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Manufacturer URL: |
Manufacturer website
|
Manufacturer website
|
Predecessor: |
|
Pentax 645D
645D vs 645Z
|
Successor: |
Sony A77 II
A77 vs A77 II
|
|
Model Number: |
A77 |
645Z |
Alternate Model Number(s): |
|
|
Camera Format: |
SLR |
Pro SLR |
Currently Manufactured: |
No |
Yes |
Retail Price: |
$1999.99 |
$8499.95 |
Street Price: |
$1,899.00 |
$4,845.43 |
Date Available: |
2011-10-15 |
2014-06-15 |
Tripod Mount: |
Yes |
Yes |
Weight: |
48.1 oz
(1,363 g)
includes batteries, kit lens
|
54.9 oz
(1,555 g)
includes batteries
|
Size: |
5.6 x
4.1 x
3.2 in.
(143 x
104 x
81 mm)
|
6.1 x
4.6 x
4.8 in.
(156 x
117 x
123 mm)
|
Waterproof: |
No |
No |
Waterproof Depth: |
n/a |
n/a |
|
Sensor Type: |
CMOS |
CMOS |
Sensor Manufacturer: |
Sony |
Sony |
Effective Megapixels: |
24.3 |
51.4 |
Sensor Format: |
APS-C |
Medium format |
Sensor size: |
369.72mm2 (23.7mm x 15.6mm) |
1436.64mm2 (43.80mm x 32.80mm) |
Approximate Pixel Pitch: |
3.95 microns |
5.31 microns |
Focal Length Multiplier: |
1.5x |
0.8x |
Aspect Ratio: |
3:2 |
4:3 |
Color Filter Type: |
RGBG |
RGBG |
Anti Aliasing Filter: |
Fixed |
None |
Self-Cleaning: |
Yes |
Yes |
Sensor shift image stabilization: |
Yes |
No |
On-Sensor Phase Detect: |
No |
No |
DxO Sensor Score: |
78 |
101 |
DxO Color Depth Score (bits): |
24.0 |
26.0 |
DxO Dynamic Range Score (evs): |
13.2 |
14.7 |
DxO Maximum Effective ISO Score (iso): |
801 |
4,505 |
Image Resolution: |
6000 x 4000
(24.0 MP,
3:2), 6000 x 3376
(20.3 MP,
16:9), 4240 x 2832
(12.0 MP,
3:2), 4240 x 2400
(10.2 MP,
Other), 3008 x 2000
(6.0 MP,
3:2), 3008 x 1688
(5.1 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 6192
(51.1 MP,
4:3), 6192 x 5184
(32.1 MP,
Other), 5376 x 4032
(21.7 MP,
4:3), 1920 x 1440
(2.8 MP,
4:3) |
Image File Format: |
JPEG (EXIF 2.3), MPO (3D), 12-bit RAW (ARW 2.3), RAW+JPEG |
JPEG, 14-bit PEF / DNG RAW, TIFF |
Continuous-mode frames/second: |
11.6 |
3.1 |
Can take movies: |
Yes |
Yes |
Movie Resolution: |
1920x1080 (60p/28Mbps/PS or 60i/24Mbps/FX or 60i/17Mbps/FH or 24p/24Mbps/FX or 24p/17Mbps/FH)
1440x1080 (30p/12Mbps)
640x480 (30p/3Mbps)
|
1920x1080 (60i/50i/30p/25p/24p)
1280x720 (60p/50p/30p/25p/24p)
|
Movie File Format: |
AVCHD 2.0 / MP4; Audio :Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo |
MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record |
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 Mount: |
Sony Alpha (Minolta A) |
Pentax 645 bayonet |
Lens: |
Sony 16-50mm f/2.8 DT SSM (SAL1650) |
n/a |
Focal Length (35mm equivalent): |
24 -
75mm
|
|
Focal Length (actual): |
16 -
50mm
|
|
Zoom Ratio: |
3.13x |
|
Aperture Range: |
f/2.8 - f/22 (W/T) |
|
Integrated ND Filter: |
No |
No |
Normal Focus Range: |
30 cm to Infinity
11.8 in to Infinity
|
|
Macro Focus Range: |
|
|
Filter Thread: |
n/a |
n/a |
Thread Type: |
n/a |
n/a |
Optical Image Stabilization: |
No |
No |
Digital Zoom: |
Yes |
|
Digital Zoom Values: |
1.4x / 2x |
|
Auto Focus: |
Yes |
Yes |
Auto Focus Type: |
Phase Detection: 19 points (11 points cross type); Wide (auto, 19 points), Zone, Spot, Local |
27-point SAFOX 11+ Phase Difference Detection (25 cross type focus points in the center): Spot, Select, Expanded Area AF (S, M, L), Zone Select, Auto (27 AF Points) |
Auto Focus Assist Light? |
Yes |
No |
