Tamron's ultra-wide prime for Nikon F — the SP 14mm f/2.8 for dramatic wide-angle coverage.
The Tamron SP AF 14mm f/2.8 Aspherical IF is a full-frame ultra-wide prime for Nikon F mount. At 14mm, it provides a dramatic 114-degree field of view on full frame. Released in 1999, it was one of the earliest affordable 14mm AF primes. The SP designation indicates Tamron's premium build tier with aspherical elements for optical correction.
Optical performance is decent for the era. Sharpness is respectable in the centre and acceptable at the edges when stopped down. The aspherical element helps control the extreme wide-angle aberrations. Distortion is present but manageable. The f/2.8 speed enables astrophotography and low-light wide-angle work. IF design prevents front element rotation.
Nikon F mount. The bulbous front element prevents standard filter use — rear gel filter is the only option. Weight is approximately 570 grams. Build quality is solid SP professional tier. No image stabilisation. The screw-drive AF requires a body-mounted motor. The extremely wide 14mm perspective creates dramatic images but is challenging to compose effectively.
Available at low used prices. Check the bulbous front element for damage and AF accuracy. Superseded by the Samyang 14mm f/2.8 which offers similar optics at lower cost without AF. An early AF ultra-wide option for Nikon shooters. The Samyang alternative is cheaper; the Sigma 14mm f/1.8 Art is dramatically superior.