I sent it back because the quality is really too low. The aim is to look solid, it is compact, but even a 300 mm Beercan pushed converter device is better defined pictures. Now the Beercan minolta it is found to 75 euros perfect state occasion and it is much lighter, it is also macro .. so actually we should not have high expectations when buying this. I wanted to test to see, I saw. Finally returned, I bought a sal 55-300. mounted on my sony A65, he took pictures quite correct, even very good, small birds, moon, etc. With samyang, nothing is ever net.
