50mm Nokton - f1.1 or f1.5?

CrisR;2334687the look is soft compared to my Planar and as I'm now very much moved over to the Zeiss lenses and their crispness said:
Strange, I get sharper results fom it, on film however. Maybe examples differ. Mine is sharper than a Noctilux f/1.0, but the dept of field is of course very shallow.

Leica M3, Nokton 50mm f/1.1, Tmax400.

Erik.

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What I said, was, in the post just above, that since using the Zeiss lenses, I prefer a sharper, more modern look than the Nokton 1.1 gives.

I also said, just above, that therefore I shoot it at f1.4 to improve its performance, as wide open is not to my taste.

I then said that if I'm shooting it as if it were an f1.4 lens, there's no point me carrying the extra bulk. I also said I would be happy to trade an extra stop of light (f1.1 to f1.5) for better performance.

I then pointed out that this naturally leads me to the conclusion that the Leica 50mm Summilux ASPH is the ideal lens fr me, as that can, and does, perform excellently when compared to the 50/2 Planar that I consider to be my reference lens for image performance.

I finished off stating that the 50 Lux is outside my purchasing power fr the next 12-18 months, so in the mean time I would happily trade the f1.1 for the more modern look of the current f1.5

If you got from that, that I was comparing an f2 lens with an f1 lens, then I'm not sure I can break down my reasoning any further, though I hope others will understand my reflection on my experiences and why, as a result, I might choose the 1.5 over the 1.1 - aka, the main quandary of the thread.
 
If I remember previous comparisons, the Nokton f1.1 has superior performance to the Sonnetar in all aspects? The Sonnetar is smaller tho.
 
I do enjoy the 50/1.1, it is actually quite a good lens. I had Don optimize mine for the M9 so I mostly use it there, or on the ZI.

I do own the Nokton 50/1.5 but I don't use it a lot, not because it isn't good, it is very good. But for my walk around lens I prefer the ZM Planar (which is a lot better), and the 50/1.1 is my preferred low light lens. Besides, there are a lot of good options at 50/1.4 or 1.5 so the competition is much tougher. At that aperture speed I much prefer my ZM Sonnar 50/1.5 because of that len's character.

But, to be honest, it all comes down to personal preference. They are both very, very good lenses. Just remember, at 1.1, and even 1.5, DOF is very shallow. A tripod, or at the very least, a monopod, is good insurance against missed focus. If you are shooting handheld you are better of with the ZM Planar or the Leica Summicron IMHO. Your success rate will be much higher so you will almost certainly be happier.
 
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