Pentax K-7 vs Sony G3
60 Imaging
54 Features
69 Overall
60


94 Imaging
32 Features
30 Overall
31
Pentax K-7 vs Sony G3 Key Specs
(Full Review)
- 15MP - APS-C Sensor
- 3" Fixed Display
- ISO 100 - 2000 (Expand to 6400)
- Sensor based Image Stabilization
- 1/8000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 750g - 131 x 97 x 73mm
- Released October 2009
- Newer Model is Pentax K-5
(Full Review)
- 10MP - 1/2.3" Sensor
- 3.5" Fixed Display
- ISO 80 - 3200
- Optical Image Stabilization
- 640 x 480 video
- 35-140mm (F3.5-10.0) lens
- 185g - 97 x 59 x 22mm
- Released January 2009

Pentax K-7 vs Sony G3 Overview
The following is a thorough overview of the Pentax K-7 and Sony G3, one is a Advanced DSLR and the other is a Small Sensor Compact by brands Pentax and Sony. There is a big difference among the image resolutions of the K-7 (15MP) and G3 (10MP) and the K-7 (APS-C) and G3 (1/2.3") posses totally different sensor sizes.

The K-7 was launched 9 months after the G3 so they are of a similar generation. Both of the cameras have different body design with the Pentax K-7 being a Mid-size SLR camera and the Sony G3 being a Compact camera.
Before getting straight to a more detailed comparison, here is a concise summation of how the K-7 matches up versus the G3 when considering portability, imaging, features and an overall mark.

Pentax K-7 vs Sony G3 Gallery
Here is a sample of the gallery pictures for Pentax K-7 and Sony Cyber-shot DSC-G3. The complete galleries are provided at Pentax K-7 Gallery and Sony G3 Gallery.
Reasons to pick Pentax K-7 over the Sony G3
K-7 | G3 | |||
---|---|---|---|---|
Released | October 2009 | ![]() | January 2009 | Newer by 9 months |
Reasons to pick Sony G3 over the Pentax K-7
G3 | K-7 | |||
---|---|---|---|---|
Display dimensions | 3.5" | ![]() | 3" | Larger display (+0.5") |
Touch display | ![]() | Easily navigate |
Common features in the Pentax K-7 and Sony G3
K-7 | G3 | |||
---|---|---|---|---|
Manually focus | ![]() | More accurate focusing | ||
Display type | Fixed | ![]() | Fixed | Fixed display |
Display resolution | 921k | ![]() | 921k | Identical display resolution |
Selfie screen | ![]() | Lacking selfie screen |
Pentax K-7 vs Sony G3 Physical Comparison
For those who are looking to travel with your camera frequently, you should factor its weight and proportions. The Pentax K-7 enjoys outer measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") and a weight of 750 grams (1.65 lbs) and the Sony G3 has measurements of 97mm x 59mm x 22mm (3.8" x 2.3" x 0.9") having a weight of 185 grams (0.41 lbs).
Compare the Pentax K-7 and Sony G3 in the new Camera and Lens Size Comparison Tool.
Always remember, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at the time. Here is a front view dimension comparison of the K-7 compared to the G3.

Using size and weight, the portability rating of the K-7 and G3 is 60 and 94 respectively.

Pentax K-7 vs Sony G3 Sensor Comparison
Usually, it is very tough to visualise the difference in sensor dimensions merely by seeing specifications. The pic here will provide you a greater sense of the sensor measurements in the K-7 and G3.
To sum up, each of these cameras provide different megapixel count and different sensor dimensions. The K-7 because of its larger sensor will make getting shallow depth of field simpler and the Pentax K-7 will show more detail utilizing its extra 5 Megapixels. Greater resolution will also allow you to crop images more aggressively. The more modern K-7 is going to have an advantage in sensor technology.

