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Pentax K-3 III vs Sony FX30

Portability
58
Imaging
71
Features
86
Overall
77
Pentax K-3 Mark III front
 
Sony FX30 front
Portability
64
Imaging
73
Features
92
Overall
80

Pentax K-3 III vs Sony FX30 Key Specs

Pentax K-3 III
(Full Review)
  • 26MP - APS-C Sensor
  • 3.2" Fixed Screen
  • ISO 100 - 1600000
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Pentax KAF2 Mount
  • 820g - 135 x 104 x 74mm
  • Launched March 2021
Sony FX30
(Full Review)
  • 26MP - APS-C Sensor
  • 3.00" Fully Articulated Screen
  • ISO 100 - 32000 (Raise to 102400)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 646g - 130 x 78 x 85mm
  • Announced September 2022
Photography Glossary

Pentax K-3 III vs Sony FX30 Overview

Its time to examine more in depth at the Pentax K-3 III vs Sony FX30, one is a Advanced DSLR and the latter is a Advanced Mirrorless by manufacturers Pentax and Sony. The resolution of the K-3 III (26MP) and the FX30 (26MP) is relatively close and they feature the exact same sensor sizing (APS-C).

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The K-3 III was launched 18 months before the FX30 which makes the cameras a generation away from one another. Both cameras come with different body type with the Pentax K-3 III being a Mid-size SLR camera and the Sony FX30 being a Rangefinder-style mirrorless camera.

Before diving straight into a comprehensive comparison, below is a simple overview of how the K-3 III matches up against the FX30 with respect to portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-3 III over the Sony FX30

 K-3 III FX30 
Screen dimension3.2"3.00"Bigger screen (+0.2")

Reasons to pick Sony FX30 over the Pentax K-3 III

 FX30 K-3 III 
AnnouncedSeptember 2022March 2021Newer by 18 months
Screen typeFully articulatedFixed Fully Articulating screen
Screen resolution2360k1620kCrisper screen (+740k dot)
Selfie screen Easy selfies

Common features in the Pentax K-3 III and Sony FX30

 K-3 III FX30 
Manual focus More exact focusing
Touch screen Quickly navigate

Pentax K-3 III vs Sony FX30 Physical Comparison

If you are looking to travel with your camera regularly, you are going to need to think about its weight and size. The Pentax K-3 III offers exterior dimensions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") and a weight of 820 grams (1.81 lbs) whilst the Sony FX30 has specifications of 130mm x 78mm x 85mm (5.1" x 3.1" x 3.3") with a weight of 646 grams (1.42 lbs).

Check the Pentax K-3 III vs Sony FX30 in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you use at that time. Underneath is the front view proportions comparison of the K-3 III and the FX30.

Pentax K-3 III vs Sony FX30 size comparison

Factoring in dimensions and weight, the portability score of the K-3 III and FX30 is 58 and 64 respectively.

Pentax K-3 III vs Sony FX30 top view buttons comparison

Pentax K-3 III vs Sony FX30 Sensor Comparison

Quite often, it is very hard to picture the contrast in sensor dimensions only by looking through specifications. The pic here might provide you a far better sense of the sensor dimensions in the K-3 III and FX30.

Plainly, both of the cameras posses the exact same sensor measurements and the same megapixels so you should expect comparable quality of files though you might want to consider the release date of the cameras into account. The more aged K-3 III will be disadvantaged with regard to sensor innovation.

Pentax K-3 III vs Sony FX30 sensor size comparison

Pentax K-3 III vs Sony FX30 Screen and ViewFinder

Pentax K-3 III vs Sony FX30 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-3 III Portrait photography advice
Sony FX30 Portrait photography advice
82
has manual focus
fantastic sensor resolution (26 megapixels)
decent sensor size (APS-C)
offers face detect autofocus
saves RAW formats
83
you can focus manually
megapixel count excellent (26 megapixels)
decent sensor size (APS-C)
provides face detect focus
exports RAW files
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Street Comparison

Pentax K-3 III as a Street photography camera
Sony FX30 as a Street photography camera
70
has image stabilization (Sensor based)
decent sensor size (APS-C)
saves RAW formats
has touch to focus
weather proof
great ISO range (1,600,000)
no moving screen
73
has image stabilization (Sensor based 5-axis)
decent sensor size (APS-C)
exports RAW files
features touch focus
weather proofing
good high ISO (32,000)
more heavy than competition in class (646 grams)
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Sports Comparison

Sports photography with Pentax K-3 III
Sports photography with Sony FX30
79
great max shutter speed (1/8,000 seconds)
has image stabilization (Sensor based)
fantastic sensor resolution (26MP)
decent sensor size (APS-C)
offers tracking focus
weather proof
has phase detect autofocus
bad battery (800 CIPA)
86
great max shutter speed (1/8,000s)
has image stabilization (Sensor based 5-axis)
megapixel count excellent (26MP)
decent sensor size (APS-C)
provides tracking focus
weather proofing
great battery power (570 shots)
supports phase detect auto focus
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Travel Comparison

