Premium portrait lenses usually offer apertures of around f/1.4 and sit at prices around $1,500 to $2,500. If you just want a portrait-length lens without ultra-narrow depth of field or the high price tag such lenses come with, one with an aperture like f/2 or f/2.8 could be a better choice. Sigma's new 90mm f/2.8 DG DN Contemporary lens seeks to fill that need at an affordable price, and this great video review takes a look at the image quality and performance you can expect from it in practice.