| Links | ||
|---|---|---|
| Prices: | Compare Prices | |
| Manufacturer URL: | Manufacturer website | Manufacturer website |
| Predecessor: | ||
| Successor: |
Nikon Z7 II
Z7 vs Z7 II |
|
| General | ||
| Model Number: | A55 | Z7 |
| Alternate Model Number(s): | SLT-A55 (w/o GPS) | Z 7 |
| Camera Format: | SLR | Compact System Camera |
| Currently Manufactured: | No | Yes |
| Retail Price: | $849.99 | $3399.95 |
| Street Price: | $733.99 | $2,063.62 |
| Date Available: | 2010-10-15 | 2018-09-27 |
| Tripod Mount: | Yes | Yes |
| Weight: |
25.6 oz
(727 g)
includes batteries, kit lens |
41.4 oz
(1,175 g)
includes batteries, kit lens |
| Size: |
4.9 x
3.6 x
3.3 in. (124 x 92 x 85 mm) |
5.3 x
4.0 x
2.7 in. (134 x 101 x 68 mm) |
| Waterproof: | No | No |
| Waterproof Depth: | n/a | n/a |
| Image Sensor | ||
| Sensor Type: | CMOS | CMOS |
| Sensor Manufacturer: | Sony | |
| Effective Megapixels: | 16.2 | 45.7 |
| Sensor Format: | APS-C | 35mm |
| Sensor size: | 369.72mm2 (23.7mm x 15.6mm) | 858.01mm2 (35.90mm x 23.90mm) |
| Approximate Pixel Pitch: | 4.82 microns | 4.35 microns |
| Focal Length Multiplier: | 1.5x | 1.0x |
| Aspect Ratio: | 3:2, 16:9 | 3:2 |
| Color Filter Type: | RGBG | RGBG |
| Anti Aliasing Filter: | Fixed | None |
| Self-Cleaning: | Yes | Yes |
| Sensor shift image stabilization: | Yes | Yes |
| On-Sensor Phase Detect: | No | Yes |
| DxO Sensor Score: | 73 | 99 |
| DxO Color Depth Score (bits): | 23.0 | 26.3 |
| DxO Dynamic Range Score (evs): | 12.4 | 14.6 |
| DxO Maximum Effective ISO Score (iso): | 818 | 2,668 |
| Image Capture | ||
| Image Resolution: |
4912 x 3264
(16.0 MP,
3:2), 4912 x 2760 (13.6 MP, 16:9), 3568 x 2368 (8.4 MP, Other), 3568 x 2000 (7.1 MP, 16:9), 2448 x 1624 (4.0 MP, Other), 2448 x 1376 (3.4 MP, 16:9), 12416 x 1856 (23.0 MP, Other), 8192 x 1856 (15.2 MP, Other), 2160 x 5536 (12.0 MP, Other), 2160 x 3872 (8.4 MP, Other), 7152 x 1080 (7.7 MP, Other), 4912 x 1080 (5.3 MP, Other), 1920 x 1080 (2.1 MP, 16:9) |
8256 x 5504
(45.4 MP,
3:2), 6192 x 4128 (25.6 MP, 3:2), 4128 x 2752 (11.4 MP, 3:2), 6880 x 5504 (37.9 MP, 5:4), 5152 x 4120 (21.2 MP, 5:4), 3440 x 2752 (9.5 MP, 5:4), 5504 x 5504 (30.3 MP, 1:1), 4128 x 4128 (17.0 MP, 1:1), 2752 x 2752 (7.6 MP, 1:1), 8256 x 4640 (38.3 MP, 16:9), 6192 x 3480 (21.5 MP, 16:9), 4128 x 2320 (9.6 MP, 16:9), 3840 x 2160 (8.3 MP, 16:9), 1920 x 1080 (2.1 MP, 16:9), 5408 x 3600 (19.5 MP, 3:2), 4048 x 2696 (10.9 MP, 3:2), 2704 x 1800 (4.9 MP, 3:2) |
| Image File Format: | JPEG, RAW (ARW 2.2), RAW+JPEG | JPEG (EXIF 2.31), NEF (RAW): 12 or 14 bit, lossless compressed, compressed, or uncompressed; large, medium, and small available (medium and small images are recorded at a bit depth of 12 bits using lossless compression); TIFF |
| Continuous-mode frames/second: | 9.0 | 9.0 |
| Video Capture | ||
| Can take movies: | Yes | Yes |
| Movie Resolution: |
1920x1080 (60i/50i)
1440x1080 (30/25) 640x480 (30/25) |
3840x2160 (30p/25p/24p)
1920x1080 (60p/50p/30p/25p/24p) 1920x1080 (120p/100p) |
