Voigtlander sharpness 1.2(1.1) vs 1.4

[zecahue]

The question here is simple: Do the Voigtlander Nokton 35mm 1.2 and 50mm 1.1 worthy the double price difference comparing with their 1.4 brothers? I´m talking about sharpness between 1.4 and 2.0.

Thanks in advance..

 

[zecahue]

I´ve read some stuff that said to make a very wide open lens the sharpness may be sacrificed, that´s why most of the top lens are T2 or even T3. But also special designs and new technology are making good wide open lenses, like the nokton 25mm f0.95.

Beside the first question, how about others brands: is the nikkor 50mm 1.2 sharper than they 1.4 brother when stopped down a bit?

Do we get better IQ with f1.2 lenses (when sttoped down to the same aperture of a 1.4 or 1.8) or only get less DOF and a bit more light for a big extra portion of money?

 

[TheDingo]

...This article should give you some idea about how super speed lenses behave: Luminous Landscape : Fast Lenses for the Epson R-D1

 

[zecahue]

Great article!