<p>Thanks for your opinion. I though that with this there could be greater possibility to experiment as I can vary with focal distance, could be great for macro shooting.<br>
Also, I often go to 'car boot' markets and buy many old lenses there. With this I could fit to my camera and check any lens on spot, and I don't need to carry many adapers with me.<br>
Yes, I'm bit worried if the fixing screws won't leave any marks on lens mounts, but I can test it out very soon as I'll receive it on Monday or latest Tuesday.</p>