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Pentax K-3 vs Sony RX100 IV

Portability
59
Imaging
65
Features
85
Overall
73
Pentax K-3 front
 
Sony Cyber-shot DSC-RX100 IV front
Portability
89
Imaging
52
Features
79
Overall
62

Pentax K-3 vs Sony RX100 IV 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 Max Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 800g - 131 x 100 x 77mm
  • Released April 2014
  • Updated by Pentax K-3 II
Sony RX100 IV
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Display
  • ISO 125 - 12800 (Push to 25600)
  • Optical Image Stabilization
  • 3840 x 2160 video
  • 24-70mm (F1.8-2.8) lens
  • 298g - 102 x 58 x 41mm
  • Announced June 2015
  • Old Model is Sony RX100 III
  • Refreshed by Sony RX100 V
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Pentax K-3 vs Sony RX100 IV Overview

Its time to examine more closely at the Pentax K-3 vs Sony RX100 IV, one is a Advanced DSLR and the other is a Large Sensor Compact by companies Pentax and Sony. The image resolution of the K-3 (24MP) and the RX100 IV (20MP) is very similar but the K-3 (APS-C) and RX100 IV (1") feature different sensor size.

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The K-3 was brought out 14 months before the RX100 IV making the cameras a generation away from each other. Both of the cameras offer different body type with the Pentax K-3 being a Mid-size SLR camera and the Sony RX100 IV being a Large Sensor Compact camera.

Before diving in to a complete comparison, below is a quick introduction of how the K-3 scores versus the RX100 IV when it comes to portability, imaging, features and an overall score.

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Reasons to pick Pentax K-3 over the Sony RX100 IV

 K-3 RX100 IV 
Display sizing3.2"3"Larger display (+0.2")

Reasons to pick Sony RX100 IV over the Pentax K-3

 RX100 IV K-3 
AnnouncedJune 2015April 2014More modern by 14 months
Display typeTiltingFixed Tilting display
Display resolution1229k1037kCrisper display (+192k dot)
Selfie screen Easy selfies

Common features in the Pentax K-3 and Sony RX100 IV

 K-3 RX100 IV 
Focus manually Very accurate focusing
Touch display No Touch display

Pentax K-3 vs Sony RX100 IV Physical Comparison

For those who are going to carry around your camera frequently, you'll need to think about its weight and measurements. The Pentax K-3 has outer dimensions 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 Sony RX100 IV has proportions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") accompanied by a weight of 298 grams (0.66 lbs).

Compare the Pentax K-3 vs Sony RX100 IV in the new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will change depending on the lens you have chosen at that moment. Here is the front view over all size comparison of the K-3 and the RX100 IV.

Pentax K-3 vs Sony RX100 IV size comparison

Using size and weight, the portability grade of the K-3 and RX100 IV is 59 and 89 respectively.

Pentax K-3 vs Sony RX100 IV top view buttons comparison

Pentax K-3 vs Sony RX100 IV Sensor Comparison

Usually, it can be hard to visualize the gap between sensor sizes simply by reading specifications. The picture here may offer you a far better sense of the sensor dimensions in the K-3 and RX100 IV.

To sum up, both of the cameras offer different resolutions and different sensor sizes. The K-3 because of its larger sensor is going to make achieving shallow DOF easier and the Pentax K-3 will offer you more detail having its extra 4 Megapixels. Greater resolution can also make it easier to crop images a little more aggressively. The more aged K-3 is going to be disadvantaged when it comes to sensor innovation.

Pentax K-3 vs Sony RX100 IV sensor size comparison

Pentax K-3 vs Sony RX100 IV Screen and ViewFinder

Pentax K-3 vs Sony RX100 IV Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-3 Portrait photography advice
Sony RX100 IV Portrait photography advice
79
focusing manually
decent MP (24 megapixels)
nice sensor size (APS-C)
provides face detection focusing
exports RAW files
65
focusing manually
flash sync speed is above average (1/2,000 seconds)
good megapixels (20 megapixels)
good sensor size (1")
provides face detection focus
exports RAW files
cannot use external flash
Photography Glossary

Street Comparison

Pentax K-3 as a Street photography camera
Sony RX100 IV as a Street photography camera
69
has image stabilization (Sensor based)
nice sensor size (APS-C)
exports RAW files
weather proof
good ISO range (51,200)
no articulating screen
85
screen tilts
has image stabilization (Optical)
good sensor size (1")
exports RAW files
lighter than competition in class (298 grams)
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Sports Comparison

Pentax K-3 Sports photography info
Sony RX100 IV Sports photography info
76
great max shutter speed (1/8,000 seconds)
has image stabilization (Sensor based)
decent MP (24MP)
nice sensor size (APS-C)
provides tracking autofocus
weather proof
comes with phase detect AF
bad battery power (560 per charge)
68
quiet mode (1/32,000s)
max frames per second high (16.0 fps)
has image stabilization (Optical)
good megapixels (20 megapixels)
good sensor size (1")
provides tracking autofocus
has no phase detect auto focus
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Travel Comparison

