Samsung 's 20mm f/2.8 Pancake Lens for NX10 / NX100 is a small (1' deep with a 2.44' diameter), lightweight (3.13 oz/89 g) 'pancake' lens, equivalent to 30.2mm in the 35mm format, designed for the NX10 and NX100 cameras. It has an updated Graphic User Interface (GUI) to support the i-Function lens technology, which allows you to manually select and adjust shutter speed, aperture value, exposure value, ISO sensitivity, and white balance on the lens. It also includes Lens Distortion Compensation (LDC) for reduced image distortion across the NX model range for all camera users. Small, lightweight wide-angle pancake lens 20mm lens is equivalent to 30.2mm in 35mm format For the NX 10 and NX100 Samsung cameras This i-Function lens allows you to manually select and adjust shutter speed, aperture value, exposure value, ISO sensitivity, and white balance on the lens. 90 Day Warranty Included with your Open Box Purchase. You are Covered!