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Panasonic S1R vs Pentax K-x

Portability
54
Imaging
79
Features
84
Overall
81
Panasonic Lumix DC-S1R front
 
Pentax K-x front
Portability
69
Imaging
52
Features
47
Overall
50

Panasonic S1R vs Pentax K-x Key Specs

Panasonic S1R
(Full Review)
  • 47MP - Full frame Sensor
  • 3.2" Tilting Screen
  • ISO 100 - 25600 (Boost to 51200)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Leica L Mount
  • 1020g - 149 x 110 x 97mm
  • Announced February 2019
Pentax K-x
(Full Review)
  • 12MP - APS-C Sensor
  • 2.7" Fixed Display
  • ISO 100 - 6400 (Bump to 12800)
  • Sensor based Image Stabilization
  • 1/6000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 580g - 123 x 92 x 68mm
  • Announced December 2009
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Panasonic S1R vs Pentax K-x Overview

Below, we are reviewing the Panasonic S1R and Pentax K-x, one is a Pro Mirrorless and the other is a Entry-Level DSLR by rivals Panasonic and Pentax. There is a big difference among the resolutions of the S1R (47MP) and K-x (12MP) and the S1R (Full frame) and K-x (APS-C) enjoy different sensor sizing.

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The S1R was launched 9 years after the K-x which is a fairly big gap as far as camera tech is concerned. Each of the cameras come with different body type with the Panasonic S1R being a SLR-style mirrorless camera and the Pentax K-x being a Compact SLR camera.

Before diving in to a more detailed comparison, below is a brief overview of how the S1R grades vs the K-x in relation to portability, imaging, features and an overall mark.

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Reasons to pick Panasonic S1R over the Pentax K-x

 S1R K-x 
AnnouncedFebruary 2019December 2009Newer by 111 months
Display typeTiltingFixed Tilting display
Display dimension3.2"2.7"Larger display (+0.5")
Display resolution2100k230kCrisper display (+1870k dot)
Touch display Easily navigate

Reasons to pick Pentax K-x over the Panasonic S1R

 K-x S1R 

Common features in the Panasonic S1R and Pentax K-x

 S1R K-x 
Focus manually More exact focusing
Selfie screen Neither contains selfie screen

Panasonic S1R vs Pentax K-x Physical Comparison

When you are going to travel with your camera often, you are going to need to take into account its weight and dimensions. The Panasonic S1R has got outer measurements of 149mm x 110mm x 97mm (5.9" x 4.3" x 3.8") accompanied by a weight of 1020 grams (2.25 lbs) whilst the Pentax K-x has dimensions of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs).

Analyze the Panasonic S1R and Pentax K-x in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are employing at that time. Here is the front view dimensions comparison of the S1R versus the K-x.

Panasonic S1R vs Pentax K-x size comparison

Considering size and weight, the portability grade of the S1R and K-x is 54 and 69 respectively.

Panasonic S1R vs Pentax K-x top view buttons comparison

Panasonic S1R vs Pentax K-x Sensor Comparison

Generally, it is very hard to picture the gap in sensor dimensions merely by looking through specifications. The picture below may provide you a more clear sense of the sensor measurements in the S1R and K-x.

To sum up, both cameras posses different megapixels and different sensor dimensions. The S1R because of its larger sensor is going to make shooting shallow depth of field simpler and the Panasonic S1R will render extra detail utilizing its extra 35MP. Greater resolution will help you crop pics somewhat more aggressively. The newer S1R should have a benefit in sensor innovation.

Panasonic S1R vs Pentax K-x sensor size comparison

Panasonic S1R vs Pentax K-x Screen and ViewFinder

Panasonic S1R vs Pentax K-x Screen and Viewfinder comparison
Photography Glossary

Photography Type Scores

Portrait Comparison

Panasonic S1R Portrait photography information
Pentax K-x Portrait photography information
87
focusing manually
flash sync is higher than normal (1/320s)
high MP (47MP)
big sensor size (Full frame)
has face detection autofocus
supports RAW files
63
has manual focus
sensor size is decent (APS-C)
offers face detection autofocus
saves RAW formats
low MP (12 megapixels)
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Street Comparison

Panasonic S1R Street photography highlights
Pentax K-x Street photography highlights
71
tilting screen
has image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
supports RAW files
supports focus by touch
environment sealing
very good ISO range (25,600)
more heavy than average in class (1,020g)
67
has image stabilization (Sensor based)
sensor size is decent (APS-C)
saves RAW formats
screen is fixed
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Sports Comparison

Panasonic S1R as a Sports photography camera
Pentax K-x as a Sports photography camera
78
maximum shutter speed is high (1/8,000s)
quiet shutter (1/16,000s)
has image stabilization (Sensor based 5-axis)
high MP (47 megapixels)
big sensor size (Full frame)
has tracking autofocus
environment sealing
terrible battery pack (360 per charge)
doesn't have phase detect autofocus
61
high shutter speed (1/6,000 seconds)
has image stabilization (Sensor based)
sensor size is decent (APS-C)
good battery (1,900 shots)
sensor has phase detect autofocus
max frames per second low (5.0 frames/s)
low MP (12MP)
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Travel Comparison

