Widest Bronica SQ lens — ultra-wide 22mm equiv for 6x6 medium format.
The Bronica Zenzanon-PS 40mm f/4 is a wide-angle lens for the Bronica SQ 6x6cm system providing approximately a 22mm equivalent ultra-wide perspective. This is the widest lens in the SQ system, enabling dramatic wide-angle photography with the square medium format's exceptional detail and tonal richness.
Optical quality handles the demanding ultra-wide correction for 6x6 format well, delivering sharp results at moderate apertures. The built-in leaf shutter provides flash sync at all speeds. The f/4 aperture is standard for medium format wide-angles of this era and provides adequate depth of field.
Build quality is professional Bronica SQ standard with robust metal construction and reliable mechanical operation throughout. The SQ bayonet mount ensures secure attachment. The lens handles well on SQ bodies and provides smooth focus operation for precise manual focusing at wide-angle distances.
On the used market, the Zenzanon-PS 40mm f/4 is essential for SQ users wanting wide-angle coverage. For Bronica SQ landscape and architectural photographers, it provides the widest possible view on the 6x6 format at modest prices and remains the go-to wide-angle for this medium format system.