I guess it's something with the quality of the glass. Modern lenses are dead sharp and have very little flaring, ghosting, chromatic aberrations and low distortion. They also focus instantly with zero noise.
Say there's a short Nikon 35mm f2 which has very bad ghosting situation, and it's resolution is miles behind modern 35mm f1.8 mirrorless.
I guess it's something with the quality of the glass. Modern lenses are dead sharp and have very little flaring, ghosting, chromatic aberrations and low distortion. They also focus instantly with zero noise.
Say there's a short Nikon 35mm f2 which has very bad ghosting situation, and it's resolution is miles behind modern 35mm f1.8 mirrorless.