| Movie File Format: | AVCHD, MP4 | MOV/MP4 (H.265/MPEG-4 AVC, Linear PCM/AAC audio) |
| Composite Video Out: | No | No |
| NTSC/PAL Switchable Video: | n/a | n/a |
| Video Usable as Viewfinder: | n/a | n/a |
| HD Video Out: | Yes | Yes |
| HD Video Connection: | HDMI | HDMI |
| Lens & Optics | ||
| Lens Mount: | Sony Alpha (Minolta A) | Nikon Z |
| Lens: | Sony 18-55mm f/3.5-5.6 DT SAM | Nikkor Z 24-70mm f/4 S |
| Focal Length (35mm equivalent): | 27 - 83mm | 24 - 70mm |
| Focal Length (actual): | 18 - 55mm | 24 - 70mm |
| Zoom Ratio: | 3.00x | 2.92x |
| Aperture Range: | f/3.5 - 22 (W), f/5.6 - ?? (T) | f/4 - f/22; 7-blade rounded diaphragm |
| Integrated ND Filter: | No | |
| Normal Focus Range: |
30 cm to Infinity 11.8 in to Infinity |
|
| Macro Focus Range: | ||
| Filter Thread: | 55.0mm | 72.0mm |
| Thread Type: | n/a | n/a |
| Optical Image Stabilization: | No | No |
| Digital Zoom: | No | Yes |
| Digital Zoom Values: | n/a | 1.5x (DX), 5:4, 1:1, 16:9 crop modes |
| Auto Focus | ||
| Auto Focus: | Yes | Yes |
| Auto Focus Type: | Phase Detection: 15 points (3 points cross type); Wide, Spot, Local. | Hybrid phase-detection/contrast AF; 493 (single-point AF); Pinpoint, single-point and dynamic-area AF (pinpoint and dynamic-area AF available in photo mode only); wide-area AF (S); wide-area AF (L); auto-area AF; Autofocus (AF): Single-servo AF (AF-S); continuous-servo AF (AF-C); full-time AF (AF-F; available only in movie mode); predictive focus tracking; Manual focus (M): Electronic rangefinder can be used; Touch AF and Touch Shutter supported. |
| Auto Focus Assist Light? | Yes | Yes |
| Manual Focus: | Yes | Yes |
| Viewfinder | ||
| Viewfinder: | EVF / LCD | EVF / LCD |
| Viewfinder Type: | EVF type; 1.1cm (0.43") 1,152Kdots, 100% coverage, 1.10x mag., 19mm eyepoint, -4 to +4 diopter | EVF: 1.27-cm/0.5-in., approx. 3690k-dot (Quad VGA) OLED with color balance and auto and 11-level manual brightness controls, 100% coverage, 0.8x magnification, 21mm eyepoint, -4 to +2 diopter, eye sensor |
| Focus Peaking: | No | Yes |
| EVF Resolution: | 3,686,400 dots (1,228,800 pixels) | |
| Viewfinder Magnification (35mm equivalent): | 0.73x | 0.80x |
| Viewfinder Magnification (nominal/claimed): | 1.10x | 0.80x |
| Display | ||
| Eye-level Viewfinder: | Yes | Yes |
| Rear Display: | Yes | Yes |
| Rear Display Size (inches): | 3.0 | 3.2 |
| Rear Display Resolution: | 921,600 dots | 2,100,000 dots |
| Touchscreen: | No | Yes |
| Articulating Screen: | Yes | Yes |
| Tilt Swivel Screen: | No | |
| Selfie Screen: | No | |
| Max Playback Zoom: | 11.8x | 32.0x |
| Top Deck Display: | No | Yes |
| Exposure | ||
| Maximum ISO (native): | 12800 | 25600 |
| Minimum ISO (native): | 100 | 64 |
| ISO Settings: | Auto (100-1600), 100, 200, 400, 800, 1600, 3200, 6400, 12800. (Multi-frame NR mode up to ISO 25600) | Auto, 64 - 25,600 in 1/3, 1/2 or 1EV steps, plus down to 32 in Lo-1 and up to 102,400 in Hi-2 |
| Auto ISO Mode: | Yes | Yes |
