arpaagent: Yes, I don't know any f/1.7 lens offering more than 6 aperture blades.
I guess if I can focus at f/1.4 I'll also succeed at f/1.2...
That's why I like the 8-bladed 1.4/50 better: F 1.7/50 at f/2.8
not particularily great but way better: SMC 1.4/50 at f/2.8
and where it really shines - wide open
Any you should check your f/1.2 lens: your backgrounds are very blurry. My lenses are way sharper...
But I don't have pictuers with anything remotely female to offer.
Pentaxor: The Cosina may be a f/1.2 lens as well but it has several downsides I don't like: Its MFD is/are 60cm, it focuses in the other direction (could live with that) and it doesn't have an A-setting.
Explantion: Using my other two full manual lenses is no problem because the difference from f/1.2 to their aperture (f/2.5 and f/3.5) is big enough so there is enough tension to let them stop down wide enough to be used in a semi-A-mode. I dial in EV compensation (for the f/2.5 lens -1.5EV because f/1.2 to f/2.5=2EV) and preset the aperture on the aperture ring matching the setting on the camera.
However on the f/1.4 and so consequentely on faster lenses this isn't possible because there is no f-stop difference to allow for this needed tension.
Hope you understand how I use them.
In general: I really appreciate you taking the time to write something in this thread but if you to please also take the time to read what I've written and what my signature reads.
I had the A 1.7/50 before I had the F 1.7/50. I only bought the F because I got it cheap (70€ with SF-X). So why should I buy one again?
The K 1.2/50 isn't a real option as it doesn't provide anything more than its slightly brighter aperture over my SMC K 1.4/50. Same 8 blades - nothing revolutionary better.
The A however has these 9 blades + like the name says - A functionality.
Conclusion: If I find a A 1.2/50 for a reasonable price I'll buy it. If not I'll just let the idea fade away and forget about it.
The back-up plan that came to my mind very recently (yesterday) is to sell them both like my original idea and buy the Sigma 50mm F1.4 EX DG HSM instead.
Except the f/1.2 aperture it offers anything the A f/1.2 would plus even more any of my current lenses do.
Unfortunately the same applies here: I highly doubt you can buy one for my set budget.