For along time the 35 was considered a runt of a litter. Lower MTR figures than 45 Planar (wide open), only fair bokeh. For years it was the cheapest lens in all G lineup. However within last 18 months it was discovered by Micro 4/3 and Sony Nex users and it price went up. Because it doesn't have a recessed rear element, it's the widest many adapters can use, hence its popularity. I shoot 35 Planar as well as 45, and 28 Biogon and each one has its niche. For a a bit wider view than 45 can provide, in low light, when one tries to isolate the subject from the background shooting wide open the 35 is the lens. And it's nice to look at.