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Pentax K100D vs Sony RX10 IV

Portability
64
Imaging
45
Features
36
Overall
41
Pentax K100D front
 
Sony Cyber-shot DSC-RX10 IV front
Portability
52
Imaging
53
Features
82
Overall
64

Pentax K100D vs Sony RX10 IV Key Specs

Pentax K100D
(Full Review)
  • 6MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 200 - 3200
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF Mount
  • 660g - 129 x 93 x 70mm
  • Revealed December 2006
  • Successor is Pentax K100D S
Sony RX10 IV
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Display
  • ISO 125 - 12800 (Boost to 25600)
  • Optical Image Stabilization
  • 3840 x 2160 video
  • 24-600mm (F2.4-4.0) lens
  • 1095g - 133 x 94 x 145mm
  • Introduced September 2017
  • Succeeded the Sony RX10 III
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Pentax K100D vs Sony RX10 IV Overview

Lets take a closer look at the Pentax K100D vs Sony RX10 IV, former being a Entry-Level DSLR while the other is a Large Sensor Superzoom by rivals Pentax and Sony. There is a sizable difference among the sensor resolutions of the K100D (6MP) and RX10 IV (20MP) and the K100D (APS-C) and RX10 IV (1") have different sensor dimensions.

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The K100D was brought out 11 years prior to the RX10 IV and that is a fairly significant difference as far as camera tech is concerned. Both the cameras have different body design with the Pentax K100D being a Compact SLR camera and the Sony RX10 IV being a SLR-like (bridge) camera.

Before delving straight to a in-depth comparison, here is a short view of how the K100D grades versus the RX10 IV for portability, imaging, features and an overall rating.

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Reasons to pick Pentax K100D over the Sony RX10 IV

 K100D RX10 IV 

Reasons to pick Sony RX10 IV over the Pentax K100D

 RX10 IV K100D 
IntroducedSeptember 2017December 2006Fresher by 131 months
Display typeTiltingFixed Tilting display
Display dimensions3"2.5"Larger display (+0.5")
Display resolution1440k210kSharper display (+1230k dot)
Touch friendly display Easily navigate

Common features in the Pentax K100D and Sony RX10 IV

 K100D RX10 IV 
Focus manually More exact focusing
Selfie screen Missing selfie screen

Pentax K100D vs Sony RX10 IV Physical Comparison

When you are planning to carry your camera often, you have to factor its weight and proportions. The Pentax K100D has outside measurements of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") along with a weight of 660 grams (1.46 lbs) whilst the Sony RX10 IV has measurements of 133mm x 94mm x 145mm (5.2" x 3.7" x 5.7") and a weight of 1095 grams (2.41 lbs).

Check out the Pentax K100D vs Sony RX10 IV in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into account, the weight of an ILC will change depending on the lens you choose at that moment. Following is a front view measurements comparison of the K100D versus the RX10 IV.

Pentax K100D vs Sony RX10 IV size comparison

Factoring in size and weight, the portability grade of the K100D and RX10 IV is 64 and 52 respectively.

Pentax K100D vs Sony RX10 IV top view buttons comparison

Pentax K100D vs Sony RX10 IV Sensor Comparison

In many cases, it can be tough to imagine the contrast in sensor sizing just by checking out a spec sheet. The photograph here may offer you a more clear sense of the sensor measurements in the K100D and RX10 IV.

As you can see, each of the cameras have different megapixel count and different sensor sizing. The K100D due to its larger sensor is going to make achieving shallow depth of field less difficult and the Sony RX10 IV will provide more detail having its extra 14 Megapixels. Greater resolution will also allow you to crop pics a bit more aggressively. The older K100D will be behind when it comes to sensor technology.

Pentax K100D vs Sony RX10 IV sensor size comparison

Pentax K100D vs Sony RX10 IV Screen and ViewFinder

Pentax K100D vs Sony RX10 IV Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K100D as a Portrait photography camera
Sony RX10 IV as a Portrait photography camera
51
has manual focus
decent sensor size (APS-C)
supports RAW files
no liveview
low MP (6 megapixels)
71
focusing manually
flash sync speed is above average (1/2,000 seconds)
good resolution (20 megapixels)
nice sensor size (1")
has face detect focus
delivers RAW files
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Street Comparison

Pentax K100D Street photography factors
Sony RX10 IV Street photography factors
58
built in image stabilization (Sensor based)
decent sensor size (APS-C)
supports RAW files
screen does not articulate
more heavy than competitors (660g)
64
tilting screen
has image stabilization (Optical)
nice sensor size (1")
delivers RAW files
offers focus by touch
weather proof
heavier than others (1,095g)
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Sports Comparison

Pentax K100D Sports photography details
Sony RX10 IV Sports photography details
47
built in image stabilization (Sensor based)
decent sensor size (APS-C)
has phase detect auto focus
no liveview
max fps very slow (3.0 frames/s)
low MP (6 megapixels)
76
long zoom range (24-600mm 25.0 x zoom)
quiet shooting (1/32,000s)
max frames per second high (24.0 frames/s)
has image stabilization (Optical)
good resolution (20 megapixels)
nice sensor size (1")
has tracking focus
weather proof
sensor has phase detect auto focus
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Travel Comparison

