minox bd bp 10x44 vs pentax ED 10x50
Sorry for the poor english.
Not surprising at all, since porro prisms are inherently more efficient in terms of optics - better light transmission and no need for phase-coating - and therefore cheaper to make to high optical standards. The big three have gotten out of porro prisms primarily because of poor sales. People want roof prisms and their advantages, these days, but I still love a good porro prism.
Of course,on the whole, the ED are a pair of excellent bino, very bright and clear,significantly better than minox bp.
It is more likely sample variation than anything inherent in aspheric design. You might want to try against another one in a store sometime.
I agree, though I'd rank both as excellent in terms of optics in their respective price ranges. Enjoy your ED