Pentax's WR macro — the D FA 100mm f/2.8 with enhanced weather resistance for outdoor macro.
The Pentax SMC D FA 100mm f/2.8 WR Macro is the weather-resistant version of Pentax's full-frame macro lens (standard version ID 3868). The WR designation adds enhanced weather sealing for outdoor macro work in adverse conditions. True 1:1 magnification with full-frame D FA coverage. Combined with Pentax body SR for stabilised handheld macro.
Optical performance is the same excellent quality as the standard version. Macro sharpness is outstanding. Flat-field correction. The WR weather sealing adds genuine practical value for outdoor macro photographers who encounter rain, mist, and dust. The 100mm provides comfortable working distance. Benefits from Pentax in-body SR.
Pentax K mount, full-frame (D FA). Filter thread is 49mm. Weight is approximately 340 grams — compact. Build quality includes WR weather sealing — dust, splash, and freeze resistance. Screw-drive AF. The WR version is preferred over the non-WR for outdoor use. Compatible with all Pentax K-mount bodies.
Available at moderate prices — slight premium over non-WR version. Check weather seals and AF. The WR weather sealing justifies the premium for outdoor macro work. Paired with a WR Pentax body, it creates a fully weather-sealed macro kit. One of the most practical macro lenses in the Pentax system.