Ok so for ur $300–$600 zone, I’d go two-lens mindset. For headshots: Sony FE 85mm f/1.8—fast AF, Eye AF actually behaves, sharp wide open, bokeh’s clean. For “indoors + family”: Sigma 50mm f/2 DG DN Contemporary (or Samyang AF 50mm f/1.4 FE II if you want more blur) — 50mm is way more usable in tight spaces. If you only buy one, I think 85mm wins for paid work, honestly.

Ok so quick backdrop: 50mm is safer indoors/family stuff, 85mm is safer for paid headshots (flattering + more blur). Why it matters is AF/Eye AF reliability… missed focus is literally the only “unsafe” choice here lol.

- If you can swing it used: Sony FE 85mm f/1.8 — boring in the best way, fast AF, Eye AF just works.
- Want flexible + cheap-ish: Sigma 50mm f/2 DG DN Contemporary (Sony E-mount) — sharp, good AF, nice size.
- Tight budget 50: Sony FE 50mm f/1.8 but tbh it can hunt/feel sketchy in low light.

Id start 85, then add a 50 later. gl!

TL;DR: I tried 50 vs 85 and ended up happiest w/ Sony FE 85mm f/1.8—Eye AF actually stuck; my cheap 50 hunted indoors and bokeh got kinda busy. No complaints.

Totally agree with the point about sticking to native glass for the long haul. I've been shooting with the same kit for years and having that seamless compatibility through every firmware update is just a weight off your shoulders. Honestly tho, instead of us just listing specs, you should probably just hop on YouTube and search for Sony 85mm vs 50mm portrait comparison or look through the Sony Alpha subreddit. There are some really great side-by-side videos that show the actual AF tracking and bokeh transitions in real-time, which is way more helpful than reading about it here. I saw a super thorough breakdown a while back that basically settled the debate for me... just look for the top results and you'll see what I mean.

Wait really?? Thats actually super helpful. I always thought it was the other way around.

For your situation, I’d suggest Sony FE 85mm f/1.8 vs Sigma 85mm f/1.4 DG DN Art for Sony E-mount vs Samyang AF 85mm f/1.4 FE II for Sony E-mount — IMO the Sony’s the safest: fast, sharp, and Eye AF is *actually* reliable. 50mm (like Sony FE 50mm f/1.8) is flexible indoors but bokeh can get kinda busy and AF is… yeah, not my fave. I keep coming back to 85/1.8 for paid headshots. cheers

Same here!

Honestly, I totally agree with the sentiment that autofocus reliability is the most important factor here. I've been shooting Sony for three or four years now, and looking at it from a long-term perspective, there's a lot to be said for playing it safe: * Stick with the native brand lenses if you can. Basically, ur buying into a system where the hardware and software are designed together. I've noticed that whenever there’s a major camera firmware update, the official glass stays snappy while some of my off-brand stuff starts acting a bit weird or hunts more.
* Think about the resale value. If you decide to go pro or just want a different focal length in two years, the first-party stuff holds its price way better. It’s basically a safer investment for ur money.
* Build quality matters for the long haul. I’ve found that the official primes tend to handle the "family and friends" environment—where things might get bumped—a lot better than some of the super budget third-party options. Just get an official prime within ur budget and you'll be set. It’s less about the specific focal length and more about knowing the lens won't let you down during a session.

Facts.