Released August 2011. This lens is for DX format (24mm x 16mm). It is designed specifically for APS-C digital SLR cameras (DX format/APS-C equivalent). It cannot be used with digital SLR cameras with image sensors larger than the DX format/APS-C equivalent, or with 35mm film (silver halide) SLR cameras. This micro lens is perfect for close-ups, portraits, landscapes, and more. Mount: Nikon F mount, DX format. Focal length: 40mm (equivalent to 60mm in 35mm format). Maximum aperture: f/2.8. Filter diameter: 52mm. [AFSDXMC4028G] AFSDXMC4028G Released August 2011. This 40mm focal length micro lens produces attractive soft bokeh. This 40mm focal length (equivalent to the angle of view of a 60mm lens in 35mm format) and f/2.8 maximum aperture micro lens is compatible with the DX format. Enjoy close-up photography with ease, taking advantage of the high resolution and large, beautiful bokeh. The angle of view is close to that of a standard lens, adding a unique touch to portraits, landscapes, and other snapshots. Enjoy a whole new world of life-size photography. The minimum focusing distance of 0.163m allows you to get as close as possible to your subject, enabling dynamic close-up photography at up to life-size. The natural, large, soft bokeh unique to micro lenses is a unique feature, while the sharpness of the focused area is outstanding. Equipped with SWM for quiet AF. The SWM (Ultrasonic Motor) delivers quiet and smooth AF. Use it with confidence even in situations where the lens drive noise during AF is a concern, such as when taking close-up shots of a sleeping child. Two focus modes are also available: "M/A" and "M." "M/A" allows you to instantly switch from AF to manual focus, making it convenient for fine-tuning the focus during close-up photography. Recommended for portrait photography that takes advantage of the large background blur. The angle of view, which is close to that of a standard lens and equivalent to a 60mm lens (35mm equivalent), is recommended not only for close-up photography but also for portrait photography. The excellent resolution at the highly sharp focal plane delicately reproduces the texture of a person's hair and skin. The contrast with the large, soft blur of the background emphasizes the subject in a natural image. ■ Specifications ■ Focal Length: 40mm Maximum Aperture Ratio: 1:2.8 Lens Construction: 7 Groups, 9 Elements Angle of View: 38°50' (DX Format Digital SLR Camera) FX Format/35mm Equivalent: Equivalent to the angle of view of a 60mm lens Shooting Distance Information: Shooting distance information can be output to the camera Focusing: Autofocus with ultrasonic motor, manual focus possible Shooting Distance Scale: ∞ - 0.163m Minimum Shooting Distance: 0.163m (1x magnification) Maximum Shooting Magnification: 1.00x Number of Aperture Blades: 7 (Circular aperture) Aperture: Automatic Maximum Aperture: f/2.8 Minimum Aperture: f/22 Metering: Full aperture metering Focus Limit Switch: Two-stage switchable between FULL (∞-0.163m) and ∞-0.2m Attachment Size (Filter Size): 52mm (P=0.75mm) Mount Adapter FT1 Compatibility: AF drive Dimensions: Approx. 68.5mm (maximum diameter) x 64.5mm (from lens mount reference plane to lens tip) Weight: Approx. 235g * DX format lens (24mm x 16mm) * This lens is for use exclusively with APS-C digital SLR cameras (DX format/APS-C size equivalent). It cannot be used with digital SLR cameras with image sensors larger than the DX format/APS-C size equivalent or with 35mm film (silver halide) SLR cameras. Manufacturer's Warranty: 1 year