| key specs |
| Camera Type | DSLR Camera | DSLR Camera |
| Effective Pixels | 12.3 MP | 18 MP |
| Sensor Type | MOS | CMOS |
| Display Type | LCD | TFT |
| Display Size | 3 inch | 3 inch |
| Battery Type | Lithium ion | Lithium ion |
| Touchscreen | - | Yes |
| general |
| Brand | Olympus | Canon |
| Model | Pen E 12.3MP DSLR Camera | EOS Rebel T4i 18MP DSLR Camera |
| Model Name | Pen E | EOS Rebel T4i |
| Model Number | E-PM1 | T4i |
| Series | Pen | EOS Rebel |
| Color | Silver & Black | Black |
| Type | DSLR Camera | DSLR Camera |
| Effective Pixels | 12.3 MP | 18 MP |
| Dimensions(WxHxD) | 109.5 x 63.7 x 34 mm | 133.1 x 99.8 x 78.8 mm |
| Weight | 265 GM | 575 GM |
| Wide Angle | Yes | - |
| Temperature | 0 to 40 | 0 to 40 |
| Tripod Socket | - | Yes |
| Lens Attachment | - | Body Only |
| sensor features |
| Sensor Type | MOS | CMOS |
| Sensor Size | 33.86 mm | 23.5 x 15.6 mm |
| ISO Rating | ISO 200 - 12800 | ISO 100 - 6400 |
| Maximum ISO | 12800 ISO | 12800 ISO |
| Maximum FPS | 5.5 | 5 |
| Sensor Technology | High Speed Live MOS | CMOS |
| lens features |
| Lens Type | Zoom Lens | - |
| Lens Construction | 8 Elements in 7 Groups | - |
| Focal Length | 14 mm - 42 mm 35 mm Equivalent to 28 - 84 mm | 18 - 55 mm |
| Optical Zoom | 3x | - |
| Aperture Range | F3.5 - F5.6 | - |
| Color Filter | Primary RGB Color Filter | Primary RGB Color Filter |
| focus features |
| Focus Mode | Auto, Manual | Auto, Manual |
| Auto Focus | Yes | Yes |
| Metering Modes | TTL 324 Zones Multi-pattern, ESP Light Metering, Spot Metering, Centre Weighted Metering | 63 Zone TTL Full-aperture Metering, Evaluative Metering, Partial Metering, Spot Metering, Center Weighted Average Metering |
| White Balancing | Auto, Preset Daylight, Lamp, Fluorescent, Flash, Cloudy, Shade, Underwater WB | Auto, Preset Daylight, Shade, Cloudy, Tungsten Light, White Fluorescent Light, Flash, Custom White Balance Correction and White Balance Bracketing |
| Other Focus Features | TTL Contrast Detection | - |
| shutter features |
| Shutter Speed | 1/4000 sec | 1/4000 sec |
| Self-timer | Yes | Yes |
| flash features |
| Built-in Flash | Yes | Yes |
| External Flash | Yes | Yes |
| Flash Modes | Auto, Manual Full, 1/4, 1/16, 1/64, Red-eye Reduction, Slow Sync with Red-eye Reduction, Slow Sync, Slow Sync 2nd Curtain, Fill-in, Off | Auto, Manual Flash, Integrated Speedlite Transmitter |
| image features |
| Image Format | RAW, JPEG, RAW+JPEG, MPO 3D Still | JPEG, RAW, RAW JPEG, DCF, DPOF 1.1 |
| Aspect Ratio | 43, 32, 169, 66, 34 | 169, 32, 43 |
| Red Eye Reduction | Yes | - |
| Image Stabilizer | Yes | - |
| Image Sizing | 4032 x 3024 | 5184 x 3456 L |
| Still Image Size | 4032 x 3024 | 3456 x 2304 M, 2592 x 1728 S 1, 1920 x 1280 S 2, 720 x 480 S 3, 5184 x 3456 RAW |
| display features |
| Display Type | LCD | TFT |
| Display Size | 3 inch | 3 inch |
| Display Resolution | 460,000 dots | 1040000 dots |
| LCD Display | LCD, Anti-reflection Coating | TFT LCD |
| LCD Display Image Resolution | 460000 dots | 1040000 dots |
| LCD Display Video Resolution | 1920 x 1080 | 1920 x 1080 |
| Touch Screen | - | Yes |
| connectivity features |
| HDMI | Yes | Yes |
| USB | Yes | Yes |
| GPS | - | Yes |
| Wifi | - | No |
| storage and power features |
| Upgradable Memory | Yes | Yes |
| Card Type | SD / SDHC / SDXC / UHS-I | SD / SDHC / SDXC / Compatible with UHS-I |
| Battery Type | Lithium ion | Lithium ion |
| Power Supply | - | AC Adapter Kit ACK-E8 |
| Batteries Included | - | Yes |
| audio and video features |
| Microphone | Stereo | Stereo |
| Audio Features | Dolby Digital, WAV | Linear PCM |
| Video Format | AVCHD, AVI Motion JPEG | MOV, MPEG-4 AVC / H.264 |
| Audio Video Interface | Video Output NTSC, PAL | Audio / Video Output NTSC, PAL |
| modes and functions features |
| HD Support | Yes | Yes |
| Shooting Modes | Portrait, e-Portrait, Landscape, Landscape with Portrait, Macro, Sport, Night Scene, Night with Portrait, Children, High Key, Low Key, DIS Mode, Nature Macro, Candle, Sunset, Document, Panorama, Fireworks, Beach and Snow, Fisheye Conv, Wide Conv, Macro Conv, 3D | Scene Intelligent Auto, No Flash, Creative Auto, HDR Backlight Control, Program AE, Shutter-priority AE, Aperture-priority AE, Manual |
| Macro Mode | Yes | - |
| viewfinder features |
| View Finder | - | Yes |
| View Finder Type | - | Eye-level Pentamirror |