Manual Focus: |
Yes |
Yes |
Viewfinder: |
EVF / LCD
|
Optical / LCD
|
Viewfinder Type: |
EVF type; 1.3cm (0.5") 2,359K-dot OLED, 100% coverage, 1.09x mag., 22mm eyepoint, -4 to +3 diopter |
Trapezoid prism finder w/ interchangeable Natural-Bright-Matte focusing screen; Coverage: ~98%; Magnification: ~0.62x (55mmF2.8 at infinity), ~0.85x (75mmF2.8 at infinity); Diopter: -3.5 m to + 2.0 m-1; Eye Relief: ~21 mm (from view window), ~24.1 mm (from center of lens) |
Focus Peaking: |
Yes |
Yes |
EVF Resolution: |
2,359,000 dots
|
n/a
|
Viewfinder Magnification (35mm equivalent): |
0.73x |
0.78x |
Viewfinder Magnification (nominal/claimed): |
1.09x |
0.62x |
Eye-level Viewfinder: |
Yes |
Yes |
Rear Display: |
Yes |
Yes |
Rear Display Size (inches): |
3.0 |
3.2 |
Rear Display Resolution: |
921,600 dots
(307,200 px)
|
1,036,800 dots
(345,600 px)
|
Touchscreen: |
No |
No |
Articulating Screen: |
Yes |
Yes |
Tilt Swivel Screen: |
Yes |
No |
Selfie Screen: |
Yes |
No |
Max Playback Zoom: |
13.6x |
16.0x |
Top Deck Display: |
Yes |
Yes |
|
Maximum ISO (native): |
16000 |
204800 |
Minimum ISO (native): |
100 |
100 |
ISO Settings: |
Auto (100-12800 with selectable limits), 50 (expanded), 100, 200, 400, 800, 1600, 3200, 6400, 12800, 16000. (Multi-frame NR mode up to ISO 25600) |
Auto, 100-204800 in 1, 1/2 or 1/3EV steps |
Auto ISO Mode: |
Yes |
Yes |
White Balance Settings: |
Auto WB, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm white/Cool white/Day white/Daylight), Flash, C. Temp 2500 to 9900K, C Filter G7 to M7 (15-step), Custom, AWB micro adjustment |
Auto, Multi Auto, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N: Daylight White, W: Cool White, L: Warm White), Tungsten, Flash, CTE; Manual mode(s): Manual (up to 3 settings can be saved), Color Temperature (up to 3 settings can be saved), Copying the white balance settings of a captured image possible |
Shutter Speed Range: |
1/8000 - 30 sec |
1/4000 - 30 sec |
Bulb Mode: |
Yes |
Yes |
Exposure Compensation: |
+/- 5.0EV
in 0.3EV steps
|
+/- 5.0EV
in 0.3EV steps
|
Metering Modes: |
1200-zone Evaluative, Center-weighted, Spot |
86K-pixel RBG sensor: Multi-segment metering, Center-weighted metering, Spot metering |
Program Auto Exposure: |
Yes |
Yes |
Aperture Priority: |
Yes |
Yes |
Shutter Priority: |
Yes |
Yes |
Full Manual Exposure: |
Yes |
Yes |
Creative Exposure Modes: |
Scene Modes: Portrait, Landscape, Macro, Sports Action, Sunset, Night Portrait, Night Scene, Hand-held Twilight, Auto HDR, Sweep Panorama (2D/3D) |
Sensitivity Priority, Shutter & Aperture Priority; HDR Capture: Auto, Type1, Type2, Type3, Exposure Bracket Value adjustable, Auto Align (automatic composition correction function) available; Custom Image: Bright, Natural, Portrait, Landscape, Vibrant, Radiant, Muted, Bleach Bypass, Reversal Film, Monochrome, Cross Processing (Random, Preset 1-3, Favorite 1-3) |
Self Timer: |
2, 10; 3 or 5 frames after 10 seconds |
2 or 12 seconds |
Time Lapse (intervalometer): |
|
Yes |
High Resolution Composite: |
No |
No |
Built-in Flash: |
Yes |
No |
Flash Modes: |
Auto, Off, Fill-flash, Rear sync, Wireless, High-Speed sync (with external flash), Slow sync, Red-eye reduction: On/Off |
P-TTL; high-speed sync, wireless sync supported with compatible flash unit |
Flash Guide Number (ISO 100): |
12.0 m /
39.4 ft.