Travel photography with Pentax K100D
Travel photography with Sony RX10 IV
42
flash built-in
missing Timelapse function
more heavy than competitors (660 grams)
low MP (6MP)
display isn't selfie friendly
56
weather proof
supports bluetooth
offers focus by touch
good resolution (20MP)
has built in flash
relatively wide (24mm)
very long zoom (600mm)
does not have Time Lapse recording
heavier than others (1,095 grams)
display isn't selfie friendly
sluggish max aperture (f2.4)
Photography Glossary

Landscape Comparison

Pentax K100D as a Landscape photography camera
Sony RX10 IV as a Landscape photography camera
52
has manual focus
interchangeable lenses (Pentax KAF mount)
built in image stabilization (Sensor based)
decent sensor size (APS-C)
supports RAW files
screen is small (2.5")
no liveview
low MP (6MP)
missing Timelapse function
62
focusing manually
relatively wide (24mm)
good sized screen (3 inches)
has image stabilization (Optical)
good resolution (20 megapixels)
nice sensor size (1")
delivers RAW files
weather proof
cannot change lens (fixed lens mount)
sluggish max aperture (f2.4)
does not have Time Lapse recording
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Vlogging Comparison

Pentax K100D as a Vlogging camera
Sony RX10 IV as a Vlogging camera
9
lack of video recording
29
relatively wide (24mm)
touchscreen
has image stabilization (Optical)
has face detect focus
video res high (3840 x 2160 resolution)
includes mic port
sluggish max aperture (f2.4)
display isn't selfie friendly
heavier than others (1,095g)
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Pentax K100D vs Sony RX10 IV Specifications

Detailed spec comparison table for Pentax K100D and Sony RX10 IV
 Pentax K100DSony Cyber-shot DSC-RX10 IV
General Information
Make Pentax Sony
Model Pentax K100D Sony Cyber-shot DSC-RX10 IV
Category Entry-Level DSLR Large Sensor Superzoom
Revealed 2006-12-03 2017-09-12
Body design Compact SLR SLR-like (bridge)
Sensor Information
Processor Chip - Bionz X
Sensor type CCD BSI-CMOS
Sensor size APS-C 1"
Sensor dimensions 23.5 x 15.7mm 13.2 x 8.8mm
Sensor area 369.0mm² 116.2mm²
Sensor resolution 6MP 20MP
Anti aliasing filter
Aspect ratio 3:2 1:1, 4:3, 3:2 and 16:9
Peak resolution 3008 x 2008 5472 x 3648
Highest native ISO 3200 12800
Highest enhanced ISO - 25600
Min native ISO 200 125
RAW support
Min enhanced ISO - 64
Autofocusing
Manual focus
Touch focus
AF continuous
Single AF
Tracking AF
Selective AF
AF center weighted
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 11 315
Lens
Lens mounting type Pentax KAF fixed lens
Lens focal range - 24-600mm (25.0x)
Maximum aperture - f/2.4-4.0
Macro focus range - 3cm
Total lenses 151 -
Crop factor 1.5 2.7
Screen
Range of display Fixed Type Tilting
Display size 2.5" 3"
Resolution of display 210 thousand dot 1,440 thousand dot
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder Optical (pentamirror) Electronic
Viewfinder resolution - 2,359 thousand dot
Viewfinder coverage 96% 100%
Viewfinder magnification 0.57x 0.7x
Features
Minimum shutter speed 30 secs 30 secs
Fastest shutter speed 1/4000 secs 1/2000 secs
Fastest quiet shutter speed - 1/32000 secs
Continuous shutter speed 3.0 frames/s 24.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom WB
Image stabilization
Inbuilt flash
Flash range - 10.80 m (at Auto ISO)
Flash modes Auto, On, Off, Red-eye reduction Auto, fill-flash, slow sync, rear sync, off
External flash
AEB
WB bracketing
Fastest flash sync 1/180 secs 1/2000 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions - 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p) ,1440 x 1080 (30p), 640 x 480 (30p)
Highest video resolution None 3840x2160
Video data format - MPEG-4, AVCHD, XAVC S
Mic jack
Headphone jack
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 660 gr (1.46 lb) 1095 gr (2.41 lb)
Physical dimensions 129 x 93 x 70mm (5.1" x 3.7" x 2.8") 133 x 94 x 145mm (5.2" x 3.7" x 5.7")
DXO scores
DXO Overall 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 - 400 photographs
Battery form - Battery Pack
Battery model 4 x AA NP-FW50
Self timer Yes (2 or 12 sec) Yes (2 or 10 sec, continuous)
Time lapse recording
Storage media SD/MMC card SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Storage slots One One
Retail price $0 $1,698