Olympus just announced the OM-D E-M1 mirrorless camera. Here are specs comparison of Olympus OM-D E-M1, Panasonic Lumix DMC-GX7, Panasonic Lumix DMC-GH3, amd Sony NEX-7.
| Feature | E-M1 | GX7 | GH3 | NEX-7 |
|---|---|---|---|---|
| Sensor Resolution | 16.3 MP | 16.0 MP | 16.1 MP | 24.3 MP |
| Sensor Type | Four Thirds | Four Thirds | Four Thirds | APS-C |
| Sensor Size | 17.3x13mm | 17.3x13mm | 17.3x13mm | 23.5×15.6mm |
| Image Size | 4608 x 3456 | 4592 x 3448 | 4608 x 3456 | 6000 x 4000 |
| Image Processor | TruePic VII | Venus Engine | Venus Engine VII FHD | Bionz |
| In-body Image Stabilizer | Yes | Yes | No | No |
| Viewfinder | Yes | Yes | Yes | Yes |
| Storage Media | SD/SDHC/SDXC | SD/SDHC/SDXC | SD/SDHC/SDXC | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
| Continuous Shooting Speed | 10 FPS | 4.3 FPS | 20, 6, 4 or 2 FPS | 10 FPS |
| Max Shutter Speed | 1/8000 to 60 sec | 1/8000 to 60 sec | 1/4000 to 60 sec | 1/4000 to 30 sec |
| Native ISO Sensitivity | ISO 100-25,600 | ISO 125-25,600 | ISO 200-12,800 | ISO 100-16,000 |
| Autofocus System | 81 points | 23 points | 23 points | 25 points |
| Built-in Flash | No | Yes | Yes | Yes |
| Video Output | H.264 | MPEG-4, AVCHD | MPEG-4, AVCHD, H.264 | MPEG-4, AVCHD |
| Video Resolution | 1920 x 1080 (30p) | 1920 x 1080 (60p, 60i, 50p, 50i, 30p, 24p) | 1920 x 1080 (60, 50, 30, 25 24 fps) | 1920 x 1080 (60, 24 fps) |
| LCD Size | 3″ TFT-LCD | 3″ TFT-LCD | 3″ TFT-LCD | 3″ TFT-LCD |
| LCD Resolution | 1,037,000 dots | 1,040,000 dots | 614,000 dots | 921,000 dots |
| Exposure Compensation | ±5 (at 1/3 EV, 1/2 EV, 1 EV steps) | ±5 (at 1/3 EV steps) | ±5 (at 1/3 EV steps) | ±5 (at 1/3 EV steps) |
| NFC | No | Yes | No | No |
| Wi-Fi | Yes | Yes | Yes | No |
| Battery Life (CIPA) | 350 shots | 350 shots | 540 shots | 430 shots |
| USB Version | 2.0 | 2.0 | 2.0 | 2.0 |
| Dimensions | 130 x 94 x 63 mm | 123 x 71 x 55 mm | 133 x 93 x 82 mm | 120 x 67 x 43 mm |
| Weight | 497g | 402g | 550g | 400g |
| MSRP Price | $1,399.00 | $899.00 | $1,098.00 | $1,098.00 |