| Prices: |
Compare Prices
|
Compare Prices
|
| Manufacturer URL: |
Manufacturer website
|
Manufacturer website
|
| Predecessor: |
Pentax 645D
645D vs 645Z
|
Sony A7R III
A7R III vs A7R IV
|
| Successor: |
|
Sony A7R V
|
| Model Number: |
645Z |
A7R IV |
| Alternate Model Number(s): |
|
ILCE-7RM4 |
| Camera Format: |
Pro SLR |
Compact System Camera |
| Currently Manufactured: |
Yes |
Yes |
| Retail Price: |
$8499.95 |
$3500.00 |
| Street Price: |
$4,845.43 |
$3,331.19 |
| Date Available: |
2014-06-15 |
2019-09-01 |
| Tripod Mount: |
Yes |
Yes |
| Weight: |
54.9 oz
(1,555 g)
includes batteries
|
23.5 oz
(665 g)
includes batteries
|
| Size: |
6.1 x
4.6 x
4.8 in.
(156 x
117 x
123 mm)
|
5.1 x
3.8 x
3.1 in.
(129 x
96 x
78 mm)
|
| Waterproof: |
No |
No |
| Waterproof Depth: |
n/a |
n/a |
|
|
| Sensor Type: |
CMOS |
CMOS |
| Sensor Manufacturer: |
Sony |
Sony |
| Effective Megapixels: |
51.4 |
61.0 |
| Sensor Format: |
Medium format |
35mm |
| Sensor size: |
1436.64mm2 (43.80mm x 32.80mm) |
849.66mm2 (35.70mm x 23.80mm) |
| Approximate Pixel Pitch: |
5.31 microns |
3.76 microns |
| Focal Length Multiplier: |
0.8x |
1.0x |
| Aspect Ratio: |
4:3 |
3:2 |
| Color Filter Type: |
RGBG |
RGBG |
| Anti Aliasing Filter: |
None |
None |
| Self-Cleaning: |
Yes |
Yes |
| Sensor shift image stabilization: |
No |
Yes |
| On-Sensor Phase Detect: |
No |
Yes |
| DxO Sensor Score: |
101 |
99 |
| DxO Color Depth Score (bits): |
26.0 |
26.0 |
| DxO Dynamic Range Score (evs): |
14.7 |
14.8 |
| DxO Maximum Effective ISO Score (iso): |
4,505 |
3,344 |
| Image Resolution: |
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) |
9504 x 6336
(60.2 MP,
3:2),
6240 x 4160
(26.0 MP,
3:2),
4752 x 3168
(15.1 MP,
3:2),
8448 x 6336
(53.5 MP,
4:3),
5552 x 4160
(23.1 MP,
4:3),
4224 x 3168
(13.4 MP,
4:3),
9504 x 5344
(50.8 MP,
16:9),
6240 x 3512
(21.9 MP,
16:9),
4752 x 2672
(12.7 MP,
16:9),
6336 x 6336
(40.1 MP,
1:1),
4160 x 4160
(17.3 MP,
1:1),
3168 x 3168
(10.0 MP,
1:1) |
| Image File Format: |
JPEG, 14-bit PEF / DNG RAW, TIFF |
JPEG (Exif 2.31), RAW (14-bit ARW 2.3), RAW+JPEG |
| Continuous-mode frames/second: |
3.1 |
10.0 |
| Can take movies: |
Yes |
Yes |
| Movie Resolution: |
1920x1080 (60i/50i/30p/25p/24p)
1280x720 (60p/50p/30p/25p/24p)
|
3840x2160 (30p/25p/24p)
1920x1080 (120p/100p/60p/60i/50p/50i/30p/25p/24p)
|
| Movie File Format: |
MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record |
XAVC S / AVCHD 2.0 / MP4; Audio: LPCM / Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo |
| 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: |
Pentax 645 bayonet |
Sony E |
| Lens: |
n/a |
n/a |
| Focal Length (35mm equivalent): |
|
|
| Focal Length (actual): |
|
|
| Zoom Ratio: |
|
|
| Aperture Range: |
|
|
| Integrated ND Filter: |
No |
|
| Normal Focus Range: |
|
|
| 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: |
|
Up to 4x; up to 2x Clear Image Digital Zoom |
| Auto Focus: |
Yes |
Yes |
| Auto Focus Type: |
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) |
Fast Hybrid 4D AF: 567 points (PDAF), APS-C mode with full-frame lens: 325 points (PDAF), with APS-C lens: 247 points (PDAF) / 425 points (contrast-detection AF); Wide (567 points (PDAF), 425 points (CDAF))/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot/Tracking (Wide/Zone/Center/Flexible Spot (S/M/L)/Expanded Flexible Spot); Touch AF |
