Weight (inc. batteries) 505 g (1.11 lb / 17.81 oz) Dimensions 124 x 96 x 75 mm (4.88 x 3.78 x 2.95 ″) Other features; Orientation sensor Yes
Features Nikon's 14.2- megapixel Nikon DX format CMOS sensor with 12 Bit Resolution. Nikon EXPEED 2 image processor. Active D-Lighting. Automatic chromatic aberration correction. Sensor cleaning and airflow control system. 3.0-inch 230,000-dot resolution fixed TFT LCD Continuous Drive up to 3 frames per second. Live view mode.But the 70-300 f/4-f/5.6 is listed as an AF lens, meaning that it needs a camera with a motor for autofocus. So that lens won't autofocus with a D3100. But all the exposure modes will work. The newer 70-300 f/4.5-f/5.6 AF-S lens will work with all Nikon DSLR's and is a much better lens besides. -- Leonard Migliore.
Weight: 710g (25 oz) Canon 705g (24.9 oz) Nikon Aperture Blades: 7 (circular diaphragm) Minimum Aperture: F/22-40: Image Stabilization Performance: 2.5 Stops (CIPA Standards Compliant) For Canon: EOS-80D is used / For Nikon: D7200 is used: Standard Accessories: Flower-shaped lens hood, Lens caps: Compatible Mounts: Canon, Nikon The final lens on our list is our Sigma Prime lens for Nikon d3100 cameras, the Sigma 50mm F1.4 Lens. Although coming from Sigma, this is a third party lens for Nikon d3100 cameras it offers excellent quality and the lens has an amazing reputation within the photography community . Lens mount: Nikon F: Focal length mult. 1.5 ×: Articulated LCD: Fixed: Screen size: 3 ″ Screen dots: 230,000: Max shutter speed: 1/4000 sec: Format: MPEG-4: Storage types: SD/SDHC/SDXC: USB: USB 2.0 (480 Mbit/sec) Weight (inc. batteries) 505 g (1.11 lb / 17.81 oz) Dimensions: 124 x 96 x 75 mm (4.88 x 3.78 x 2.95 ″) GPS: Optional IgNMz3.