Thanks for the great comparison images....and I fully agree with the above, that the 135/1.8 is one of THE reasons to but a Sony Full-frame. It has never failed to deliver for me.:salute:This is the 135mm lens wide open at ISO 1600 F1.8. I wanted to see how fast the AF was and it is deadly quick now. These are all handheld and I 'm pretty damn impressed. This is WHY you buy the Sony system is this lens. LOL