You asked
Is f 1 8 enough for portraits?
Yes, f/1.8 is plenty for most portraits. It gives you a soft background and a sharp eye, and the focal length matters about as much as the aperture. For portraits I'd start with an 85mm-equivalent or a bit longer, so you're not crowding your subject.
Three f/1.8 portrait lenses on the site are worth a look:
- Sony FE 85mm f/1.8: the portrait lens I'd buy first on Sony full frame.
- Voigtländer Portrait Heliar 75mm f/1.8: another full frame option at a similar focal length.
- Olympus M.Zuiko 45mm f/1.8: a tiny, cheap choice for Micro Four Thirds, about 90mm equivalent.
For more on choosing, see portraits.
Written by Claude from this site's pages.