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Urth Manual Lens Mount Adapter for Pentax K-Mount Lens to Canon EOS EF/EFs Camera Body

BH #URULMAKEF • MFR #ULMA-K-EF
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Urth Manual Lens Mount Adapter for Pentax K-Mount Lens to Canon EOS EF/EFs Camera Body
Key Features
  • Pentax K-Mount Lens/Canon EF/EFs
  • Manual Operation
  • Precision Machined
  • Made of Hardened Aluminum and Copper
The Manual Lens Mount Adapter for Pentax K-Mount Lens to Canon EOS EF/EFs Mount Camera Body from Urth makes it possible to explore new lens and camera body combinations. It is made of machined aluminum for a snug, light-sealed, and secure connection.
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Urth ULMA-K-EF Overview

The Manual Lens Mount Adapter for Pentax K-Mount Lens to Canon EOS EF/EFs Mount Camera Body from Urth makes it possible to explore new lens and camera body combinations. It is made of machined aluminum for a snug, light-sealed, and secure connection.

Electronic communications and automatic functions are not supported with this adapter, focus and exposure settings may be manually adjusted.

Urth ULMA-K-EF Specs

Item Type
1x Lens Mount Adapter
Camera Compatibility
Canon EF Mount
Lens Compatibility
Pentax K Mount
Electronic Communication
No
Included Shims
Materials
Aluminum
Packaging Info
Package Weight
0.13 lb
Box Dimensions (LxWxH)
3.1 x 3.05 x 1.35"

Urth ULMA-K-EF Reviews

Only works on Canon mirrorless cameras

By Anonymous
Rated 3 out of 5
Date: 2025-07-10

Decent quality kit, but unfortunately doesn't work on Canon DLSR's, as there isn't enough room for the mirror mechanism to open without coming into contact with the rear elements of the Pentax K lens, and it ends up jammed each time.Works fine with Canon R5.

Meh

By Pol
Rated 3 out of 5
Date: 2021-05-27

[This review was collected as part of a promotion.] This is a simple adapter but the button to pull out the lens is too hard and the adapter hurt my hands every time I try to pull out the lens. It's a good product but the systeme to pull out is just bad when you are alone... PS : Warning if you want to use it on a Viltrox EF-M2, the adapter is more hard to couple with the Viltrox. You need to force a little bit more.

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