• 1/1.7 inch 43.3mm2
  • 12.0 megapixels
  • 28.00mm - 112.00mm (35mm eq.)
  • 35mm 849.7mm2
  • 61.0 megapixels
  • ISO 100 - 32,000
  • Detailed specifications
  • Pentax MX-1
  • Sony Alpha ILCE-A7R IV
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Sony A7R III
A7R III vs A7R IV
Successor:   Sony A7R V
General
Model Number: MX-1 A7R IV
Alternate Model Number(s):   ILCE-7RM4
Camera Format: Mid-Sized Compact System Camera
Currently Manufactured: No Yes
Retail Price: $499.95 $3500.00
Street Price: $399.00 $3,331.19
Date Available: 2013-02-15 2019-09-01
Tripod Mount: Yes Yes
Weight: 14.1 oz (399 g)
includes batteries
23.5 oz (665 g)
includes batteries
Size: 4.8 x 2.4 x 2.0 in.
(122 x 61 x 51 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
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: BSI CMOS Sony
Effective Megapixels: 12.0 61.0
Sensor Format: 1/1.7 inch 35mm
Sensor size: 43.32mm2 (7.6mm x 5.7mm) 849.66mm2 (35.70mm x 23.80mm)
Approximate Pixel Pitch: 1.90 microns 3.76 microns
Focal Length Multiplier: n/a 1.0x
Aspect Ratio: 4:3 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter:   None
Self-Cleaning: Yes Yes
Sensor shift image stabilization: Yes Yes
On-Sensor Phase Detect: No Yes
DxO Sensor Score: 49 99
DxO Color Depth Score (bits): 20.4 26.0
DxO Dynamic Range Score (evs): 11.3 14.8
DxO Maximum Effective ISO Score (iso): 208 3,344
Image Capture
Image Resolution: 4000 x 3000 (12.0 MP, 4:3),
3984 x 2656 (10.6 MP, 3:2),
3968 x 2232 (8.9 MP, 16:9),
3072 x 2304 (7.1 MP, 4:3),
3072 x 2048 (6.3 MP, 3:2),
3072 x 1728 (5.3 MP, 16:9),
2592 x 1728 (4.5 MP, 3:2),
2560 x 1440 (3.7 MP, 16:9),
2048 x 1152 (2.4 MP, 16:9)
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 (Exif 2.3), 12-bit DNG RAW JPEG (Exif 2.31), RAW (14-bit ARW 2.3), RAW+JPEG
Continuous-mode frames/second: 4.0 10.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (30p)
1280x720 (60p/​30p)
640x480 (120p)
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 XAVC S / AVCHD 2.0 / MP4; Audio: LPCM / Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: n/a Sony E
Lens: smc Pentax Lens, 11 elements in 8 groups (4 aspherical elements) n/a
Focal Length (35mm equivalent): 28 - 112mm  
Focal Length (actual): 6 - 24mm  
Zoom Ratio: 4.00x  
Aperture Range: f/1.8 (W) / f/2.5 (T) - f/8  
Integrated ND Filter: Yes
Normal Focus Range: 40 cm to Infinity
15.6 in to Infinity
 
Macro Focus Range: 1 - 20 cm
0.4 - 7.9 in
 
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: Yes Yes
Digital Zoom Values: Up to 1.95x Up to 4x; up to 2x Clear Image Digital Zoom
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast Detection: Auto, Spot, Tracking , AF Select (25 Points), Infinity Landscape, Manual Focus, Pan Focus, AF Point Switching 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? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: No / LCD EVF / LCD
Viewfinder Type:   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: No Yes
EVF Resolution: n/a 5,760,000 dots (1,920,000 pixels)
Viewfinder Magnification (35mm equivalent):   0.78x
Viewfinder Magnification (nominal/claimed):   0.78x
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 921,000 dots (307,000 px) 1,440,000 dots (360,000 px)
Touchscreen: No Yes
Articulating Screen: Yes Yes
Tilt Swivel Screen: No
Selfie Screen: No
Max Playback Zoom: 10.0x  
Top Deck Display: No
Exposure
Maximum ISO (native): 12800 32000
Minimum ISO (native): 100 100
ISO Settings: Auto (100-12800 with selectable upper limit), 100-12800 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, Daylight, Shade, Cloudy, Fluorescent light (D:Daylight Color, N:Daylight White, W:Cool White, L:Warm White),Tungsten, Flash 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: 1/8000 - 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: Multi-segment, Center-weighted, Spot 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: Natural Skin Tone, Handheld Night Snap (5M), Night Scene Portrait, Night Scene, Digital Panorama (2M per frame), High Speed Movie (VGA, 120 FPS capture, 30 FPS playback), Time Lapse Movie, Landscape, Blue Sky, Sunset, Flower, Digital SR (ISO 3200-6400 5M), Kids, Pet, Portrait, Food, Fireworks, Surf & Snow, Sport, Fisheye, Sketch, Miniature Filter, Text, Frame Composite (3M); Digital filters (capture): Movie (B&W, Sepia, Fisheye, Miniature, Sketch); Dynamic Range adjustment: Yes (shadow, highlight) 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 10; 3 shots after 10 seconds 2, 5, 10; 3/5 shots after 2/5/10 seconds