Pentax K-3 Travel photography factors
Sony RX100 IV Travel photography factors
60
weather proof
decent MP (24 megapixels)
flash built-in
bad battery power (560 per charge)
doesn't contain selfie friendly screen
86
lighter than competition in class (298 grams)
good megapixels (20 megapixels)
has built in flash
display is selfie friendly
quite wide (24mm)
very good max aperture (f1.8)
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Landscape Comparison

Pentax K-3 as a Landscape photography camera
Sony RX100 IV as a Landscape photography camera
77
focusing manually
swap lenses (Pentax KAF2 mount)
screen is a decent size (3.2 inch)
has image stabilization (Sensor based)
decent MP (24 megapixels)
nice sensor size (APS-C)
doesnt have anti-alias filter
good ISO range (51,200)
exports RAW files
weather proof
has dual storage slots
bad battery power (560 CIPA)
74
focusing manually
quite wide (24mm)
very good max aperture (f1.8)
good sized screen (3 inches)
has image stabilization (Optical)
good megapixels (20MP)
good sensor size (1")
exports RAW files
lens is fixed (fixed lens mount)
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Vlogging Comparison

Pentax K-3 Vlogging factors
Sony RX100 IV Vlogging factors
34
has image stabilization (Sensor based)
provides face detection focusing
video res high (1920 x 1080 resolution)
does have external microphone jack
doesn't contain selfie friendly screen
81
quite wide (24mm)
very good max aperture (f1.8)
display is selfie friendly
has image stabilization (Optical)
provides face detection focus
high res video (3840 x 2160 pxls)
lighter than competition in class (298 grams)
doesn't have external mic port
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Pentax K-3 vs Sony RX100 IV Specifications

Detailed spec comparison table for Pentax K-3 and Sony RX100 IV
 Pentax K-3Sony Cyber-shot DSC-RX100 IV
General Information
Brand Pentax Sony
Model Pentax K-3 Sony Cyber-shot DSC-RX100 IV
Category Advanced DSLR Large Sensor Compact
Released 2014-04-10 2015-06-10
Body design Mid-size SLR Large Sensor Compact
Sensor Information
Chip Prime III Bionz X
Sensor type CMOS BSI-CMOS
Sensor size APS-C 1"
Sensor dimensions 23.5 x 15.6mm 13.2 x 8.8mm
Sensor surface area 366.6mm² 116.2mm²
Sensor resolution 24MP 20MP
Anti aliasing filter
Aspect ratio 3:2 1:1, 4:3, 3:2 and 16:9
Full resolution 6016 x 4000 5472 x 3648
Max native ISO 51200 12800
Max boosted ISO - 25600
Minimum native ISO 100 125
RAW format
Minimum boosted ISO - 80
Autofocusing
Focus manually
AF touch
Continuous AF
AF single
Tracking AF
AF selectice
Center weighted AF
AF multi area
Live view AF
Face detect focusing
Contract detect focusing
Phase detect focusing
Number of focus points 27 25
Cross focus points 25 -
Lens
Lens mounting type Pentax KAF2 fixed lens
Lens focal range - 24-70mm (2.9x)
Largest aperture - f/1.8-2.8
Macro focus distance - 5cm
Amount of lenses 151 -
Crop factor 1.5 2.7
Screen
Range of display Fixed Type Tilting
Display diagonal 3.2" 3"
Display resolution 1,037k dot 1,229k dot
Selfie friendly
Liveview
Touch functionality
Display technology TFT LCD monitor -
Viewfinder Information
Viewfinder type Optical (pentaprism) Electronic
Viewfinder resolution - 2,359k dot
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.64x 0.59x
Features
Lowest shutter speed 30 seconds 30 seconds
Highest shutter speed 1/8000 seconds 1/2000 seconds
Highest quiet shutter speed - 1/32000 seconds
Continuous shooting speed 8.0fps 16.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Inbuilt flash
Flash range 13.00 m (at ISO 100) -
Flash options Auto, on, off, red-eye, slow sync, slow sync + red-eye, trailing curtain sync, high speed, wireless, manual -
Hot shoe
Auto exposure bracketing
White balance bracketing
Highest flash sync 1/180 seconds 1/2000 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p) 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p/60i/24p), 1280 x 720 (60p/30p/24p/120p), 1440 x 1080 (30 fps), 640 x 480 (30 fps)
Max video resolution 1920x1080 3840x2160
Video data format MPEG-4, H.264 MPEG-4, AVCHD, XAVC S
Mic jack
Headphone jack
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 800 grams (1.76 lb) 298 grams (0.66 lb)
Dimensions 131 x 100 x 77mm (5.2" x 3.9" x 3.0") 102 x 58 x 41mm (4.0" x 2.3" x 1.6")
DXO scores
DXO All around score 80 70
DXO Color Depth score 23.7 22.9
DXO Dynamic range score 13.4 12.6
DXO Low light score 1216 562
Other
Battery life 560 images 280 images
Battery form Battery Pack Battery Pack
Battery model D-LI90 NP-BX1
Self timer Yes ( 2 or 12 seconds) Yes
Time lapse shooting With downloadable app
Type of storage Dual SD/SDHC/SDXC SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo
Storage slots Dual Single
Price at launch $639 $898