Last week, Fotodiox Pro released the Excell+1, a product that had many of us extremely excited because it seemed to be a far less expensive counterpart to the popular Metabones Speed Booster. Cut to one week later. Many of the new units have made their way into the hands of eager filmmakers, and a few have put the Excell+1 up against the Speed Booster, only to find that the Fotodiox has some major focusing and sharpness issues at apertures wider than f/2.8. The folks at Fotodiox have released a few new videos in an attempt to explain more about what the Excell+1 can and cannot do, and to offer people who were expecting Speed Booster performance a full refund for their purchase.
First up, here's a video directly from Fotodiox Pro explaining the differences between the Speed Booster and Excell+1, and what the Excell+1 is ideally used for.
[% oiopub-banner-4-center %]
Here are photo comparisons of the Excell+1 and the Speed Booster, both on a Nikon 50mm f/1.4 at varying apertures. The results here are very clear at this size, but you can click for the full size versions.