Travel photography with Panasonic S1R
Travel photography with Pentax K-x
60
environment sealing
connects via bluetooth
supports focus by touch
high MP (47MP)
terrible battery pack (360 shots)
more heavy than average in class (1,020 grams)
display isn't selfie friendly
54
good battery (1,900 CIPA)
built-in flash
no Timelapse function
low MP (12 megapixels)
screen is not selfie friendly
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Landscape Comparison

Landscape photography with Panasonic S1R
Landscape photography with Pentax K-x
82
focusing manually
interchangeable lenses (Leica L mount)
screen is a good size (3.2 inches)
has image stabilization (Sensor based 5-axis)
high MP (47MP)
big sensor size (Full frame)
doesnt have low pass filter
very good ISO range (25,600)
supports RAW files
environment sealing
has double storage slots
terrible battery pack (360 CIPA)
61
has manual focus
change lenses (Pentax KAF2 mount)
has image stabilization (Sensor based)
sensor size is decent (APS-C)
saves RAW formats
good battery (1,900 shots)
screen is somewhat small (2.7 inches)
low MP (12MP)
no Timelapse function
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Vlogging Comparison

Panasonic S1R Vlogging info
Pentax K-x Vlogging info
32
touchscreen enabled
has image stabilization (Sensor based 5-axis)
has face detection autofocus
video res high (3840 x 2160 pixels)
comes with external microphone port
display isn't selfie friendly
more heavy than average in class (1,020 grams)
27
has image stabilization (Sensor based)
offers face detection autofocus
screen is not selfie friendly
low res video (1280 x 720 pixels)
no external microphone socket
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Panasonic S1R vs Pentax K-x Specifications

Detailed spec comparison table for Panasonic S1R and Pentax K-x
 Panasonic Lumix DC-S1RPentax K-x
General Information
Company Panasonic Pentax
Model type Panasonic Lumix DC-S1R Pentax K-x
Type Pro Mirrorless Entry-Level DSLR
Announced 2019-02-01 2009-12-23
Physical type SLR-style mirrorless Compact SLR
Sensor Information
Chip Venus Engine Prime
Sensor type CMOS CMOS
Sensor size Full frame APS-C
Sensor measurements 36 x 24mm 23.6 x 15.8mm
Sensor area 864.0mm² 372.9mm²
Sensor resolution 47 megapixel 12 megapixel
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Full resolution 8000 x 6000 4288 x 2848
Max native ISO 25600 6400
Max boosted ISO 51200 12800
Min native ISO 100 100
RAW format
Min boosted ISO 50 -
Autofocusing
Manual focusing
AF touch
AF continuous
AF single
AF tracking
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 225 11
Lens
Lens mount type Leica L Pentax KAF2
Amount of lenses 30 151
Focal length multiplier 1 1.5
Screen
Screen type Tilting Fixed Type
Screen size 3.2 inch 2.7 inch
Screen resolution 2,100 thousand dots 230 thousand dots
Selfie friendly
Liveview
Touch function
Screen tech - TFT LCD monitor
Viewfinder Information
Viewfinder Electronic Optical (pentamirror)
Viewfinder resolution 5,760 thousand dots -
Viewfinder coverage 100% 96%
Viewfinder magnification 0.78x 0.57x
Features
Slowest shutter speed 60 seconds 30 seconds
Maximum shutter speed 1/8000 seconds 1/6000 seconds
Maximum silent shutter speed 1/16000 seconds -
Continuous shooting rate 9.0fps 5.0fps
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Set WB
Image stabilization
Inbuilt flash
Flash distance no built-in flash 16.00 m
Flash options Auto, Auto/Red-eye Reduction, Forced On, Forced On/Red-eye Reduction, Slow Sync, Slow Sync w/Red-eye Reduction, Forced Off Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless
External flash
AEB
WB bracketing
Maximum flash synchronize 1/320 seconds 1/180 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions 3840 x 2160 @ 60p / 150 Mbps, MOV, H.264, Linear PCM 1280 x 720 (24 fps), 640 x 416 (24 fps)
Max video resolution 3840x2160 1280x720
Video data format MPEG-4, H.264 Motion JPEG
Microphone port
Headphone port
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB Yes (can be charged with high-power laptop/tablet chargers or portable power banks) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 1020g (2.25 pounds) 580g (1.28 pounds)
Dimensions 149 x 110 x 97mm (5.9" x 4.3" x 3.8") 123 x 92 x 68mm (4.8" x 3.6" x 2.7")
DXO scores
DXO All around rating 100 72
DXO Color Depth rating 26.4 22.8
DXO Dynamic range rating 14.1 12.5
DXO Low light rating 3525 811
Other
Battery life 360 photographs 1900 photographs
Form of battery Battery Pack Battery Pack
Battery ID - 4 x AA
Self timer Yes Yes (2 or 12 sec)
Time lapse shooting
Storage type - SD/SDHC card
Card slots 2 One
Launch pricing $3,698 $600