| White Balance Settings: | Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent, Flash, Custom, Color Temp./ Filter (2500 – 9900K with 19-step Magenta/Green compensation) | Auto (3), Natural Light Auto, Incandescent, Fluorescent (7), Direct Sunlight, Flash, Cloudy, Shade, Preset Manual (6), Color Temperature (2,500K-10,000K); Fine-tuning available. |
| Shutter Speed Range: | 1/4000 - 30 sec | 1/8000 - 30 sec |
| Bulb Mode: | Yes | Yes |
| Exposure Compensation: | +/- 2.0EV in 0.3EV steps | +/- 5.0EV in 0.3EV steps |
| Metering Modes: | 1200-zone Evaluative, Center-weighted, Spot | Matrix, Center-weighted (weight of 75% given to 12-mm circle in center of frame; weighting can be based on average of entire frame), Spot (4mm circle or about 1.5% frame, centered on selected focus point), Highlight-weighted |
| Program Auto Exposure: | Yes | Yes |
| Aperture Priority: | Yes | Yes |
| Shutter Priority: | Yes | Yes |
| Full Manual Exposure: | Yes | Yes |
| Creative Exposure Modes: | Portrait, Landscape, Macro, Sports action, Sunset, Night portrait, Night view, Hand-held Twilight, Sweep Panorama (2D/3D) | 3 User Settings (U1, U2, U3); HDR, Multiple Exposure (Add, average, lighten, darken) |
| Self Timer: | 2 or 10 seconds | 2/5/10/20 seconds |
| Time Lapse (intervalometer): | Yes | |
| High Resolution Composite: | No | No |
| Flash | ||
| Built-in Flash: | Yes | No |
| Flash Modes: | Auto, Off, Fill-flash, Rear sync, Wireless, High-Speed sync, Slow sync, Red-eye reduction: On/Off | Front-curtain sync, slow sync, rear-curtain sync, red-eye reduction, red-eye reduction with slow sync, slow rear-curtain sync, off |
| Flash Guide Number (ISO 100): | 10.0 m / 32.8 ft. | n/a |
| Flash Range Description: | Lens dependent | n/a |
| Max Flash Sync: | 1/160 | 1/200 |
| Flash Exposure Compensation: | +/- 2.0 EV in 0.3EV steps | -3 to +1 EV in 0.3EV steps |
| External Flash Connection: | Hot shoe | ISO-type hotshoe |
| Built-In Wireless Flash Control: | Full TTL exposure | No |
| Image Storage | ||
| Usable Memory Types: | MS PRO Duo / SD / SDHC / SDXC | XQD |
| UHS Support: | ||
| Other Memory: | ||
| Dual Card Slots: | No | No |
| RAW Capture Support: | Yes | Yes |
| Uncompressed Format: | RAW (ARW 2.2), RAW+JPEG | NEF (RAW): 12 or 14 bit, lossless compressed, compressed, or uncompressed; large, medium, and small available (medium and small images are recorded at a bit depth of 12 bits using lossless compression); TIFF |
| Movie File Format: | AVCHD, MP4 | MOV/MP4 (H.265/MPEG-4 AVC, Linear PCM/AAC audio) |
| Included Memory: | No memory included | |
| Included Memory Type: | ||
| Connectivity | ||
| Built-In Wi-Fi: | No | Yes |
| NFC: | No | |
| Bluetooth: | No | Yes |
| Built-In GPS: | Yes | No |
| Microphone Jack: | Yes | Yes |
| Headphone Jack: | No | Yes |
| External Connections: | USB 2.0 High Speed | USB 3.0 Super Speed,Bluetooth,WiFi |
| PictBridge Compliant: | Yes | Yes |
| DPOF Compliant: | Yes | Yes |
| Remote Control: | Yes | Yes |
