So I just grabbed a used A7III and im literally so excited to finally get into full frame but wow my bank account is hurting already lol. I need one solid lens for a wedding im shooting for a friend in like two weeks so time is tight. My budget is capped at 600 max. I've been looking at the Tamron 28-75mm G1 since it covers everything but then I saw the Sony 85mm f1.8 and those portraits look insane. My logic was that the zoom is safer but the 85mm is sharper for the ceremony... or maybe the Samyang 35mm 1.8? I keep switching my cart every hour honestly. Which one is the better investment for a broke beginner?