Hi, i got this new Speedbooster yesterday from eBay for €145.-. I didn't had the time to do some real photos with it but from my short testing it seems that AF is much slower with this booster and you need more light, despite the fact that it increases the amount of light hitting the sensor. It also converts the lens parameters correctly so my EF 28/1.8 is shown as a 19/1.2. Both mounts and the barrel are made of metal and it feels very sturdy. It also has a removeable tripod mount and it comes in a transport case that's a bit bulky. It's a bit shorter than a "dumb" EF on EOS M converter but much more heavy. There is also a USB port for firmware updates.
I hope i will find some time to shoot with it over the weekend and post some pictures. I wouldn't be surprised if its not very sharp in the corners but, most likely it will be used for photos with the corners out of focus anyways. For me it's also more a gadget to find out whether a FF camera is interesting to me as my EF lenses will behave almost as mounted on a FF camera.
B.
I hope i will find some time to shoot with it over the weekend and post some pictures. I wouldn't be surprised if its not very sharp in the corners but, most likely it will be used for photos with the corners out of focus anyways. For me it's also more a gadget to find out whether a FF camera is interesting to me as my EF lenses will behave almost as mounted on a FF camera.
B.