| Remote Control Type: | Optional Wireless or Wired | Wi-Fi, Bluetooth or optional wired or wireless |
| Connections (extended): | Type-C HDMI Mini Connector (BRAVIA Sync, PhotoTV HD); Wired Remote Terminal, 3.5mm External Stereo Micophone Jack | Mini (Type C) HDMI, USB 3.1 Gen 1 Type C (SuperSpeed USB), 10-pin Expansion Terminal, Stereo Mic Jack (3.5mm, plug-in power provided), Stereo Audio Out (3.5mm) |
| Performance Timing | ||
| Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): | 0.52 | 0.48 |
| Cycle time for RAW shooting in single shot mode (seconds per frame): | 0.52 | |
| Buffer size for RAW shooting in single shot mode (frames): | 28 | |
| Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): | 0.46 | |
| Camera penalizes early shutter press? | No | No |
| JPEG shooting speed in burst mode (fps, max resolution): | 9.0 | 9.0 |
| Buffer size for JPEG shooting in burst mode (frames, max resolution): | 32 | 26 |
| RAW shooting speed in burst mode (fps): | 9.0 | |
| Buffer size for RAW shooting in burst mode (frames): | 23 | |
| RAW+JPEG shooting speed in burst mode (fps): | 9.0 | |
| Buffer Size for RAW+JPEG shooting in burst mode (frames): | 20 | |
| Shutter lag (full AF, wide/mid): | 0.22 seconds | 0.21 seconds |
| Shutter lag (full AF, tele): | ||
| Shutter lag (full AF, live view - DSLR): | ||
| Shutter lag (prefocused, live view - DSLR): | ||
| Shutter Lag (manual focus): | 0.214 seconds | 0.060 seconds |
| Shutter lag (full AF, with flash): | 0.48 seconds | |
| Shutter Lag (prefocused): | 0.103 seconds | 0.059 seconds |
| Shutter Lag (notes): | Full AF, wide-area mode = 0.218s | Shutter lag results are with Electronic First Curtain Shutter (EFCS) enabled. |
| Startup Time: | 0.9 seconds | 1.5 seconds |
| Play -> Record Time: | 0.6 seconds | 0.9 seconds |
| Flash cycle time, full power: | 3.7 seconds | |
| Power | ||
| Battery Life, Stills (CIPA Rating Monitor/Live View): | 400 shots | |
| Battery Life, Still (CIPA Rating OVF/EVF): | 330 shots | 330 shots |
| Battery Life, Video: | 85 minutes | |
| Battery Form Factor: | Proprietary NP-FW50 | Proprietary |
| Usable Battery Types: | Lithium-ion rechargeable | EN-EL15b/EN-EL15a/EN-EL15 Lithium-ion rechargeable |
| Batteries Included: | 1 x Proprietary NP-FW50 Lithium-ion rechargeable | 1 x Proprietary EN-EL15b Lithium-ion rechargeable |
| Battery Charger Included (dedicated charger or AC/USB adapter): | Yes | Yes |
| Dedicated Battery Charger Included: | Yes | |
| Internal Charging Supported: | Yes | |
| Software | ||
| Included Software: | Software CD-ROM (includes Picture Motion Browser, Image Data Converter SR, Image Data Lightbox SR) | |
| OS Compatibility: | Windows XP SP3/Vista SP2/7, Mac OS X (v.10.3 +) | |
| Miscellaneous | ||
| Notes & Features: | SteadyShot INSIDE Image Stabilization, Articulating LCD, 1080i HD Video, Multi-frame NR, Hand-held Twilight, Auto HDR, D-Range Optimizer, 2D/3D Sweep Panorama, Smile Shutter, DOF Preview, 10fps Burst Mode, Built-in GPS. SLT-A55 is identical but without GPS. | |
