Full-frame glass can get quite small, too. A 35mm f/2 for the Leica M system weighs in at 250g/0.55lbs.
I believe the equivalent APS-C Fuji 23mm f/2 is around 200g/0.45lbs.
Of course, with the Summicron you give up such new-fangled innovations as, say, autofocus.
Re:Camera sales are falling sharply
by ubermonkey on Thursday September 05, 2019 @08:59AM
(#20886190)
Yeah, that's a hard stop for some folks -- me included. I'm sure the AF material is a big contributor.
The glass for my Sony A7ii is significantly larger than (most) lenses I had for my Olympus m4/3 body. The exception is the main prime on both systems -- I have the Sony 50mm/1.8, which is about the same size as the Panasonic/Leica 25mm/1.4 that filled the same role on my Olympus.
Of course, because they're full-frame cameras, the glass is still big, so you don't get the hyper-compact size of a micro-4/3 body+lens, but it's still waaay smaller than, say, a 5D + a lens.