Pentax K-7 vs Sony G3 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Pentax K-7 vs Sony G3 Specifications
Pentax K-7 | Sony Cyber-shot DSC-G3 | |
---|---|---|
General Information | ||
Make | Pentax | Sony |
Model type | Pentax K-7 | Sony Cyber-shot DSC-G3 |
Category | Advanced DSLR | Small Sensor Compact |
Released | 2009-10-02 | 2009-01-08 |
Body design | Mid-size SLR | Compact |
Sensor Information | ||
Powered by | Prime II | - |
Sensor type | CMOS | CCD |
Sensor size | APS-C | 1/2.3" |
Sensor measurements | 23.4 x 15.6mm | 6.17 x 4.55mm |
Sensor surface area | 365.0mm² | 28.1mm² |
Sensor resolution | 15MP | 10MP |
Anti alias filter | ||
Aspect ratio | 3:2 | 4:3, 3:2 and 16:9 |
Max resolution | 4672 x 3104 | 3648 x 2736 |
Max native ISO | 2000 | 3200 |
Max enhanced ISO | 6400 | - |
Lowest native ISO | 100 | 80 |
RAW pictures | ||
Autofocusing | ||
Focus manually | ||
Autofocus touch | ||
Continuous autofocus | ||
Single autofocus | ||
Tracking autofocus | ||
Autofocus selectice | ||
Autofocus center weighted | ||
Autofocus multi area | ||
Live view autofocus | ||
Face detect autofocus | ||
Contract detect autofocus | ||
Phase detect autofocus | ||
Total focus points | 11 | 9 |
Lens | ||
Lens mount type | Pentax KAF2 | fixed lens |
Lens zoom range | - | 35-140mm (4.0x) |
Largest aperture | - | f/3.5-10.0 |
Number of lenses | 151 | - |
Focal length multiplier | 1.5 | 5.8 |
Screen | ||
Range of display | Fixed Type | Fixed Type |
Display size | 3 inch | 3.5 inch |
Display resolution | 921k dot | 921k dot |
Selfie friendly | ||
Liveview | ||
Touch friendly | ||
Display tech | TFT color LCD with AR coating | - |
Viewfinder Information | ||
Viewfinder | Optical (pentaprism) | None |
Viewfinder coverage | 100 percent | - |
Viewfinder magnification | 0.61x | - |
Features | ||
Min shutter speed | 30 secs | 1 secs |
Max shutter speed | 1/8000 secs | 1/1000 secs |
Continuous shutter speed | 5.0 frames/s | 2.0 frames/s |
Shutter priority | ||
Aperture priority | ||
Manual exposure | ||
Exposure compensation | Yes | - |
Custom white balance | ||
Image stabilization | ||
Inbuilt flash | ||
Flash distance | 13.00 m | 4.30 m (Auto ISO) |
Flash modes | Auto, On, Off, Red-eye, Slow Sync, Rear Curtain, Wireless | Auto, On, Off, Red-Eye reduction, Slow Sync |
Hot shoe | ||
Auto exposure bracketing | ||
White balance bracketing | ||
Max flash sync | 1/180 secs | - |
Exposure | ||
Multisegment | ||
Average | ||
Spot | ||
Partial | ||
AF area | ||
Center weighted | ||
Video features | ||
Video resolutions | 1280 x 720 (30 fps), 1536 x 1024 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps) | 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) |
Max video resolution | 1280x720 | 640x480 |
Video file format | Motion JPEG | Motion JPEG |
Microphone jack | ||
Headphone jack | ||
Connectivity | ||
Wireless | None | None |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
GPS | None | None |
Physical | ||
Environmental seal | ||
Water proofing | ||
Dust proofing | ||
Shock proofing | ||
Crush proofing | ||
Freeze proofing | ||
Weight | 750g (1.65 lbs) | 185g (0.41 lbs) |
Physical dimensions | 131 x 97 x 73mm (5.2" x 3.8" x 2.9") | 97 x 59 x 22mm (3.8" x 2.3" x 0.9") |
DXO scores | ||
DXO Overall rating | 61 | not tested |
DXO Color Depth rating | 22.6 | not tested |
DXO Dynamic range rating | 10.6 | not tested |
DXO Low light rating | 536 | not tested |
Other | ||
Battery life | 980 shots | - |
Type of battery | Battery Pack | - |
Battery ID | D-LI90 | - |
Self timer | Yes (2 or 10 sec) | Yes (2 or 10 sec) |
Time lapse feature | ||
Type of storage | SD/SDHC/MMC | Memory Stick Duo/Pro Duo, Internal |
Storage slots | 1 | 1 |
Retail cost | $599 | $200 |