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Pentax K-3 vs Pentax K-3 III

Portability
59
Imaging
66
Features
85
Overall
73
Pentax K-3 front
 
Pentax K-3 Mark III front
Portability
58
Imaging
72
Features
86
Overall
77

Pentax K-3 vs Pentax K-3 III Key Specs

Pentax K-3
(Full Review)
  • 24MP - APS-C Sensor
  • 3.2" Fixed Display
  • 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 2014
  • Renewed by Pentax K-3 II
Pentax K-3 III
(Full Review)
  • 26MP - APS-C Sensor
  • 3.2" Fixed Display
  • 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
  • Released March 2021
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Pentax K-3 vs Pentax K-3 III Overview

Its time to take a closer look at the Pentax K-3 versus Pentax K-3 III, both Advanced DSLR digital cameras and both of them are built by Pentax. The image resolution of the K-3 (24MP) and the K-3 III (26MP) is very well matched and they enjoy the exact same sensor measurements (APS-C).

Photography Glossary

The K-3 was brought out 8 years earlier than the K-3 III and that is quite a significant gap as far as technology is concerned. Both of the cameras come with the identical body type (Mid-size SLR).

Before we go straight into a in-depth comparison, below is a simple summary of how the K-3 matches up against the K-3 III with regards to portability, imaging, features and an overall grade.

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

 K-3 K-3 III 

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

 K-3 III K-3 
ReleasedMarch 2021April 2014More recent by 84 months
Display resolution1620k1037kClearer display (+583k dot)
Touch friendly display Easily navigate

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

 K-3 K-3 III 
Manual focus More exact focusing
Display typeFixed Fixed Fixed display
Display dimension3.2"3.2"Identical display measurements
Selfie screen Missing selfie screen

Pentax K-3 vs Pentax K-3 III Physical Comparison

If you are intending to lug around your camera regularly, you'll have to consider its weight and measurements. The Pentax K-3 comes with exterior measurements of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") along with a weight of 800 grams (1.76 lbs) whilst the Pentax K-3 III has proportions of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") accompanied by a weight of 820 grams (1.81 lbs).

See the Pentax K-3 versus Pentax K-3 III in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are utilizing at that time. Here is the front view scale comparison of the K-3 vs the K-3 III.

Pentax K-3 vs Pentax K-3 III size comparison

Looking at dimensions and weight, the portability grade of the K-3 and K-3 III is 59 and 58 respectively.

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

Pentax K-3 vs Pentax K-3 III Sensor Comparison

Sometimes, it is difficult to picture the gap between sensor measurements purely by looking at a spec sheet. The visual below might offer you a clearer sense of the sensor measurements in the K-3 and K-3 III.

As you can see, the two cameras posses the exact same sensor measurements but different resolution. You should expect to see the Pentax K-3 III to resolve greater detail having its extra 2 Megapixels. Greater resolution will also allow you to crop images somewhat more aggressively. The older K-3 is going to be behind with regard to sensor technology.

Pentax K-3 vs Pentax K-3 III sensor size comparison

Pentax K-3 vs Pentax K-3 III Screen and ViewFinder

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

Portrait Comparison

Pentax K-3 Portrait photography factors
Pentax K-3 III Portrait photography factors
79
you can focus manually
good resolution (24 megapixels)
decent sensor size (APS-C)
supports face detect focus
supports RAW formats
83
manual focus
fantastic megapixels (26MP)
sensor size is good (APS-C)
supports face detection focusing
exports RAW files
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Street Comparison

Pentax K-3 as a Street photography camera
Pentax K-3 III as a Street photography camera
69
image stabilization (Sensor based)
decent sensor size (APS-C)
supports RAW formats
environment proof
very good high ISO (51,200)
no moving screen
71
built in image stabilization (Sensor based)
sensor size is good (APS-C)
exports RAW files
comes with touch focus
weather proof
above average ISO range (1,600,000)
screen does not articulate
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Sports Comparison

Pentax K-3 as a Sports photography camera
Pentax K-3 III as a Sports photography camera
76
high shutter speed (1/8,000s)
image stabilization (Sensor based)
good resolution (24MP)
decent sensor size (APS-C)
supports tracking focus
environment proof
has phase detect auto focus
low battery pack (560 per charge)
79
great max shutter speed (1/8,000 seconds)
built in image stabilization (Sensor based)
fantastic megapixels (26 megapixels)
sensor size is good (APS-C)
supports tracking autofocus
weather proof
comes with phase detect AF
low battery power (800 CIPA)
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Travel Comparison

