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Best wide angle lens for the nikon d610?

For the Nikon D610, a full frame body, lenses frame exactly as marked, so any wide lens in the catalogue will give you its true field of view.

If you want one zoom that covers the wide end, I'd start with the Nikon AF-S 14-24mm f/2.8G ED or the Sigma 14-24mm f/2.8 DG HSM Art. Both keep a constant f/2.8 across the range, so the exposure stays steady as you zoom. For a single prime, the Sigma 20mm f/1.4 DG HSM Art gives you a fast, bright wide view for low light. If you want something lighter and cheaper, the Nikon AF-S 20mm f/1.8G ED is a sensible everyday pick.

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