Size and weight is a big decision factor when you are trying to find the ideal camera for your needs.
In this section, We are going to illustrate Canon G1 X III and Pentax K-S1 side-by-side from the front, back and top in their relative dimensions. Canon G1 X III has external dimensions of 115 x 78 x 51 mm (4.53 x 3.07 x 2.01″) and weighs 399 g (0.88 lb / 14.07 oz) (including batteries). Pentax K-S1 has external dimensions of 121 x 93 x 70 mm (4.76 x 3.66 x 2.76″) and weighs 558 g (1.23 lb / 19.68 oz) (including batteries).
Below you can see the front view size comparison of Canon G1 X III and Pentax K-S1. Canon G1 X III is clearly the smaller of the two cameras. Its body is 6mm narrower, 15mm shorter and 19mm thinner than Pentax K-S1. As you can tell, actually this is not a fair size comparison since Canon G1 X III has a built-in lens but Pentax K-S1 doesn't. Once you put a lens on K-S1, its thickness will increase significantly.
![Canon G1 X III vs Pentax K-S1 Camera Size Comparison - Front View]()
Comparison image of Canon G1 X III and Pentax K-S1 Size, Weight and External Dimensions - Front View
Here is the back view size comparison of Canon G1 X III and Pentax K-S1.
![Canon G1 X III vs Pentax K-S1 Camera Size Comparison - Back View]()
Comparison image of Canon G1 X III and Pentax K-S1 Size and Weight - Back View
Now lets look at the top view comparison of Canon G1 X III and Pentax K-S1.
![Canon G1 X III vs Pentax K-S1 Camera Size Comparison - Top View]()
Top View Comparison image of Canon G1 X III and Pentax K-S1 Size
Weight is another important factor especially when deciding on a camera that you want to carry with you all day.
Canon G1 X III is significantly lighter (159g ) than the Pentax K-S1 which may become a big advantage especially on long walking trips.
Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on K-S1, the total kit will weigh much higher.
Weather Sealing
With its weather sealed body, we believe that G1 X III has a big advantage over K-S1 which doesn't provide any kind of environmental sealing.
LCD Screen Size and Features
Canon G1 X III and Pentax K-S1's LCD screens has the same diagonal size of 3.
On the other hand, Canon G1 X III sports a
Fully Articulated screen which you can change the angle and position of the screen almost freely, making it possible to shoot from waist or over the head levels, and especially very useful for shooting selfies and video. Pentax K-S1's LCD screen is a fixed type which provides almost no flexibility in shooting positions compared to G1 X III.
Canon G1 X III has a 24.0MP APS-C (22.3 x 14.9 mm ) sized CMOS sensor and features DIGIC 7 processor. On the other hand, Pentax K-S1 has a 20.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features Prime MII processor.
One other difference between these two cameras that is worth mentioning is that Pentax K-S1's sensor doesn't have an anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.
Below you can see the G1 X III and K-S1 sensor size comparison.
![Canon G1 X III vs Pentax K-S1 Sensor Size Comparison]()
Sensor Size and Resolution Comparison image of Canon G1 X III and Pentax K-S1 Cameras
As seen above, Pentax K-S1 has a 1.1x Larger sensor area than Canon G1 X III. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.
In this section, we rank and compare Canon G1 X III and Pentax K-S1 for five different photography types in order to make your decision process easier in case you are specifically interested in one or more of these areas.
Canon G1 X III for Portrait Photography
Pentax K-S1 for Portrait Photography
Large APS-C (22.3 x 14.9 mm) sensor
Very High Resolution Sensor: 24.0MP
Image Stabilization
External Flash Shoe
Electronic Built-in Viewfinder
Not so good Ergonomics&Handling
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Very High Resolution Sensor: 20.0MP
Image Stabilization
Optical Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Canon G1 X III for Street Photography
Pentax K-S1 for Street Photography
Large APS-C (22.3 x 14.9 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Small Body
Live-view
Face-Detection Focusing
Fully Articulated LCD Screen
Fast Lens at Wide: f2.80
24 mm - Good Wide Angle Coverage
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Image Stabilization
Optical Built-in Viewfinder
Live-view
Face-Detection Focusing
Large Body
Read the details
Canon G1 X III for Sports Photography
Pentax K-S1 for Sports Photography
Image Stabilization
External Flash Shoe
Electronic Built-in Viewfinder
Fast Continuous Shooting: 9.0fps
Environmental Sealings
49 Focus Points
Wireless Connection
Average Max shutter speed: 1/2000s
Not so good Ergonomics&Handling
Poor Battery Life: 200 shots
72 mm Tele Lens
Read the details
Image Stabilization
Optical Built-in Viewfinder
Good Ergonomics&Handling
Fast Max shutter speed: 1/6000s
11 Focus Points
Good Low Light ISO
Average Continuous Shooting: 5.4fps
Environmental Sealings
Read the details
Canon G1 X III for Daily Photography
Pentax K-S1 for Daily Photography
Large APS-C (22.3 x 14.9 mm) sensor
Compact Body
Environmental Sealings
399g
Body Thickness 51mm
3.0X Optical Zoom
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Large Body
558g
Body Thickness 70mm
Read the details
Canon G1 X III for Landscape Photography
Pentax K-S1 for Landscape Photography
Large APS-C (22.3 x 14.9 mm) sensor
Very High Resolution Sensor: 24.0MP
24 mm - Good Wide Angle Coverage
Environmental Sealings
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Very High Resolution Sensor: 20.0MP
Live-view
No Environmental Sealings
Read the details
You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Canon G1 X III and Pentax K-S1, below you can find their scores in five different aspects.
