Focal Lengths: What I Actually Reach For
Lens choice is one of those decisions that sounds technical but is really about how you want to see. Over time you develop instincts about which arguments you want to make. I shoot APS-C, so all the focal lengths below carry a 1.52x crop factor.
16mm (wide angle) An architectural focal length here: used mostly for capturing buildings, surroundings, and cramped spaces. Also useful to use on a gimbal due to the small size and the fact that sharpness is mostly achievable all around.
35mm (moderate wide angle) This is a working focal length - wide enough to place a subject in their environment, close enough to stay emotionally connected. The slight barrel distortion at the edges isn't a flaw; it gives the frame a sense of depth that flatter lenses lack. But you also have enough separation to achieve shallow depth of field if needed.
50mm (portrait close-up) Often cited as the focal length closest to human vision, which may be why it's both the most natural and the most difficult to make interesting. There's a naturalism to the rendering that longer lenses can't quite replicate.
85mm (telephoto portrait) The wedding lens, the pieces-to-camera lens, the lens that makes faces look the way faces want to look. The compression flatters features; the bokeh is generous; the rendering is soft in a way that feels considered rather than accidental. The practical downside is distance - you need room.
The honest answer to "which focal length?" is always: it depends what you're trying to say. But these four cover most of what I want to say, most of the time.
