Pentax K-3 II vs Samsung GX-20
59 Imaging
66 Features
84 Overall
73


58 Imaging
53 Features
52 Overall
52
Pentax K-3 II vs Samsung GX-20 Key Specs
(Full Review)
- 24MP - APS-C Sensor
- 3.2" Fixed Screen
- ISO 100 - 51200
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/8000s Maximum Shutter
- 1920 x 1080 video
- Pentax KAF2 Mount
- 800g - 131 x 100 x 77mm
- Released April 2015
- Previous Model is Pentax K-3
(Full Review)
- 15MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 3200 (Boost to 6400)
- Sensor based Image Stabilization
- No Video
- Pentax KAF2 Mount
- 800g - 142 x 101 x 72mm
- Announced January 2008
- Replaced the Samsung GX-10

Pentax K-3 II vs Samsung GX-20 Overview
Let's look a bit more in depth at the Pentax K-3 II vs Samsung GX-20, both Advanced DSLR cameras by competitors Pentax and Samsung. There is a significant difference among the image resolutions of the K-3 II (24MP) and GX-20 (15MP) but both cameras posses the same sensor sizing (APS-C).

The K-3 II was launched 7 years later than the GX-20 and that is a fairly sizable gap as far as camera tech is concerned. The two cameras have the same body design (Mid-size SLR).
Before diving right into a comprehensive comparison, here is a quick highlight of how the K-3 II grades against the GX-20 with regards to portability, imaging, features and an overall rating.

Pentax K-3 II vs Samsung GX-20 Gallery
This is a preview of the gallery photos for Pentax K-3 II and Samsung GX-20. The complete galleries are available at Pentax K-3 II Gallery and Samsung GX-20 Gallery.
Reasons to pick Pentax K-3 II over the Samsung GX-20
K-3 II | GX-20 | |||
---|---|---|---|---|
Announced | April 2015 | ![]() | January 2008 | Fresher by 89 months |
Screen dimensions | 3.2" | ![]() | 2.7" | Bigger screen (+0.5") |
Screen resolution | 1037k | ![]() | 230k | Crisper screen (+807k dot) |
Reasons to pick Samsung GX-20 over the Pentax K-3 II
GX-20 | K-3 II |
---|
Common features in the Pentax K-3 II and Samsung GX-20
K-3 II | GX-20 | |||
---|---|---|---|---|
Focus manually | ![]() | More exact focusing | ||
Screen type | Fixed | ![]() | Fixed | Fixed screen |
Selfie screen | ![]() | Neither includes selfie screen | ||
Touch screen | ![]() | Neither includes Touch screen |
Pentax K-3 II vs Samsung GX-20 Physical Comparison
If you're looking to carry your camera frequently, you will want to consider its weight and measurements. The Pentax K-3 II features outer measurements of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") and a weight of 800 grams (1.76 lbs) and the Samsung GX-20 has proportions of 142mm x 101mm x 72mm (5.6" x 4.0" x 2.8") and a weight of 800 grams (1.76 lbs).
See the Pentax K-3 II vs Samsung GX-20 in the latest Camera and Lens Size Comparison Tool.
Remember that, the weight of an Interchangeable Lens Camera will vary depending on the lens you choose during that time. The following is a front view measurements comparison of the K-3 II compared to the GX-20.

Using size and weight, the portability score of the K-3 II and GX-20 is 59 and 58 respectively.

Pentax K-3 II vs Samsung GX-20 Sensor Comparison
Generally, it is very hard to picture the difference in sensor sizing purely by checking out specifications. The visual here will help provide you a much better sense of the sensor sizing in the K-3 II and GX-20.
To sum up, the 2 cameras provide the same sensor dimensions albeit different MP. You should count on the Pentax K-3 II to produce greater detail utilizing its extra 9 Megapixels. Higher resolution will make it easier to crop shots more aggressively. The newer K-3 II provides an advantage in sensor tech.