Pentax K-3 III as a Travel photography camera
Sony FX30 as a Travel photography camera
64
weather proof
has bluetooth
has touch to focus
fantastic sensor resolution (26 megapixels)
bad battery (800 shots)
doesn't posses selfie friendly screen
74
great battery power (570 shots)
weather proofing
supports bluetooth
features touch focus
megapixel count excellent (26 megapixels)
selfie friendly screen
more heavy than competition in class (646g)
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Landscape Comparison

Pentax K-3 III as a Landscape photography camera
Sony FX30 as a Landscape photography camera
80
has manual focus
change lenses (Pentax KAF2 mount)
screen is a decent size (3.2")
has image stabilization (Sensor based)
fantastic sensor resolution (26MP)
decent sensor size (APS-C)
does not have low pass filter
great ISO range (1,600,000)
saves RAW formats
weather proof
2 card slots
bad battery (800 per charge)
85
you can focus manually
change lenses (Sony E mount)
decent sized screen (3.00 inch)
has image stabilization (Sensor based 5-axis)
megapixel count excellent (26 megapixels)
decent sensor size (APS-C)
good high ISO (32,000)
exports RAW files
weather proofing
great battery power (570 shots)
has dual storage slots
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Vlogging Comparison

Pentax K-3 III Vlogging highlights
Sony FX30 Vlogging highlights
35
touchscreen functionality
has image stabilization (Sensor based)
offers face detect autofocus
high video quality (3840 x 2160 pxls)
has microphone support
doesn't posses selfie friendly screen
74
selfie friendly screen
touchscreen capability
has image stabilization (Sensor based 5-axis)
provides face detect focus
video resolution high (3840 x 2160 resolution)
comes with microphone jack
more heavy than competition in class (646g)
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Pentax K-3 III vs Sony FX30 Specifications

Detailed spec comparison table for Pentax K-3 III and Sony FX30
 Pentax K-3 Mark IIISony FX30
General Information
Company Pentax Sony
Model Pentax K-3 Mark III Sony FX30
Category Advanced DSLR Advanced Mirrorless
Launched 2021-03-31 2022-09-28
Body design Mid-size SLR Rangefinder-style mirrorless
Sensor Information
Sensor type CMOS BSI-CMOS
Sensor size APS-C APS-C
Sensor measurements 23 x 15.5mm 23.5 x 15.6mm
Sensor surface area 356.5mm² 366.6mm²
Sensor resolution 26MP 26MP
Anti aliasing filter
Aspect ratio 3:2 3:2 and 16:9
Maximum resolution 6192 x 4128 6192 x 4128
Maximum native ISO 1600000 32000
Maximum boosted ISO - 102400
Lowest native ISO 100 100
RAW format
Lowest boosted ISO - 50
Autofocusing
Focus manually
Autofocus touch
Continuous autofocus
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Number of focus points 101 759
Cross focus points 25 -
Lens
Lens mounting type Pentax KAF2 Sony E
Total lenses 156 187
Crop factor 1.6 1.5
Screen
Screen type Fixed Type Fully articulated
Screen size 3.2" 3.00"
Screen resolution 1,620 thousand dot 2,360 thousand dot
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 100% -
Viewfinder magnification 0.7x -
Features
Lowest shutter speed 30 seconds 30 seconds
Highest shutter speed 1/8000 seconds 1/8000 seconds
Continuous shooting speed 12.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Integrated flash
Flash range no built-in flash no built-in flash
Flash settings Auto, Auto + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow- speed Sync, Slow-speed Sync + Red-eye, P-TTL, Contrast-control-sync, High-speed sync, Wireless sync no built-in flash
Hot shoe
Auto exposure bracketing
White balance bracketing
Highest flash sync 1/200 seconds -
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 3840 x 2160 @ 30p, MOV, H.264, Linear PCM3840 x 2160 @ 24p, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 24p, MOV, H.264, Linear PCM 3840 x 2160 @ 120p / 280 Mbps, XAVC HS, MP4, H.265, Linear PCM
Maximum video resolution 3840x2160 3840x2160
Video format MPEG-4, H.264 XAVC S, XAVC HS, XAVC S-I, H.264, H.265
Microphone input
Headphone input
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 3.2 Gen 1 (5 GBit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS None None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 820 gr (1.81 pounds) 646 gr (1.42 pounds)
Dimensions 135 x 104 x 74mm (5.3" x 4.1" x 2.9") 130 x 78 x 85mm (5.1" x 3.1" x 3.3")
DXO scores
DXO All around score not tested not tested
DXO Color Depth score not tested not tested
DXO Dynamic range score not tested not tested
DXO Low light score not tested not tested
Other
Battery life 800 shots 570 shots
Type of battery Battery Pack Battery Pack
Battery model D-LI90 NP-FZ100
Self timer Yes Yes
Time lapse feature
Type of storage Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1) Dual SD/CFexpress Type A slots
Storage slots Dual Dual
Cost at launch $1,999 $1,800