COMPATIBILITY. Compatible with Fujifilm X-T20 X-T10 X-T3 X-T2 X-PRO2 X-PRO1 X100F X100T, X100S, X100, X30, X20, X10, X-E2S, X-E3, X-E2 X-E1 STX-2; Compatible with Canon New F-1 / F-1 / AE-1 (FD mount), Compatible with Leica M9, M8, M7, M6, M3, M2, M1, M-E M-P, M9-P, M-A, M-Monochrom / M Type 240; Compatible with Nikon Df, M2, F3; Compatible with Minolta XD7 / Minolta SR-7 / Rollei (LM mount) / Olympus OM-1 / Hasselblad 503CW. UNIVERSAL. Our soft shutter release buttons are compatible with cameras that have the standard threaded shutter release socket. The buttons are also great with cameras that connect with mechanical shutter release cables. SMART DESIGNS. This concave-shaped, brass, soft shutter release button adds comfort and the ability to use slower shutter speeds with improved sharpness. Concave surface diameter: 11mm. Thread size: ¼ in. Note: Gold also comes with a grooved edge for easier grip. EASY TO INSTALL. Simply screw it onto the threaded shutter release socket of your camera. The package also includes anti-slip rubber O-rings to ensure a tight fit on Fujifilm X series cameras, but not compatible with Sony RX1 & RX10 series cameras. STYLISH & PERSONAL. Give your camera a touch of your personal style. These shutter buttons are available in these colors: Red, Black, Gray, Silver, Gold (available in smooth or ridged), Dark Red, Orange, White, Green, Yellow, Wood Brown, and Grooved Gold. Foto&Tech’s soft release buttons are made of solid brass with a concave surface. This allows an easy, manual press at the top of your camera. It comes with 2 pieces of soft metal shutter release button. To install, simply attach the soft release button onto the threaded shutter release socket of your camera. After locking it in, enjoy clicking away with our soft easy shutter release buttons. Besides the shutter release buttons, it comes with rubber O-rings to fit other cameras, specifically compatible with Fujifilm X series camera. For other brands that do not need the rubber O-ring, you can add a small piece of Teflon Thread seal tape (not included) on the button screw. It will keep the shutter button to stay still on the camera. Note: It also fits other cameras with a standard threaded shutter release socket which is designed by the camera manufacturers to accept a mechanical shutter release cable. Compatible with Fujifilm X-T3 / X-T2 / X-T20 / X-T10 / X-PRO2 / X-PRO1 / X100F / X100T / X100S / X100 / X30 / X20 / X10 / X-E3 / X-E2S / X-E2 / X-E1 / STX-2. Compatible with Leica M9 / M8 / M7 / M6 / M3 / M2 / M1 / M-E / M-P / M9-P / M-A / M-Monochrom / M Type 240. Compatible with Canon New F-1 / F-1 / AE-1 (FD mount). Nikon: Df / M2 / F3. Sony: DSC-RX1R II / DSC-RX10 IV / DSC-RX10 III / DSC-RX10 II / DSC-RX10. Compatible with Minolta XD7 / Minolta SR-7 / Rollei (LM mount) / Olympus OM-1 / Hasselblad 503CW. SpecificationsConcave surface diameter: 11mmThread size: ¼ inAvailable Colors: Comes in Red, Black, Gray, Silver, Gold, Dark Red, Orange, White, Green, Yellow, Wood Brown, Grooved Gold.Package includes: 2 x Concave Surface Shutter Release Button, 2 x Rubber O-Rings