Tell us what you take pictures of and what lenses you already have and we can give better answers.
If you have only the kit lenses that come with a crop camera, you have no large max aperture lenses. Large aperture lenses open up bigger to allow more light in so you can shoot in dim light without having to slow the shutter too much, without having to raise ISO which gives ugly grainy photos. Shooting at large apertures also gives shallow depth of field in focus, which is a nice effect that draws attention to just the thing you focus on (because it is in focus), while blurring distracting backgrounds away.
Prime lenses have large apertures. Primes are non-zooming, fixed focal length lenses. Primes have better image quality than zooms of the same price. Primes are cheaper than zooms of equal image quality. Primes are generally at least somewhat smaller and lighter than zooms.
A 50mm f/1.8 or f/1.4 prime is a good walk around lens on a full frame and a good portrait lens on a crop body.
A 35mm prime is a good walk around lens on both full frame and crop cameras.
Scott
Canon 5d mk 4, Canon 6D, EF 70-200mm L f/2.8 IS mk2; EF 16-35 f/2.8 L mk. III; Sigma 35mm f/1.4 "Art" EF 100mm f/2.8L Macro; EF 85mm f/1.8; EF 1.4x extender mk. 3; EF 24-105 f/4 L; EF-S 17-55mm f/2.8 IS; 3x Phottix Mitros+ speedlites
Why do so many people say "FER-tographer"? Do they take "fertographs"?