| Auto Focus Assist Light? |
No |
Yes |
| Manual Focus: |
Yes |
Yes |
| Viewfinder: |
Optical / LCD
|
EVF / LCD
|
| Viewfinder Type: |
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) |
EVF: 1.3 cm (0.5 type) 5.76M-dot UXGA color OLED, 100% coverage, 0.78x magnification, -4.0 to +3.0m-1 diopter, Approx. 23mm eyepoint from the eyepiece lens, 18.5mm from the eyepiece frame at -1m-1, eye sensor |
| Focus Peaking: |
Yes |
Yes |
| EVF Resolution: |
n/a
|
5,760,000 dots (1,920,000 pixels)
|
| Viewfinder Magnification (35mm equivalent): |
0.78x |
0.78x |
| Viewfinder Magnification (nominal/claimed): |
0.62x |
0.78x |
| Eye-level Viewfinder: |
Yes |
Yes |
| Rear Display: |
Yes |
Yes |
| Rear Display Size (inches): |
3.2 |
3.0 |
| Rear Display Resolution: |
1,036,800 dots
(345,600 px)
|
1,440,000 dots
(360,000 px)
|
| Touchscreen: |
No |
Yes |
| Articulating Screen: |
Yes |
Yes |
| Tilt Swivel Screen: |
No |
No |
| Selfie Screen: |
No |
No |
| Max Playback Zoom: |
16.0x |
|
| Top Deck Display: |
Yes |
No |
|
|
| Maximum ISO (native): |
204800 |
32000 |
| Minimum ISO (native): |
100 |
100 |
| ISO Settings: |
Auto, 100-204800 in 1, 1/2 or 1/3EV steps |
AUTO (ISO 100-12800; selectable lower limit and upper limit), ISO 100 - 32000, expandable to ISO 50 - 102400 |
| Auto ISO Mode: |
Yes |
Yes |
| White Balance Settings: |
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 |
Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent (4 settings), Flash, Custom, Color Temp./ Filter (2500-9900K with 15-step Magenta/Green compensation), Underwater |
| Shutter Speed Range: |
1/4000 - 30 sec |
1/8000 - 30 sec |
| Bulb Mode: |
Yes |
Yes |
| Exposure Compensation: |
+/- 5.0EV
in 0.3EV steps
|
+/- 5.0EV
in 0.3EV steps
|
| Metering Modes: |
86K-pixel RBG sensor: Multi-segment metering, Center-weighted metering, Spot metering |
1200-zone Evaluative Multi-segment, Center-weighted, Spot, Spot Standard/Large, Entire Screen Avg., Highlight |
| Program Auto Exposure: |
Yes |
Yes |
| Aperture Priority: |
Yes |
Yes |
| Shutter Priority: |
Yes |
Yes |
| Full Manual Exposure: |
Yes |
Yes |
| Creative Exposure Modes: |
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) |
3 Custom Settings; Slow & Quick Motion; HDR: Auto Exposure Difference, Exposure difference Level (1-6 EV at 1.0 EV step) |
| Self Timer: |
2 or 12 seconds |
2, 5, 10; 3/5 shots after 2/5/10 seconds |
| Time Lapse (intervalometer): |
Yes |
Yes |
| High Resolution Composite: |
No |
240.8 megapixels |
| Built-in Flash: |
No |
No |
| Flash Modes: |
P-TTL; high-speed sync, wireless sync supported with compatible flash unit |
Flash off, Auto flash, Fill-flash, Slow Sync., Rear Sync., Hi-speed Sync, Wireless; Red-eye reduction: On/Off |
| Flash Guide Number (ISO 100): |
n/a |
n/a |
| Flash Range Description: |
n/a |
n/a |
| Max Flash Sync: |
1/125 |
1/250 |
| Flash Exposure Compensation: |
-2 to +1 EV
|
+/- 3.0 EV
in 0.3EV steps
|
| External Flash Connection: |
Hot shoe, X-sync socket |
Enhanced Multi Interface Hot Shoe, Sync Terminal |
| Built-In Wireless Flash Control: |
|
No |
| Usable Memory Types: |
SD / SDHC / SDXC |
SD / SDHC / SDXC |
| UHS Support: |
UHS-I |
UHS-II |
| Other Memory: |
|
Dual SD UHS-II slots |
