>>2964762A lot of it is down to what we currently know, high end lens design has been focused on dslrs with mirror boxes for 50+ years. It takes a lot less time to develop.
If we look at sonys mid range options, like the 28, 35 and 55, they are clearly designed from the ground up for a much smaller flange distance and their quality and speed belies their size and weight. Rumor has it there's a 20mm and 85mm coming for this range next year.
Voigtlander and leica have been doing this for years, and their tiny lenses are testament to what can be achieved and improved.
>>2964804>why would anyone design a lens for e mountBecause the smaller flange distance opens up a whole world of possibility. You can do things that aren't possible on a dslr. Hence why mirrorless is the obvious choice for anyone looking for the best equipment.