The 12-24mm f/4-5.6 ED and 45mm f/1.8 are compatible with Samsung’s i-Function button.
Specs, as supplied by Samsung UK:
Samsung NX Lens 12-24mm F4-5.6 ED
Focal Length 12 – 24mm (equivalent to 18.5-37mm in 35mm format)
Elements in Groups 10 elements in 8 groups (2 Aspherical lens, 1 Extra-low Dispersion lens)
Angle of View 99.0°- 60.7°
Aperture F4 – 5.6 (Min. F22), (Number of Blades : 7 , Circular Aperture Diaphragm)
OIS No
Minimum Focus Distance 0.24m
Maximum Magnification Approx.0.14X
i Scene Backlight, Landscape, Sunset, Dawn, Beach&Snow, Night
Lens Hood Yes (Included)
Filter Size 58mm
Mount Type Samsung NX Mount
Dimension (DxL) 63.5 x 65.5mm
Weight 208g (without hood)
Samsung NX Lens 45mm f/1.8
Focal Length 45mm (equivalent to 69.3mm in 35mm format)
Elements in Groups 7 elements in 6 groups
Angle of View 34.7°
Aperture F1.8 (Min. F22), (Number of Blades : 9 , Circular Aperture Diaphragm)
OIS No
Minimum Focus Distance 0.45m
Maximum Magnification Approx. 0.13X
i Scene Night, Portrait, Beauty shot, Children, Backlight, Sports
Lens Hood Yes (Included)
Filter Size 43mm
Mount Type Samsung NX Mount
Dimension (DxL) 62.0 x 44.5mm
Weight 115g (without hood)