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Panasonic GX9 vs Pentax S1

Portability
82
Imaging
60
Features
80
Overall
68
Panasonic Lumix DC-GX9 front
 
Pentax Optio S1 front
Portability
93
Imaging
37
Features
31
Overall
34

Panasonic GX9 vs Pentax S1 Key Specs

Panasonic GX9
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Tilting Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 3840 x 2160 video
  • Micro Four Thirds Mount
  • 407g - 124 x 72 x 47mm
  • Launched February 2018
Pentax S1
(Full Review)
  • 14MP - 1/2.3" Sensor
  • 2.7" Fixed Screen
  • ISO 80 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 28-140mm (F3.5-5.5) lens
  • 157g - 114 x 58 x 28mm
  • Announced March 2011
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Panasonic GX9 vs Pentax S1 Overview

Let's look more closely at the Panasonic GX9 vs Pentax S1, one being a Advanced Mirrorless and the latter is a Small Sensor Compact by companies Panasonic and Pentax. There exists a sizeable gap between the sensor resolutions of the GX9 (20MP) and S1 (14MP) and the GX9 (Four Thirds) and S1 (1/2.3") possess totally different sensor measurements.

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The GX9 was manufactured 7 years later than the S1 and that is quite a large gap as far as technology is concerned. Both of the cameras come with different body type with the Panasonic GX9 being a Rangefinder-style mirrorless camera and the Pentax S1 being a Compact camera.

Before going through a detailed comparison, below is a simple summary of how the GX9 matches up against the S1 when it comes to portability, imaging, features and an overall grade.

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Reasons to pick Panasonic GX9 over the Pentax S1

 GX9 S1 
AnnouncedFebruary 2018March 2011More recent by 85 months
Screen typeTiltingFixed Tilting screen
Screen dimension3"2.7"Bigger screen (+0.3")
Screen resolution1240k230kCrisper screen (+1010k dot)
Touch screen Quickly navigate

Reasons to pick Pentax S1 over the Panasonic GX9

 S1 GX9 

Common features in the Panasonic GX9 and Pentax S1

 GX9 S1 
Focus manually Dial exact focusing
Selfie screen Missing selfie screen

Panasonic GX9 vs Pentax S1 Physical Comparison

If you're planning to lug around your camera regularly, you will need to think about its weight and proportions. The Panasonic GX9 enjoys outer measurements of 124mm x 72mm x 47mm (4.9" x 2.8" x 1.9") and a weight of 407 grams (0.90 lbs) and the Pentax S1 has measurements of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") having a weight of 157 grams (0.35 lbs).

Examine the Panasonic GX9 vs Pentax S1 in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are working with at that moment. Underneath is the front view physical size comparison of the GX9 against the S1.

Panasonic GX9 vs Pentax S1 size comparison

Taking into account dimensions and weight, the portability grade of the GX9 and S1 is 82 and 93 respectively.

Panasonic GX9 vs Pentax S1 top view buttons comparison

Panasonic GX9 vs Pentax S1 Sensor Comparison

More often than not, it is tough to see the difference between sensor measurements simply by reading through technical specs. The graphic here should provide you a stronger sense of the sensor measurements in the GX9 and S1.

As you have seen, both of the cameras have got different megapixel count and different sensor measurements. The GX9 featuring a bigger sensor will make shooting shallower DOF simpler and the Panasonic GX9 will give you more detail due to its extra 6 Megapixels. Higher resolution will make it easier to crop shots much more aggressively. The younger GX9 will have an advantage with regard to sensor tech.

Panasonic GX9 vs Pentax S1 sensor size comparison

Panasonic GX9 vs Pentax S1 Screen and ViewFinder

Panasonic GX9 vs Pentax S1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Panasonic GX9 Portrait photography advice
Pentax S1 Portrait photography advice
76
you can focus manually
good megapixels (20MP)
nice sensor size (Four Thirds)
has face detection autofocus
exports RAW formats
35
you can focus manually
MP count good (14MP)
manual mode not available
can't use external flash
sensor is very small (1/2.3")
has no RAW support
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Street Comparison

Panasonic GX9 as a Street photography camera
Pentax S1 as a Street photography camera
84
tilting screen
has image stabilization (Sensor based 5-axis)
nice sensor size (Four Thirds)
exports RAW formats
provides focus by touch
very good ISO range (25,600)
56
image stabilization (Sensor-shift)
fixed screen
sensor is very small (1/2.3")
has no RAW support
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Sports Comparison

Sports photography with Panasonic GX9
Sports photography with Pentax S1
72
quiet mode (1/16,000s)
has image stabilization (Sensor based 5-axis)
good megapixels (20MP)
nice sensor size (Four Thirds)
has tracking autofocus
comes with phase detect autofocus
terrible battery power (260 per charge)
39
image stabilization (Sensor-shift)
MP count good (14 megapixels)
has tracking autofocus
max frames per second very slow (1.0 frames/s)
no shutter priority mode
sensor is very small (1/2.3")
has no phase detect autofocus
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Travel Comparison