Our Decision Algorithm dynamically scores cameras using 63 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.
Here is a summary of how Canon G1 X III and Pentax K-S1 scores compare:
Canon G1 X III
Ranked
#6 out of 61 in Large sensor compact cameras
Ranked
#134 out of 1220 in all Cameras
Pentax K-S1
Ranked
#40 out of 94 in Mid-size SLR cameras
Ranked
#197 out of 1220 in all Cameras
Canon G1 X III has a higher Overall Score than the Pentax K-S1. It also has more features, more compact body and offers higher value for the money. But there is one area that G1 X III trails behind the K-S1: Imaging.
If image quality is the most important aspect in a camera, choose the Pentax K-S1. If not, we recommend the Canon G1 X III.
| General |
Canon PowerShot G1 X Mark III |
Pentax K-S1 |
| Brand |
Canon |
Pentax |
| Announced |
2017-10-25 |
2014-08-27 |
| Body Type |
Large sensor compact |
Mid-size SLR |
Sensor |
|
|
| Type |
CMOS |
CMOS |
| Size |
APS-C |
APS-C |
| Dimensions |
22.3 x 14.9 mm |
23.5 x 15.6 mm |
| Area |
332.27mm2 |
366.60mm2 |
| Megapixels |
24 megapixels |
20 megapixels |
| Max Resolution |
6000 x 4000 |
5472 x 3648 |
| Max Native Light sensitivity |
25,600 ISO |
51,200 ISO |
| Min Native Light sensitivity |
100 ISO |
100 ISO |
| RAW Support |
|
|
Autofocus |
|
|
| AF Touch |
|
|
| AF Continuous |
|
|
| AF Single |
|
|
| AF Tracking |
|
|
| AF Selective |
|
|
| AF Center |
|
|
| AF Multi Area |
|
|
| AF Live View |
|
|
| AF Face Detection |
|
|
| AF Contrast Detection |
|
|
| AF Phase Detection |
|
|
| Number of Focus Points |
49 |
11 |
Lens |
|
|
| Manual Focus |
|
|
| Lens Mount |
fixed lens |
Pentax KAF2 |
| Lens Focal Range |
24-72 mm (3x) |
no lens |
| Max Aperture |
F2.8-5.6 |
no lens |
| Macro Focus Range |
10cm |
no lens |
Screen |
|
|
| Type |
Fully Articulated |
Fixed type |
| Size |
3 |
3" |
| Resolution |
1,040k dots |
921k dots |
| Touch Screen |
|
|
Viewfinder |
|
|
| Viewfinder |
Electronic |
Optical (pentaprism) |
| Viewfinder Resolution |
2,360k dots |
no electronic viewfinder |
| Viewfinder Coverage |
100% |
100% |
| Viewfinder Magnification |
n/a |
0.64x |
Photography Features |
|
|
| Max Mechanical Shutter |
1/2000s |
1/6000s |
| Shutter Priority |
|
|
| Aperture Priority |
|
|
| Manual Exposure Mode |
|
|
| Custom White Balance |
|
|
| Image Stabilization |
Optical |
Sensor-shift |
| Built-in Flash |
|
|
| Flash Range |
9.00 m (at Auto ISO) |
10.00 m (at ISO 100) |
| External Flash |
|
|
| Continuous Shooting |
9.0 fps |
5.4 fps |
| Multi-Segment |
|
|
| Average |
|
|
| Spot |
|
|
| Partial |
|
|
| AF-Area |
|
|
| Center Weighted |
|
|
| AE Bracketing |
|
|
| WB Bracketing |
|
|
Video Features |
|
|
| Max Video Resolution |
1920 x 1080 |
1920 x 1080 |
| Video Formats |
MPEG-4, H.264 |
H.264 |
| Microphone Port |
|
|
| Headphone Port |
|
|
Connectivity |
|
|
| Wireless Connectivity |
Built-In |
Eye-Fi Connected |
| HDMI |
|
|
Physical |
|
|
| Environmental Sealing |
|
|
| Weight |
399g |
558g |
| Dimensions |
115 x 78 x 51mm |
121 x 93 x 70mm |
| Battery Life |
200 shots |
410 shots |
Other Features |
|
|
| Timelapse Recording |
|
|
| GPS |
None |
Optional |
DxO Sensor Scores |
|
|
| DxO Overall Score |
not tested |
78 |
| DxO Color Depth |
not tested |
23.5 |
| DxO Dynamic Range |
not tested |
13.0 |
| DxO Low Light ISO |
not tested |
1061 |
|
Report a correction |
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