| key specs |
| Camera Type | DSLR Camera | Digital Camera |
| Effective Pixels | 20.1 MP | 14.2 MP |
| Sensor Type | CMOS | CMOS |
| Display Size | 2.7 inch | 3.5 inch |
| Battery Type | Lithium ion | Lithium ion |
| Touchscreen | No | - |
| general |
| Brand | Sony | Nikon |
| Model | SLT A58M 20.1MP DSLR Camera | D3100 14.2MP Digital Camera |
| Model Name | SLT A58M | D3100 |
| Model Number | Alpha SLT-A58M | - |
| Color | Black | Black |
| SLR Variant | Body Only | - |
| Type | DSLR Camera | Digital Camera |
| Effective Pixels | 20.1 MP | 14.2 MP |
| Tripod Socket | Yes | Yes |
| Dimensions(WxHxD) | 95.5 x 128.6 x 77.7 mm | 33.8 x 25.8 x 17 cm |
| Weight | 492 GM | - |
| Face Detection | Yes | Yes |
| Temperature | 0 to 40 | 0 to 40 |
| Ports | Type C, Mini HDMI | - |
| Lens Attachment | - | Body Only |
| sensor features |
| Sensor Type | CMOS | CMOS |
| Sensor Size | 23.2 x 15.4 mm | - |
| ISO Rating | ISO 100 - 16000 | ISO 100 -3200 |
| Maximum ISO | - | 3200 ISO |
| Maximum FPS | - | 3 |
| Sensor Technology | - | CMOS |
| lens features |
| Lens Mount | Sony A-mount Lens, Minolta / Konica Lens | - |
| Manual Focus | Yes | Yes |
| Color Filter | Primary RGB Color Filter | - |
| Dust Reduction | Yes | - |
| viewfinder features |
| View Finder | Yes | Yes |
| View Finder Type | Electronic Viewfinder | - |
| Other Viewfinder Features | Electronic Viewfinder Color, Xtra Fine | - |
| focus features |
| Auto Focus | Yes | Yes |
| White Balancing | Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent, Flash, Color Temperature, Color Filter, Custom | Auto (TTL white-balance with 420-pixel RGB sensor) Incandescent Fluorescent Direct sunlight Flash Cloudy Shade White balance preset |
| Other Focus Features | TTL Phase-detection System | - |
| shutter features |
| Shutter Speed | 1/4000 sec | - |
| Self-timer | Yes | Yes |
| Continuous Shots | Yes, 5 fps H, 2.5 fps L | Continuous shooting mode Approx. 3fps |
| flash features |
| Built-in Flash | Yes | Yes |
| External Flash | Yes | Yes |
| Flash Modes | Autoflash, Fill-flash, Slow Sync, Rear Flash Sync, Red-eye Reduction | Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain |
| image features |
| Image Format | JPEG, DCF 2.0, EXIF 2.3, MPF, RAW Sony ARW 2.3, RAW JPEG | NEF (12 bit compressed RAW) JPEG (Baseline-compliant) |
| Aspect Ratio | 32, 169 | - |
| Red Eye Reduction | - | Yes |
| Image Stabilizer | - | Yes |
| Image Sizing | - | 4608 x 3072 (L) |
| Picture Angle | - | Approx 1.5x lens focal length |
| display features |
| Display Size | 2.7 inch | 3.5 inch |
| Touch Screen | No | - |
| LCD Display Image Resolution | - | 230000 dots |
| connectivity features |
| Wifi | No | No |
| GPS | - | Yes |
| storage and power features |
| Battery Type | Lithium ion | Lithium ion |
| Upgradable Memory | - | Yes |
| Card Type | - | SD / SDHC / SDXC |
| Power Supply | - | EH-5a AC Adapter (Available Separately; Requires Optional EP-5A Power Connector) |
| audio and video features |
| Video Resolution | 1920 x 1080 | - |
| Video Format | AVCHD,MP4, MPEG-4 AVC / H.264 | MOV movie (H.264/MPEG-4 compression format with monaural sound) |
| modes and functions features |
| Shooting Modes | Portrait, Landscape, Macro, Sports Action, Sunset, Night Portrait, Night Scene, Hand-held Twilight | Single frame shooting mode, Continuous shooting mode approx. 3fps, Self-timer mode, Quiet Shutter Release |
| Delete Function | - | Yes |