Time Lapse (intervalometer): No Yes
High Resolution Composite: No 240.8 megapixels
Flash
Built-in Flash: Yes No
Flash Modes: Auto, Flash Off, Flash On, Red-eye, Slow-speed synchro, Slow-speed+Red-eye, Trailing Curtain Sync 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: 1.31 - 40’ (wide, auto ISO), 1.31 - 29’ (tele, auto ISO) n/a
Max Flash Sync:   1/250
Flash Exposure Compensation: -2 to +1 EV in 0.3EV steps +/- 3.0 EV in 0.3EV steps
External Flash Connection: n/a Enhanced Multi Interface Hot Shoe, Sync Terminal
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support:   UHS-II
Other Memory:   Dual SD UHS-II slots
Dual Card Slots: No Yes
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit DNG RAW RAW (14-bit ARW 2.3), RAW+JPEG
Movie File Format: MOV (MPEG-4 AVC/H.264) with stereo sound XAVC S / AVCHD 2.0 / MP4; Audio: LPCM / Dolby Digital (AC-3) / MPEG-4 AAC-LC, stereo
Included Memory: 75.3 MB No memory included
Included Memory Type: Internal  
Connectivity
Built-In Wi-Fi: No Yes
NFC: No Yes
Bluetooth: No Yes
Built-In GPS: No No
Microphone Jack: No Yes
Headphone Jack: No Yes
External Connections: USB 2.0 High Speed USB 2.0 High Speed,USB 3.0 Super Speed,Bluetooth,WiFi
PictBridge Compliant: No No
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional IR Optional via RM-VPR1, USB, Wi-Fi or Bluetooth
Connections (extended): Micro (Type D) HDMI USB-C (USB 3.1 Gen 1), Multi-Terminal Micro USB (with remote support), Type-D Micro HDMI, 3.5mm Microphone and Headphone jacks
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 1.43 <0.3
Cycle time for RAW shooting in single shot mode (seconds per frame): 1.91  
Buffer size for RAW shooting in single shot mode (frames): 7  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   <0.3
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 4.0 10.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 10 70
RAW shooting speed in burst mode (fps):   7.2
Buffer size for RAW shooting in burst mode (frames):   32
RAW+JPEG shooting speed in burst mode (fps):   7.2
Buffer Size for RAW+JPEG shooting in burst mode (frames):   32
Shutter lag (full AF, wide/mid): 0.24 seconds 0.21 seconds
Shutter lag (full AF, tele): 0.25 seconds  
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.178 seconds 0.124 seconds
Shutter lag (full AF, with flash): 0.30 seconds  
Shutter Lag (prefocused): 0.016 seconds 0.022 seconds
Shutter Lag (notes):    
Startup Time: 2.2 seconds 1.3 seconds
Play -> Record Time: 1.4 seconds 1.5 seconds
Flash cycle time, full power: 4.8 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 290 shots 670 shots
Battery Life, Still (CIPA Rating OVF/EVF):   530 shots
Battery Life, Video:   105 minutes
Battery Form Factor: Proprietary D-Li106 Proprietary
Usable Battery Types: Lithium-ion rechargeable NP-FZ100 Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-Li106 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
Internal Charging Supported: Yes
Software
Included Software: Software CD-ROM including SILKYPIX Developer Studio 3.0 LE for PENTAX RICOH IMAGING RAW development software Capture One Express (for Sony) free download
OS Compatibility:    
Miscellaneous
Notes & Features: Image Stabilization: Still: Sensor-Shift SR, Digital SR (ISO 100-12800), Dual (SR & Pixel Track SR); Movie: Movie Shake Reduction Mode (Movie SR); (Maximum effect of 3 stops using Sensor-Shift SR); 12-bit RAW (DNG) support, Dual-axial digital level, Dual remote control sensors. Available in black or two-tone silver and black.