By technical editor Matt Allard:
Fotodiox have just released the Excell +1. A budget priced focal length reducing adapter that allows you to mount Nikon or Canon FD lenses onto a Micro 4/3 camera (no EOS model as yet). Similar to the popularit also uses corrective optical glass built into the adapter itself. This increases the field of view and as a byproduct also makes the resulting image about one stop faster.
The adaptor also features aperture control – you can control exposure even with Nikon G lenses which don’t have a manual iris. It will be interesting to see just how good these adaptors are optically given the low price.
Using the Excell +1 with the’s Super16 sized sensor and a 50mm lens will give you a full frame equivalent of 103mm, instead of the usual 144mm. On a M 4/3 sensor the same 50mm lens using the Excell +1 would be 70mm instead of 98mm.
Below is a chart describing how the EXcell +1 works with crop factors on certain cameras. While the company is only offering the M4/3 andactors currently it looks like they will have a larger range available shortly given the the cameras listed on the chart.
As a launch offer Fotodiox is retailing the Excell +1 for $139.99 US instead of the usual $159.99 retail. In addition, if you order before July 22nd Fotodiox will throw in the Light Cannon Creative Adapter which is similar to the Excell +1 but give a soft focus effect.
Edit – In light of numerous negative comments online about image quality of the Excell +1 from early adopters, Fotodiox published another video which goes to great lengths to point out that the Excell +1 is not a direct competitor to the Speedbooster and is not going to give comparably sharp results at wide apertures above f2.8. I would advise anyone serious about buying the Excell +1 to watch this before clicking the ‘buy’ button.