Broaden your horizons. Equivalent to approximately a 28mm lens in the 35mm format the 45 f2.8 SMC A gives your Pentax 645 a new perspective on shooting.
Pentax's exclusive seven-layer Super-Multi-Coating (SMC) reduces the reflection and flare ratio to an amazingly low 0.2% per lens surface for bright, clear, high resolution images that will look good from any angle.
Minimum aperture f22
Minimum focusing distance 1.5 ft.
Filter size 67mm