|
n/a |
Flash Range Description: |
GN=12(m) at ISO 100; Range is lens aperture dependent |
n/a |
Max Flash Sync: |
1/250 |
1/125 |
Flash Exposure Compensation: |
+/- 2.0 EV
in 0.3EV steps
|
-2 to +1 EV
|
External Flash Connection: |
Proprietary Hot Shoe, PC Sync Terminal |
Hot shoe, X-sync socket |
Built-In Wireless Flash Control: |
Full TTL exposure |
|
Usable Memory Types: |
MS Duo / MS PRO Duo / SD / SDHC / SDXC |
SD / SDHC / SDXC |
UHS Support: |
UHS-I |
UHS-I |
Other Memory: |
|
|
Dual Card Slots: |
No |
Yes |
RAW Capture Support: |
Yes |
Yes |
Uncompressed Format: |
12-bit RAW (ARW 2.3), RAW+JPEG |
14-bit PEF / DNG RAW, TIFF |
Movie File Format: |
AVCHD 2.0 / MP4; Audio :Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo |
MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record |
Included Memory: |
No memory included |
No memory included |
Included Memory Type: |
|
|
Built-In Wi-Fi: |
No |
No |
NFC: |
No |
No |
Bluetooth: |
No |
No |
Built-In GPS: |
Yes |
No |
Microphone Jack: |
Yes |
Yes |
Headphone Jack: |
No |
No |
External Connections: |
USB 2.0 High Speed |
USB 3.0 Super Speed |
PictBridge Compliant: |
Yes |
No |
DPOF Compliant: |
Yes |
No |
Remote Control: |
Yes |
Yes |
Remote Control Type: |
Optional Wireless or Wired |
Optional wired or wireless |
Connections (extended): |
Type-C HDMI Mini Connector (BRAVIA Sync, PhotoTV HD); Wired Remote Terminal, External Stereo Micophone Jack, DC Input |
Micro (Type-D) HDMI, DC input, Stereo microphone jack, wired remote socket |
|
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): |
0.42 |
0.35 |
Cycle time for RAW shooting in single shot mode (seconds per frame): |
0.42 |
0.33 |
Buffer size for RAW shooting in single shot mode (frames): |
5 |
10 |
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): |
0.42 |
0.33 |
Camera penalizes early shutter press? |
No |
Yes |
JPEG shooting speed in burst mode (fps, max resolution): |
11.6 |
3.1 |
Buffer size for JPEG shooting in burst mode (frames, max resolution): |
17 |
12 |
RAW shooting speed in burst mode (fps): |
11.6 |
3.1 |
Buffer size for RAW shooting in burst mode (frames): |
14 |
10 |
RAW+JPEG shooting speed in burst mode (fps): |
11.6 |
3.1 |
Buffer Size for RAW+JPEG shooting in burst mode (frames): |
13 |
10 |
Shutter lag (full AF, wide/mid): |
0.12 seconds |
0.16 seconds |
Shutter lag (full AF, tele): |
|
|
Shutter lag (full AF, live view - DSLR): |
|
1.17 seconds |
Shutter lag (prefocused, live view - DSLR): |
|
0.385 seconds |
Shutter Lag (manual focus): |
0.085 seconds |
0.117 seconds |
Shutter lag (full AF, with flash): |
0.33 seconds |
|
Shutter Lag (prefocused): |
0.054 seconds |
0.112 seconds |
Shutter Lag (notes): |
Full AF, Wide-area mode = 0.119s |
OVF:
Full AF lag, wide-area mode = 0.170s
Live View:
Full AF lag, Spot AF mode = 1.174s
Prefocused = 0.385s |
Startup Time: |
0.8 seconds |
1.5 seconds |
Play -> Record Time: |
1.0 seconds |
0.7 seconds |
Flash cycle time, full power: |
3.2 seconds |
|
Battery Life, Stills (CIPA Rating Monitor/Live View): |
530 shots |
|
Battery Life, Still (CIPA Rating OVF/EVF): |
470 shots |
650 shots |
Battery Life, Video: |
|
|
Battery Form Factor: |
Proprietary NP-FM500H |
Proprietary D-LI90 |
Usable Battery Types: |
Lithium-ion rechargeable |
Lithium-ion rechargeable |
Batteries Included: |
1 x Proprietary NP-FM500H Lithium-ion rechargeable
|
1 x Proprietary D-LI90 Lithium-ion rechargeable
|
Battery Charger Included (dedicated charger or AC/USB adapter): |
Yes |
Yes |
Dedicated Battery Charger Included: |
Yes |
Yes |
Internal Charging Supported: |
No |
No |
Included Software: |
Software CD-ROM (includes Picture Motion Browser, Image Data Converter 4) |
|
OS Compatibility: |
Windows XP SP3/Vista SP2/7, Mac OS X (v.10.5 +); PMB is Windows only |
|
Notes & Features: |
SteadyShot INSIDE Image Stabilization, Articulating LCD, 1080p HD Video, Auto+, Multi-frame NR, Hand-held Twilight, Auto HDR, Picture Effect, D-Range Optimizer, 2D/3D Sweep Panorama, Smile Shutter, DOF Preview, 12fps Burst Mode, Built-in GPS. |
New 51.4MP AA-filterless CMOS sensor, PRIME III processor, 27-point SAFOX 11 AF, 86K RGB metering, Full HD video up to 60i, tilting LCD monitor with Live View, 3fps full-res continuous burst mode. |