With regards to the size and weight of lenses, Sigma also announced the most compact autofocus 50mm f/1.4 lens ever along with the FP-2, which is even smaller than their 50mm f/2 lens. It's really nice when you can just toss a full frame camera with a 50mm f/1.4 into your pocket. Of course, the autofocus is slower and there is no IBIS or EVF. But when it comes to the pareto frontier of small size versus full frame image quality, this is it.
Ok that lens does look pretty awesome [1].
And it looks like there are some interesting ultra compact (and affordable) autofocus lenses from Chinese makers available now compared to when I last looked.
Having more compact full frame lenses on offer is an exciting development IMO. Although none of them are stabilized, which makes the lack of IBIS on the FP2 a bit more painful.
[1] https://www.sigma-global.com/en/news/2026/10/23/012375/
Yeah I'm really excited to try this lens - sounds like it'll be optically similar to some film-era 1.4 lenses and they have lots of character. I have a Minolta 50mm f/1.4 I use all the time because it just has a look that I can't get from modern perfect glass.