• 1/1.7 inch 43.3mm2
  • 12.0 megapixels
  • 37.00mm - 111.00mm (35mm eq.)
  • 4/3 224.9mm2
  • 20.3 megapixels
  • ISO 200 - 25,600
  • Detailed specifications
  • Pentax Optio A40
  • Panasonic Lumix DC-GX9
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Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Panasonic GX8
GX8 vs GX9
Successor:    
General
Model Number: A40 GX9
Alternate Model Number(s):   GX7 Mark III
Camera Format: Ultra Compact Compact System Camera
Currently Manufactured: No Yes
Retail Price: $299.95 $999.99
Street Price:   $897.99
Date Available: 2008-02-15 2018-03-15
Tripod Mount: Yes Yes
Weight: 5.3 oz (150 g)
includes batteries
23.3 oz (660 g)
includes batteries, kit lens
Size: 3.6 x 2.2 x 0.9 in.
(91 x 56 x 23 mm)
4.9 x 2.8 x 1.8 in.
(124 x 72 x 47 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD Live MOS
Sensor Manufacturer:    
Effective Megapixels: 12.0 20.3
Sensor Format: 1/1.7 inch 4/3
Sensor size: 43.32mm2 (7.6mm x 5.7mm) 224.9mm2 (17.30mm x 13.00mm)
Approximate Pixel Pitch: 1.90 microns 3.34 microns
Focal Length Multiplier: n/a 2.0x
Aspect Ratio: 4:3 4:3
Color Filter Type: RGBG RGBG
Anti Aliasing Filter:   None
Self-Cleaning: No Yes
Sensor shift image stabilization: Yes Yes
On-Sensor Phase Detect: No No
DxO Sensor Score:    
DxO Color Depth Score (bits):    
DxO Dynamic Range Score (evs):    
DxO Maximum Effective ISO Score (iso):    
Image Capture
Image Resolution: 4000 x 3000 (12.0 MP, 4:3),
3648 x 2736 (10.0 MP, 4:3),
3072 x 2304 (7.1 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1024 x 768 (0.8 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
5184 x 3888 (20.2 MP, 4:3),
3712 x 2784 (10.3 MP, 4:3),
2624 x 1968 (5.2 MP, 4:3),
1824 x 1368 (2.5 MP, 4:3),
5184 x 3456 (17.9 MP, 3:2),
3712 x 2480 (9.2 MP, 3:2),
2624 x 1752 (4.6 MP, 3:2),
1824 x 1216 (2.2 MP, 3:2),
5184 x 2920 (15.1 MP, 16:9),
3840 x 2160 (8.3 MP, 16:9),
1920 x 1080 (2.1 MP, 16:9),
1824 x 1024 (1.9 MP, 16:9),
3888 x 3888 (15.1 MP, 1:1),
2784 x 2784 (7.8 MP, 1:1),
1968 x 1968 (3.9 MP, 1:1),
1712 x 1712 (2.9 MP, 1:1)
Image File Format: JPEG (EXIF 2.2) JPEG (EXIF 2.31), RAW, RAW + JPEG
Continuous-mode frames/second: n/a 9.2
Video Capture
Can take movies: Yes Yes
Movie Resolution: 640x480 (30)
320x240 (30)
3840x2160 (30p/​24p)
1920x1080 (60p/​60i/​30p/​24p)
1280x720 (30p)
Movie File Format: AVI (DivX MPEG-4) AVCHD (Audio format: Dolby Digital 2ch) / MP4 (Audio format AAC 2ch)
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: n/a
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: n/a Micro Four Thirds
Lens: SMC Pentax Zoom (7 elements in 5 groups, 3 aspherical) Panasonic Lumix G Vario 12-60mm F3.5 - 5.6 Asph. Power OIS (H-FS12060)
Focal Length (35mm equivalent): 37 - 111mm 24 - 120mm
Focal Length (actual): 7.9 - 23.7mm 12 - 60mm
Zoom Ratio: 3.00x 5.00x
Aperture Range: f/2.8 (wide) - f/5.4 (tele) - ??? f/3.5 (W) / f/5.6 (T) - f/22
Integrated ND Filter: No No
Normal Focus Range: 35 cm to Infinity
13.8 in to Infinity
20 cm to Infinity
7.9 in to Infinity
Macro Focus Range: 6 - 40 cm
2.4 - 15.7 in
 
Filter Thread: n/a 58.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: Yes Yes
Digital Zoom Values: Up to 6x 2x, 4x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 5 point Contrast Detect AF; spot, tracking, and face recognition Contrast Detection with DFD: Face/Eye detection, Tracking, 49-area, Custom Multi, 1-area, Pinpoint; One Shot AF, Shutter AF, Half Press Release, Quick AF, Continuous AF (during motion picture recording), Eye Sensor AF, AF+MF, MF Assist, Touch MF Assist, Focus Peaking, Touch AF/AE Function, Touch Pad AF, Touch Shutter
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: LCD EVF / LCD
Viewfinder Type:   Tilting 2760k-dot equivalent (field sequential) LCD, 1.39x / 0.70x (35mm eq.) magnification, 17.5mm eyepoint, -4 to +3 diopter, eye sensor
Focus Peaking: No Yes
EVF Resolution: n/a 920,000 dots
Viewfinder Magnification (35mm equivalent):   0.70x
Viewfinder Magnification (nominal/claimed):   1.39x
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.5 3.0
Rear Display Resolution: 232,000 dots 1,240,000 dots (413,300 px)
Touchscreen: No Yes
