5D Mark III - 1st comparison shots - EOSHD.com - Filmmaking Gear and Camera Reviews](https://www.eoshd.com/wp-content/uploads/2013/01/24mm-ff-sb-660px.jpg)
Prototype Metabones Speed Booster equipped NEX 7 *VS* full frame 5D Mark III - 1st comparison shots - EOSHD.com - Filmmaking Gear and Camera Reviews
![VILTROX EF-E auto-enfoque AF adaptador reductor Focal de refuerzo adaptador para Canon EF a Sony E-Mount APS-C cámara NEX-7 NEX-6 : Amazon.com.mx: Electrónicos VILTROX EF-E auto-enfoque AF adaptador reductor Focal de refuerzo adaptador para Canon EF a Sony E-Mount APS-C cámara NEX-7 NEX-6 : Amazon.com.mx: Electrónicos](https://m.media-amazon.com/images/I/71XgJAf-2iS.jpg)