The issue with Sony's E-Mount cameras is that the lens selection has been less than stellar for a long time. Since it's all relatively new, you just aren't going to get close to the vast, vast library of lenses amassed for Canon and Nikon shooters.
Yes, there are adapters which give you access to an entire world of lens options, and a great many Sony photographers go that route... but I'm not one of them. For the past couple years I've just limped along with whatever offerings Sony deemed fit to send our way. But, in recent months, their offerings have improved immensely. Yeah, there are some glaring holes in their lineup that may never be filled... but, for most people, there are lenses to fit whatever comes your way.
I own two Sony FE (full sensor) lenses. An absurdly expensive (for what you get) $800 Carl Zeiss Sonnar 35mm f/2.8... and a $1,500 70-200mm f/4 G zoom. I also own a 10-18mm f/4 wide angle zoom that is not full-frame, but the 15-16mm span on this lens works perfectly fine on full-frame cameras, so I still use it.
In addition to those lenses, I've rented the Carl Zeiss Sonnar 55mm f/1.8 lens (stunning clarity and sharpness... but a little crazy at $1000) and the Carl Zeiss Distagon 35mm f/1.4 lens (absolutely amazing, but a bit heavy and bulky for 35mm at $1600).
My newest lens (which was purchased with the camera) is the Sony FE 90mm f/2.8 G. Just like long-range zooms, macro photography has been an area that I haven't explored much, and I figured now was the time. The lens itself is pretty spectacular and a lot of fun to shoot with.
My next lens will be the Sony FE 24-70mm f/2.8 GM zoom. It's insanely expensive at $2,200, but it bridges the gap between my 10-18mm to 70-200mm lenses perfectly. It's also gotten rave reviews from early testers which claim it's worth every penny. And that will probably be my last lens for a while. The only thing that might change my mind is one of the upcoming Voigtlander Ultra-Wides (in 10mm, 12mm, and 15mm flavors), which are smaller and lighter than my ultra-wide zoom and are full-frame lenses. With the light sensitivity and 42MP sensor of my a7R Mark II, the 12mm f/5.6 would probably be about perfect... assuming I could live with a manual focus lens. I'm not entirely sure about that.
What have I actually been able to shoot with these things?
I'm saving that for tomorrow.