One reason I really like using the Nokton 35/1.2 as my 'do everything 35mm' is when using Tri-X EI 400, I can set the shutter speed of the M5 at 1/1000sec and forget about it, simply adjust the aperture and pretty never run out of light until I enter a dark building, simply keep opening the aperture until I hit f1.2. Of course, there are times, I will bring down the shutter speed to gain more depth-of-field, but for quick, hurried shooting it works like a charm. At least for me.
That is all for now!