| Dual Card Slots: |
Yes |
Yes |
| RAW Capture Support: |
Yes |
Yes |
| Uncompressed Format: |
14-bit PEF / DNG RAW, TIFF |
RAW (14-bit ARW 2.3), RAW+JPEG |
| Movie File Format: |
MOV (MPEG-4 AVC/H.264) with stereo sound; Motion JPEG (AVI) for Interval Movie Record |
XAVC S / AVCHD 2.0 / MP4; Audio: LPCM / Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo |
| Included Memory: |
No memory included |
No memory included |
| Included Memory Type: |
|
|
| Built-In Wi-Fi: |
No |
Yes |
| NFC: |
No |
Yes |
| Bluetooth: |
No |
Yes |
| Built-In GPS: |
No |
No |
| Microphone Jack: |
Yes |
Yes |
| Headphone Jack: |
No |
Yes |
| External Connections: |
USB 3.0 Super Speed |
USB 2.0 High Speed,USB 3.0 Super Speed,Bluetooth,WiFi |
| PictBridge Compliant: |
No |
No |
| DPOF Compliant: |
No |
Yes |
| Remote Control: |
Yes |
Yes |
| Remote Control Type: |
Optional wired or wireless |
Optional via RM-VPR1, USB, Wi-Fi or Bluetooth |
| Connections (extended): |
Micro (Type-D) HDMI, DC input, Stereo microphone jack, wired remote socket |
USB-C (USB 3.1 Gen 1), Multi-Terminal Micro USB (with remote support), Type-D Micro HDMI, 3.5mm Microphone and Headphone jacks |
|
|
| Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): |
0.35 |
<0.3 |
| Cycle time for RAW shooting in single shot mode (seconds per frame): |
0.33 |
|
| Buffer size for RAW shooting in single shot mode (frames): |
10 |
|
| Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): |
0.33 |
<0.3 |
| Camera penalizes early shutter press? |
Yes |
No |
| JPEG shooting speed in burst mode (fps, max resolution): |
3.1 |
10.0 |
| Buffer size for JPEG shooting in burst mode (frames, max resolution): |
12 |
70 |
| RAW shooting speed in burst mode (fps): |
3.1 |
7.2 |
| Buffer size for RAW shooting in burst mode (frames): |
10 |
32 |
| RAW+JPEG shooting speed in burst mode (fps): |
3.1 |
7.2 |
| Buffer Size for RAW+JPEG shooting in burst mode (frames): |
10 |
32 |
| Shutter lag (full AF, wide/mid): |
0.16 seconds |
0.21 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): |
0.117 seconds |
0.124 seconds |
| Shutter lag (full AF, with flash): |
|
|
| Shutter Lag (prefocused): |
0.112 seconds |
0.022 seconds |
| Shutter Lag (notes): |
OVF:
Full AF lag, wide-area mode = 0.170s
Live View:
Full AF lag, Spot AF mode = 1.174s
Prefocused = 0.385s |
|
| Startup Time: |
1.5 seconds |
1.3 seconds |
| Play -> Record Time: |
0.7 seconds |
1.5 seconds |
| Flash cycle time, full power: |
|
|
| Battery Life, Stills (CIPA Rating Monitor/Live View): |
|
670 shots |
| Battery Life, Still (CIPA Rating OVF/EVF): |
650 shots |
530 shots |
| Battery Life, Video: |
|
105 minutes
|
| Battery Form Factor: |
Proprietary D-LI90 |
Proprietary |
| Usable Battery Types: |
Lithium-ion rechargeable |
NP-FZ100 Lithium-ion rechargeable |
| Batteries Included: |
1 x Proprietary D-LI90 Lithium-ion rechargeable
|
1 x Proprietary NP-FZ100 Lithium-ion rechargeable
|
| Battery Charger Included (dedicated charger or AC/USB adapter): |
Yes |
Yes |
| Dedicated Battery Charger Included: |
Yes |
Yes |
| Internal Charging Supported: |
No |
Yes |
| Included Software: |
|
Capture One Express (for Sony) free download |
| OS Compatibility: |
|
|
| Notes & Features: |
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. |
|