Pentax K-3 II vs Samsung GX-20 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Pentax K-3 II vs Samsung GX-20 Specifications
Pentax K-3 II | Samsung GX-20 | |
---|---|---|
General Information | ||
Brand Name | Pentax | Samsung |
Model | Pentax K-3 II | Samsung GX-20 |
Class | Advanced DSLR | Advanced DSLR |
Released | 2015-04-23 | 2008-01-24 |
Body design | Mid-size SLR | Mid-size SLR |
Sensor Information | ||
Processor Chip | Prime III | - |
Sensor type | CMOS | CMOS |
Sensor size | APS-C | APS-C |
Sensor dimensions | 23.5 x 15.6mm | 23.4 x 15.6mm |
Sensor surface area | 366.6mm² | 365.0mm² |
Sensor resolution | 24MP | 15MP |
Anti aliasing filter | ||
Aspect ratio | 3:2 | - |
Highest resolution | 6016 x 4000 | 4688 x 3120 |
Highest native ISO | 51200 | 3200 |
Highest boosted ISO | - | 6400 |
Lowest native ISO | 100 | 100 |
RAW photos | ||
Autofocusing | ||
Focus manually | ||
Autofocus touch | ||
Autofocus continuous | ||
Autofocus single | ||
Tracking autofocus | ||
Autofocus selectice | ||
Autofocus center weighted | ||
Multi area autofocus | ||
Live view autofocus | ||
Face detection focus | ||
Contract detection focus | ||
Phase detection focus | ||
Number of focus points | 27 | 11 |
Cross focus points | 25 | - |
Lens | ||
Lens mount | Pentax KAF2 | Pentax KAF2 |
Total lenses | 151 | 151 |
Focal length multiplier | 1.5 | 1.5 |
Screen | ||
Screen type | Fixed Type | Fixed Type |
Screen diagonal | 3.2" | 2.7" |
Resolution of screen | 1,037 thousand dot | 230 thousand dot |
Selfie friendly | ||
Liveview | ||
Touch friendly | ||
Viewfinder Information | ||
Viewfinder type | Optical (pentaprism) | Optical (pentaprism) |
Viewfinder coverage | 100% | 95% |
Viewfinder magnification | 0.64x | 0.64x |
Features | ||
Slowest shutter speed | 30s | 30s |
Maximum shutter speed | 1/8000s | 1/4000s |
Continuous shooting speed | 8.3fps | 3.0fps |
Shutter priority | ||
Aperture priority | ||
Expose Manually | ||
Exposure compensation | Yes | Yes |
Change white balance | ||
Image stabilization | ||
Inbuilt flash | ||
Flash range | no built-in flash | 13.00 m (at ISO 100) |
Flash modes | Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync (available with dedicated external flash) | Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless |
Hot shoe | ||
AE bracketing | ||
White balance bracketing | ||
Maximum flash sync | 1/180s | 1/180s |
Exposure | ||
Multisegment exposure | ||
Average exposure | ||
Spot exposure | ||
Partial exposure | ||
AF area exposure | ||
Center weighted exposure | ||
Video features | ||
Video resolutions | 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p) | - |
Highest video resolution | 1920x1080 | None |
Video data format | MPEG-4, H.264 | - |
Mic jack | ||
Headphone jack | ||
Connectivity | ||
Wireless | Optional | None |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | USB 3.0 (5 GBit/sec) | USB 2.0 (480 Mbit/sec) |
GPS | BuiltIn | None |
Physical | ||
Environmental seal | ||
Water proof | ||
Dust proof | ||
Shock proof | ||
Crush proof | ||
Freeze proof | ||
Weight | 800g (1.76 lb) | 800g (1.76 lb) |
Physical dimensions | 131 x 100 x 77mm (5.2" x 3.9" x 3.0") | 142 x 101 x 72mm (5.6" x 4.0" x 2.8") |
DXO scores | ||
DXO All around score | 80 | 68 |
DXO Color Depth score | 23.6 | 23.1 |
DXO Dynamic range score | 13.6 | 11.2 |
DXO Low light score | 1106 | 714 |
Other | ||
Battery life | 720 images | - |
Battery form | Battery Pack | - |
Battery model | D-LI90 | - |
Self timer | Yes ( 2 or 12 seconds) | Yes (2 or 10 sec) |
Time lapse shooting | ||
Type of storage | Dual SD/SDHC/SDXC | SD/MMC/SDHC card |
Storage slots | Two | 1 |
Launch cost | $829 | $850 |