Thank you for viewing. This is a RAYQUAL PTX645-GFX. It is a high-precision mount adapter for GFX cameras. I have confirmed that the aperture operation works without any problems. I am selling it due to a change in specifications. The following is quoted from the website. ○ Compatible models Camera: Fuji GFX Lens: Pentax 645 ○ Shooting method Camera settings: Manual and aperture priority can be used. Focus is adjusted using the lens's focus ring and aperture ring. ○ Features A light-shielding plate is installed to prevent internal reflections. (It also has the effect of hiding the electronic contacts of the camera) The adapter is designed and manufactured with an emphasis on rigidity and robustness. In addition, a tripod mount that emphasizes strength allows for stable tripod shooting. (The tripod mount cannot be removed) It is made with a precision of 1/100mm in the plated state. It is easy to use with internal reflection prevention processing and surface Teflon processing. Material: Brass, Aluminum Made in Japan (Rayqual) ○ Note: It does not support lenses without an aperture control ring on the lens side (such as the DFA645 series). ○ Compatible models Camera: Fuji GFX Lens: Pentax 645 ○ Shooting method Camera settings: Manual and aperture priority can be used. Focus is adjusted using the lens's focus ring and aperture ring. ○ Features It is made with a precision of 1/100mm in the plated state. It is easy to use with internal reflection prevention processing and surface Teflon processing. Material: Brass, Aluminum Made in Japan (Rayqual) ○ Note: This adapter can be used in manual and aperture priority modes. This adapter allows for infinity focus shooting. It does not support lenses without an aperture control ring on the lens side (such as the DFA645 series). - Brand: RAYQUAL - Model: PTX645-GFX - Country of Manufacture: JAPAN - Shape: Mount Adapter #MountAdapter #GFX #FUJIFILM #Pentax645 #PENTAX #Pentax #Fujifilm #MountAdapter #OldLens #FilmCamera #DigitalCamera #GFX #Rayqual #rayqual #645 #645N #645D #645Z