Ultra-wide 45mm for Pentax 67 medium format — dramatic 22mm equiv wide-angle on 6x7.
The Pentax 67 45mm f/4 is an ultra-wide-angle lens for the Pentax 67 medium format system, providing approximately a 22mm equivalent perspective on the 6x7cm format. This dramatic wide-angle view on medium format creates expansive landscape and architectural images with the extraordinary detail and tonal range that 6x7 negatives deliver.
Optical quality is good with the lens handling the demanding ultra-wide-angle correction for the large 6x7cm format competently. The f/4 aperture reflects the optical challenges of designing ultra-wide optics for medium format. Stopped down to f/8 and beyond, the lens delivers sharp results across the generous negative area.
Build quality is robust Pentax 67 quality with solid metal construction and smooth mechanical operation. The lens is relatively compact considering the ultra-wide coverage it provides for the 6x7 format. The front element is large but the lens accepts standard screw-in filters for creative and protective use.
On the used market, the Pentax 67 45mm f/4 is the widest standard option for 67 system users wanting dramatic wide-angle perspectives. For landscape photographers shooting 6x7 medium format who want the widest possible view, it delivers a perspective that combines ultra-wide coverage with medium format image quality.