Pentax K-3 Travel photography information
Pentax K-3 III Travel photography information
60
environment proof
good resolution (24 megapixels)
flash built-in
low battery pack (560 shots)
does not feature selfie friendly display
64
weather proof
connects via bluetooth
comes with touch focus
fantastic megapixels (26 megapixels)
low battery power (800 shots)
display isn't selfie friendly
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Landscape Comparison

Landscape photography with Pentax K-3
Landscape photography with Pentax K-3 III
78
you can focus manually
interchangeable lenses (Pentax KAF2 mount)
screen size is good (3.2 inches)
image stabilization (Sensor based)
good resolution (24 megapixels)
decent sensor size (APS-C)
doesnt have anti-alias filter
very good high ISO (51,200)
supports RAW formats
environment proof
has double storage slots
low battery pack (560 CIPA)
80
manual focus
interchangeable lenses (Pentax KAF2 mount)
screen size is good (3.2 inch)
built in image stabilization (Sensor based)
fantastic megapixels (26MP)
sensor size is good (APS-C)
doesnt have anti aliasing filter
above average ISO range (1,600,000)
exports RAW files
weather proof
two card slots
low battery power (800 shots)
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Vlogging Comparison

Pentax K-3 Vlogging info
Pentax K-3 III Vlogging info
34
image stabilization (Sensor based)
supports face detect focus
video resolution high (1920 x 1080 resolution)
has mic port
does not feature selfie friendly display
35
has touchscreen
built in image stabilization (Sensor based)
supports face detection focusing
video resolution high (3840 x 2160 pixels)
does have external microphone socket
display isn't selfie friendly
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Pentax K-3 vs Pentax K-3 III Specifications

Detailed spec comparison table for Pentax K-3 and Pentax K-3 III
 Pentax K-3Pentax K-3 Mark III
General Information
Company Pentax Pentax
Model Pentax K-3 Pentax K-3 Mark III
Category Advanced DSLR Advanced DSLR
Released 2014-04-10 2021-03-31
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Powered by Prime III -
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor measurements 23.5 x 15.6mm 23 x 15.5mm
Sensor area 366.6mm² 356.5mm²
Sensor resolution 24MP 26MP
Anti aliasing filter
Aspect ratio 3:2 3:2
Maximum resolution 6016 x 4000 6192 x 4128
Maximum native ISO 51200 1600000
Min native ISO 100 100
RAW pictures
Autofocusing
Manual focus
Touch focus
Autofocus continuous
Autofocus single
Tracking autofocus
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 27 101
Cross focus points 25 25
Lens
Lens mount Pentax KAF2 Pentax KAF2
Number of lenses 151 156
Crop factor 1.5 1.6
Screen
Display type Fixed Type Fixed Type
Display diagonal 3.2 inches 3.2 inches
Display resolution 1,037 thousand dots 1,620 thousand dots
Selfie friendly
Liveview
Touch friendly
Display tech TFT LCD monitor -
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 100%
Viewfinder magnification 0.64x 0.7x
Features
Lowest shutter speed 30 secs 30 secs
Highest shutter speed 1/8000 secs 1/8000 secs
Continuous shooting rate 8.0 frames per second 12.0 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash range 13.00 m (at ISO 100) no built-in flash
Flash settings Auto, on, off, red-eye, slow sync, slow sync + red-eye, trailing curtain sync, high speed, wireless, manual 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
Hot shoe
AEB
White balance bracketing
Highest flash synchronize 1/180 secs 1/200 secs
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) 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
Maximum video resolution 1920x1080 3840x2160
Video data format MPEG-4, H.264 MPEG-4, H.264
Microphone port
Headphone port
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS Optional None
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 800g (1.76 lbs) 820g (1.81 lbs)
Dimensions 131 x 100 x 77mm (5.2" x 3.9" x 3.0") 135 x 104 x 74mm (5.3" x 4.1" x 2.9")
DXO scores
DXO All around score 80 not tested
DXO Color Depth score 23.7 not tested
DXO Dynamic range score 13.4 not tested
DXO Low light score 1216 not tested
Other
Battery life 560 images 800 images
Style of battery Battery Pack Battery Pack
Battery model D-LI90 D-LI90
Self timer Yes ( 2 or 12 seconds) Yes
Time lapse feature
Type of storage Dual SD/SDHC/SDXC Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)
Card slots 2 2
Retail price $639 $1,999