Full-frame telephoto macro prime lens for DSLR cameras.
The Tamron SP AF 180mm f/3.5 Di Macro is a full-frame 1:1 macro telephoto prime for Canon EF mount. The 180mm focal length provides an extended working distance at 1:1 magnification compared to 100mm macro lenses — particularly useful for macro photography of insects and small wildlife that startle at close approach. Di indicates full-frame coverage.
180mm focal length, f/3.5 maximum aperture, 1:1 macro capability, Di (full-frame), LD glass elements, internal focusing, Canon EF mount.
The working distance advantage of a 180mm macro over a 100mm macro is significant for wildlife macro photography — at 1:1 magnification on a 180mm, the subject distance is approximately 46cm rather than 26cm for a 100mm macro. This reduces subject disturbance and provides more space for lighting. Good optical quality from Tamron's SP range.
Test macro focus at 1:1 and confirm sharpness. Check that IF mechanism keeps front element stationary during focus. Inspect for fungus, haze, and coating condition. Confirm Canon EF mount engagement. Test AF accuracy.