[Brightcolours]

Interesting test. I went for the FD 50mm f/1.2 (non-L version) and put an Ed Mika mount conversion on it. That too has the mirror meets lens problem close to infinity on a FF body. Unfortunately that lens isn't at all sharp wide open (kinda like the f/1.0), although I can pretend that is part of the attraction.

Yes, finally I went for an Ed Mika mount for this lens too. I also saw a nice FD 50mm f1.2 L for sale in my country, but to convert it would be difficult (I don't think Ed Mika has one for that lens yet?) and images I have seen taken with this 55mm had a charm, so that is why I decided to try thatone. 

On the f/1.0, I'm kinda kicking myself for passing on one years ago. It was early on in my photography hobby and I had not long switched from

Sony to Canon. With hindsight, the price was a bargain at just over £1k. Even if I just bought it to sell it I'd be laughing now.

Wow, that was an amazing find... bad decision to not pick it up right away for sure! 

Out of interest, was a more modern f/1.4 a consideration? I know there's the fractional stop difference, but opens up a lot more possibilities.

Well, I kind of like the 55mm length, so I first wanted to try those. A Canon EF 50mm f1.4 is always a cheap option, but first I'll see how I will like these 55mm f1.2's. The price reduced Sigma is not too bad either, nor is the Voigtlander 58mm f1.4. I wonder why they do not have that lens in EF mount?