Resolution at f11
(Nikon on FotoDiox Pro Adaptor)

Nikon 15mm f3.5 AIS v Sigma 12-24mm f3.5-4.5

 

100% Crops (f11) Centre image circle

Nikon 15mm / f11 / FotoDiox adaptor	Sigma 12-24mm / 15mm / f11

Centre frame, at f11, the difference is slight, but whereas the Sigma 12-24mm was a minor improvement in the previous comparison, this time the roles are reversed, and the Nikon perhaps just edges it on the FotoDiox Pro adaptor.

 

100% Crops (f11) corner

Nikon 15mm / f11 / FotoDiox adaptor	Sigma 12-24mm / 15mm / f11

Once again the Nikon 15mm with the right adaptor proves itself superior to the Sigma zoom, the gap between them widening at the edge of the image circle.

< f5.6 Retest | Vignetting/CA >

Related links:

Sigma 12-24mm v X