Articulating Screen: No Yes
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 8.0x 16.0x
Top Deck Display: No
Exposure
Maximum ISO (native):   25600
Minimum ISO (native):   200
ISO Settings: Auto, 50, 100, 200, 400, 800, 1600, 3200 (auto up to 3200 in Digital SR mode) Auto, iISO, 100 (extended), 200 - 25600; in 1 or 1/3 EV steps
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Tungsten, Fluorescent, Manual Auto, Daylight, Cloudy, Shade, Incandescent, Flash, White Set 1-4, Color Temperature Setting (2,500-10,000K in 100K steps)
Shutter Speed Range: 1/2000 - 4 sec 1/16000 - 60 sec
Bulb Mode: No Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: TTL metering: Multi-segment, Center-weighted, Spot 1728-zone Intelligent Multiple, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: No Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Natural Skin Tone, Half-length Portrait (3MP), Night Scene, Landscape, Flower, Portrait, Kids, Digital SR (5MP), Surf & Snow, Sport, Pet, Text, Food, Frame Composite (3MP), Dynamic Range Adjustment Sweep Panorama (Standard/Wide); Creative Control: Expressive, Retro, Old Days, High Key, Low Key, Sepia, L. Monochrome D, Monochrome, Dynamic Monochrome, Rough Monochrome, Silky Monochrome, Impressive Art, High Dynamic, Cross Process, Toy Effect, Toy Pop, Bleach Bypass, Miniature Effect, Soft Focus, Fantasy, Star Filter, One Point Color, Sunshine
Self Timer: 2 or 10 seconds 2, 10, 3 shots in 10 seconds
Time Lapse (intervalometer):   Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: On, Off, Auto, Redeye, Soft Flash Auto, Auto/Red-eye Reduction, Forced On, Forced On/Red-eye Reduction, Slow Sync., Slow Sync./Red-eye Reduction, Forced Off; 1st. Curtain Sync, 2nd Curtain Sync.
Flash Guide Number (ISO 100): n/a 4.2 m / 13.8 ft.
Flash Range Description: Auto ISO: Wide: 0.20 - 23 ft (0.06 – 7.1 m); Tele: Approx. 1.15 – 11 ft (0.35 – 3.5 m) GN=6.0m (ISO 200)
Max Flash Sync:   1/200
Flash Exposure Compensation:   +/- 3.0 EV in 0.3EV steps
External Flash Connection: n/a Hot Shoe
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No Yes
Uncompressed Format:   RAW, RAW + JPEG
Movie File Format: AVI (DivX MPEG-4) AVCHD (Audio format: Dolby Digital 2ch) / MP4 (Audio format AAC 2ch)
Included Memory: 21.0 MB No memory included
Included Memory Type: Internal  
Connectivity
Built-In Wi-Fi: No Yes
NFC: No No
Bluetooth: No Yes
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed,Bluetooth,WiFi
PictBridge Compliant: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: IR, optional Wi-Fi and Bluetooth
Connections (extended): DC input Micro HDMI (Type-D), Micro-B USB 2.0 port
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   <0.3
Cycle time for RAW shooting in single shot mode (seconds per frame):    
Buffer size for RAW shooting in single shot mode (frames):    
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   <0.3
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution):   9.2
Buffer size for JPEG shooting in burst mode (frames, max resolution):   140
RAW shooting speed in burst mode (fps):   9.1
Buffer size for RAW shooting in burst mode (frames):   32
RAW+JPEG shooting speed in burst mode (fps):   9.2
Buffer Size for RAW+JPEG shooting in burst mode (frames):   29
Shutter lag (full AF, wide/mid):   0.15 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):   0.060 seconds
Shutter lag (full AF, with flash):   0.36 seconds
Shutter Lag (prefocused):   0.050 seconds
Shutter Lag (notes):    
Startup Time:   1.0 seconds
Play -> Record Time:   0.5 seconds
Flash cycle time, full power:   1.5 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 240 shots 260 shots
Battery Life, Still (CIPA Rating OVF/EVF):   250 shots
Battery Life, Video:   70 minutes
Battery Form Factor: Proprietary D-LI68 Proprietary
Usable Battery Types: Lithium Ion rechargeable 7.2v, 1200mAh Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI68 Lithium Ion rechargeable 1 x Proprietary Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: No
Software
Included Software: Software (S-SW69) CD-ROM  
OS Compatibility: Windows, Mac OS  
Miscellaneous
Notes & Features: Available in black or silver.