Lens Mount Adapter Pixco for Canon EF lens to Pentax K camera mount (EF→PK)

The Lens Mount Adapter Pixco for Canon EF lens to Pentax K camera mount (EF→PK) is a mechanical adapter that enables Canon EF-mount lenses to be attached to Pentax K (PK) camera bodies. It provides a secure physical connection while preserving the original focal length and mechanical aperture control of the lens. The adapter is designed for photographers who wish to use Canon EF glass on Pentax bodies for portrait, landscape, travel, or experimental lens combinations without electronic communication between lens and camera.

Advantages

This Pixco adapter offers a robust metal construction and precision mounting surfaces to ensure stable lens alignment and repeatable fit. By maintaining the lens’s optical characteristics such as focal length and native aperture, the adapter allows full use of the lens’s depth-of-field and bokeh properties. The simple mechanical design makes it durable and reliable, with an easy-to-operate locking mechanism for secure attachment and detachment.

Suitable for

• Photographers using Canon EF lenses on Pentax K camera bodies
• Portrait and landscape photography where specific EF optics are preferred
• Adaptation experiments combining different lens designs with Pentax bodies
• Manual-focus work and creative projects requiring manual aperture control

Key specifications

• Mount conversion: Canon EF lens to Pentax K (PK) camera mount
• Construction material: metal alloy with matte finish for durability
• Mechanical coupling: physical flange adapter without electronic contacts
• Optical characteristics: preserves focal length and native aperture of attached lens
• Compatibility: designed for full-frame and APS-C EF-mount lenses on PK bodies
• Locking mechanism: manual bayonet-style lock for secure attachment

How to use

Attach the adapter to the Canon EF lens by aligning the lens mount index and turning until the adapter locks into place. Then align the adapter with the Pentax K camera mount and rotate until the adapter clicks securely. Because the adapter does not provide electronic communication, set focus and aperture manually on the lens if applicable. Check flange distance alignment and perform test shots to confirm focus accuracy before critical use.

Usage recommendations

For best results, use lenses that allow manual aperture control or have visible aperture rings. When using on cameras with autofocus that rely on electronic signals, be aware that autofocus and electronic aperture control will not function; rely on manual focusing techniques and, if available, camera focus aids such as focus peaking or magnification. Store the adapter in a dry, dust-free environment when not in use to maintain mounting surfaces and locking reliability.