This FotodioX DLX Adapter Pentax K to FUJIFILM GFX Mountallows a Pentax K-mount autofocus lens lens to be used on a FUJIFILM G-mount GFX camera camera. It is designed to support focusing to infinity and utilizes a brass lens mounting ring to provide a durable, yet lightweight camera-to-lens connection.

To control the amount of light that enters the camera when combined with a Pentax K-mount autofocus lens, an aperture-control ring is built into this DLX Lens Mount Adapter. The control ring couples with the lens's aperture mechanism so that adjustments to brightness as well as depth-of-field can be made. It features clickless stop adjustments that help prevent unwanted noise from being recorded while capturing video with sound.

Pentax K, AF Lens to G-Mount GFX Body    Easy Aperture Control for Video    Enables In-Camera Focus Confirmation    Clickless, Aperture Control Ring    Supports Focusing to Infinity    Brass Lens Mounting Ring

• Allows a Pentax K-mount autofocus lens lens to be used on a FUJIFILM G-mount GFX camera camera
• Attached lens can focus to infinity
• Brass construction and mounting ring provide a lightweight camera-to-lens connection with enhanced durability
• Built-in, aperture-control ring with clickless stop adjustments that help prevent unwanted noise from being recorded while capturing video with sound

Related Questions and Answers

Q: 1. What is the magnification ratio when using macro with this adapter?

A: The magnification ratio for the FotodioX Pentax K Lens to FUJIFILM X-Mount DLX Stretch Adapter will vary depending on the lens being used.

Q: 2. How much macro extension does it provide?

A: When using the FotodioX Pentax K Lens to Sony E-Mount DLX Stretch Adapter, the adapter gives one between 12mm and 20mm extension.

Q: 3. When shooting with a Hasselblad f2.8 lens and this adaptor, is there any loss of light? Is still a true f2.8?

A: The Fotodiox dlx Stretch V-mount to G-mount adapter does not possess any optical elements which cause transmission loss, so you will not see a loss of light when the adapter is in use. In regards to the second part of your question, because the adapter possess a helicoid which alters effective focal length (stretching of shrinking of flange focal distance), the technical answer is that the effective aperture changes based on the focal length used at the time. However, this does not affect the exposure in any truly meaningful way. For all intents and purposes, it stays "a true f/2.8".

Q: 4. Can you use an FE lens if the leaf shutter is locked open?

A: The FotodioX Hasselblad V Lens to FUJIFILM G-Mount GFX DLX Stretch Adapter is listed only by the manufacture as compatible with Hasselblad V mount lenses. FE V mount might work but as well as this adapter is a manual adapter with out any electronic communication.

Q: 5. Does this adapter have the ability to stop the lens down to shooting aperture? Does it move the aperture stopdown lever?

A: The FotodioX Pro TLT ROKR Tilt-Shift Lens Mount Adapter for Pentax 645-Mount Lens to Fujifilm G-Mount GFX Camera cannot control the aperture of the adapted lens. You would need to set the aperture on the lens yourself and use stop down metering.

Q: 6. Does this adapter work with Nikon AF-D lenses (lenses with aperture ring)?

A: Yes the FotodioX Nikon F G-Type Lens to Fujifilm X-Mount DLX Stretch Adapter is also compatible with the AF-D lenses that have an aperture ring already.

Q: 7. does this work with full frame sony a7 without cropping?

A: Tried on 3 different lenses. No cropping.

Q: 8. Does this allow using a "Pentax smc FA 645 200mm f/4 IF Lens" on GFX body with AF?

A: FotodioX Pentax 645 Lens to FUJIFILM G-Mount GFX DLX Stretch Adapter doesn't support autofocus.

Q: 9. How do I not shoot wide open all the time?

A: Since the FotodioX Pro TLT ROKR Tilt-Shift Lens Mount Adapter for Pentax 645-Mount Lens to Fujifilm G-Mount GFX Camera cannot control the aperture, the only lenses that can be stopped down would be lenses with a mechanical aperture ring.

Q: 10. Hello. It is work the autofocus system with this adapter?

A: No, i'm sorry but this adapter is only manual focus.