We sell replacement mounts to use Olympus OM lenses on Pentax cameras.

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Welcome to Leitax, this is our Olympus-OM to Pentax-K page. After several requests from Pentax users, we can offer now this new replacement bayonet to use OM-system Olympus Zuiko lenses on Pentax bodies.

-This conversion is fully reversible and will not damage either the lens or the camera. 
-The Olympus-OM lenses will focus to infinity and will maintain the aperture click stops
-The Pentax cameras will show a  focus confirmation light in the viewfinder.

- One of the holes at the bayonet coincides with the positioning slot, therefore, the spring loaded pin at the camera will work, but the lens can be moved half millimeter to the right or to the left if you force it. This is not a problem when taking pictures, the focus and aperture rings operation will not move the lens.

Please take a look at the instructions on the left, and don't hesitate to ask me any doubt with the conversion.

Zuiko on Pentax, no adapter

Questions?     info@leitax.com

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At this moment, we can offer a limited quantity of instructions. I think the lenses not included in the instructions will have no problem to use our Zuiko-Pentax mount, but I cannot be sure yet.

Caution!    The Zuiko-OM 50/1.8 , 28/2.8 and 40/2.0  may have a different type of mount made in two pieces  In this case, they won't be compatible with the Leitax mount.

Caution! The Zuiko-OM 135/3.5 can use the standard Leitax mount only together with a special spacer and longer screws.

I have the K20D, but I think the settings are similar on other models: in the Custom Setting menu, go to "Using aperture ring" and set "permitted". This way, your camera will work and meter in Av mode with adapted lenses.

For my calculations, all the lenses checked in my instructions will not hit the mirror of a Pentax camera.

The orange mark at our Leitax mount is the exact scale center of the Zuiko-OM lenses. And it can be used as a rough guide to mount  the lenses on Pentax cameras, as it is very near of the red dot position.
Zuiko Olympus OM on Pentax K mount, no adapter

Now you can order the Olympus Zuiko OM-Pentax bayonet here.
- The registered mail service is reliable but the delivery time is not very fast or even regular. If you need the Leitax mounts fast or you have a deadline I'd recommend the courier option.

Zuiko-Pentax bayonet, no adapter   
This is our Pentax K mount for Olympus OM lenses.

Also included a piece of spring and an useful needle with hook to install it.

62 Euro
Nikon cap for Olympus You may need a generic Pentax-K rear lens cap. Out of Stock
2 Euro
Techcap for Olympus But, if you want the best, I can offer now the OP/TECH USA Pentax-K cap.

-It has a rubber O-Ring that seals the lens from dust and moisture.

-The O-ring also forms tight friction, it will avoid losing the cap.

-It covers the entire bayonet diameter, providing more protection against blows and scratches.
Out of Stock
9 Euro

With certain models, we'll have to manipulate inside the lens, it's not a good place for something metallic. With this plastic tool I don't make any scratches in the Zuiko lenses.
3 Euro

I use this model for the Phillips screws in the Olympus OM lenses, it is industrial grade quality made by Irazola, and the design is very good, you can push and turn it firmly with the rotary end and the rubber finish.

9 Euro
bayonet replacement, no adapter If you don't feel confident after reading the instructions, please send your Olympus OM lens to me.

Provided your lens is in the list, we can install a  Pentax bayonet on it.

Notice this price doesn't include the bayonet nor shipping.
50 Euro
Extra shipping cost for fast courier.
I would need your phone number for the courier shipping form.


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- Due to strict security, the postal service to the US can take several weeks, US customers please consider the courier option.
- Handling & Shipping cost for any quantity of items and to all countries: 10 Euros. It will be added automatically at the Paypal checkout.