Panasonic GX9 Travel photography information
Pentax S1 Travel photography information
71
has bluetooth
provides focus by touch
good megapixels (20 megapixels)
flash built-in
terrible battery power (260 CIPA)
doesn't feature selfie friendly display
64
MP count good (14MP)
flash built-in
relatively wide (28mm)
doesn't have Time Lapse recording
display is not selfie friendly
sluggish max aperture (f3.5)
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Landscape Comparison

Panasonic GX9 Landscape photography highlights
Pentax S1 Landscape photography highlights
77
you can focus manually
interchangeable lenses (Micro Four Thirds mount)
good sized screen (3")
has image stabilization (Sensor based 5-axis)
good megapixels (20 megapixels)
nice sensor size (Four Thirds)
no anti-alias filter
very good ISO range (25,600)
exports RAW formats
terrible battery power (260 per charge)
42
you can focus manually
relatively wide (28mm)
image stabilization (Sensor-shift)
MP count good (14MP)
can't change lens (fixed lens mount)
sluggish max aperture (f3.5)
small screen (2.7 inch)
manual mode not available
sensor is very small (1/2.3")
has no RAW support
doesn't have Time Lapse recording
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Vlogging Comparison

Panasonic GX9 Vlogging info
Pentax S1 Vlogging info
35
has touchscreen
has image stabilization (Sensor based 5-axis)
has face detection autofocus
great video quality (3840 x 2160 resolution)
doesn't feature selfie friendly display
lack of external microphone port
28
relatively wide (28mm)
image stabilization (Sensor-shift)
sluggish max aperture (f3.5)
display is not selfie friendly
video quality not great (1280 x 720 pxls)
doesn't have external mic socket
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Panasonic GX9 vs Pentax S1 Specifications

Detailed spec comparison table for Panasonic GX9 and Pentax S1
 Panasonic Lumix DC-GX9Pentax Optio S1
General Information
Brand Name Panasonic Pentax
Model type Panasonic Lumix DC-GX9 Pentax Optio S1
Type Advanced Mirrorless Small Sensor Compact
Launched 2018-02-13 2011-03-02
Physical type Rangefinder-style mirrorless Compact
Sensor Information
Powered by Venus Engine -
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor dimensions 17.3 x 13mm 6.17 x 4.55mm
Sensor surface area 224.9mm² 28.1mm²
Sensor resolution 20MP 14MP
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3 and 16:9
Full resolution 5184 x 3888 4288 x 3216
Max native ISO 25600 6400
Minimum native ISO 200 80
RAW files
Minimum boosted ISO 100 -
Autofocusing
Focus manually
AF touch
AF continuous
AF single
AF tracking
AF selectice
Center weighted AF
Multi area AF
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 49 9
Lens
Lens mount type Micro Four Thirds fixed lens
Lens zoom range - 28-140mm (5.0x)
Maximal aperture - f/3.5-5.5
Macro focusing range - 1cm
Number of lenses 107 -
Focal length multiplier 2.1 5.8
Screen
Display type Tilting Fixed Type
Display diagonal 3" 2.7"
Display resolution 1,240 thousand dots 230 thousand dots
Selfie friendly
Liveview
Touch function
Display technology - TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder type Electronic None
Viewfinder resolution 2,760 thousand dots -
Viewfinder coverage 100% -
Viewfinder magnification 0.7x -
Features
Slowest shutter speed 60 seconds 4 seconds
Maximum shutter speed 1/4000 seconds 1/1500 seconds
Maximum quiet shutter speed 1/16000 seconds -
Continuous shooting rate 9.0 frames per sec 1.0 frames per sec
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes -
Custom WB
Image stabilization
Integrated flash
Flash distance 6.00 m (at ISO 200) 3.90 m
Flash modes Auto, auto w/redeye reduction, forced on, forced on w/redeye reduction, slow sync, slow sync w/redeye reduction, forced off Auto, On, Off, Red-eye, Soft
Hot shoe
Auto exposure bracketing
WB bracketing
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions - 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 3840x2160 1280x720
Video data format MPEG-4, AVCHD, H.264 Motion JPEG
Mic port
Headphone port
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB Yes USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 407g (0.90 pounds) 157g (0.35 pounds)
Dimensions 124 x 72 x 47mm (4.9" x 2.8" x 1.9") 114 x 58 x 28mm (4.5" x 2.3" x 1.1")
DXO scores
DXO All around rating not tested not tested
DXO Color Depth rating not tested not tested
DXO Dynamic range rating not tested not tested
DXO Low light rating not tested not tested
Other
Battery life 260 shots 260 shots
Battery type Battery Pack Battery Pack
Battery ID - D-LI92
Self timer Yes (2 or 10 secs, 3 photos over 10 secs) Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC/SDXC card (UHS-I supported) SD/SDHC/SDXC, Internal
Card slots 1 1
Retail cost $1,000 $174