“A bag of primes” refers to a zoom lens that is so good it replaces a bunch of non-zoom prime lenses.

This Sigma 24-70mm does just that and, when you think of it, for an outstanding price.

Price aside this is one of the best constant f/2.8 zooms we have used. It is rugged and feels great in operation, but it’s the image quality that really gets us.

Highly recommended and definitely worth a think if you are considering a few primes in this focal range.