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Nikon D100 vs Pentax K-3 III

Portability
58
Imaging
43
Features
33
Overall
39
Nikon D100 front
 
Pentax K-3 Mark III front
Portability
58
Imaging
72
Features
86
Overall
77

Nikon D100 vs Pentax K-3 III Key Specs

Nikon D100
(Full Review)
  • 6MP - APS-C Sensor
  • 1.8" Fixed Display
  • ISO 200 - 1600
  • No Video
  • Nikon F Mount
  • 780g - 144 x 116 x 81mm
  • Announced July 2002
  • Updated by Nikon D200
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 Maximum Shutter
  • 3840 x 2160 video
  • Pentax KAF2 Mount
  • 820g - 135 x 104 x 74mm
  • Released March 2021
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Nikon D100 vs Pentax K-3 III Overview

Following is a detailed analysis of the Nikon D100 vs Pentax K-3 III, both Advanced DSLR digital cameras by manufacturers Nikon and Pentax. There is a sizable difference between the image resolutions of the D100 (6MP) and K-3 III (26MP) but they enjoy the same exact sensor sizes (APS-C).

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The D100 was launched 19 years prior to the K-3 III which is quite a significant difference as far as tech is concerned. Both of these cameras offer the identical body type (Mid-size SLR).

Before diving straight into a complete comparison, below is a brief synopsis of how the D100 grades versus the K-3 III when considering portability, imaging, features and an overall score.

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Reasons to pick Nikon D100 over the Pentax K-3 III

 D100 K-3 III 

Reasons to pick Pentax K-3 III over the Nikon D100

 K-3 III D100 
ReleasedMarch 2021July 2002More modern by 227 months
Screen sizing3.2"1.8"Bigger screen (+1.4")
Screen resolution1620k118kSharper screen (+1502k dot)
Touch friendly screen Quickly navigate

Common features in the Nikon D100 and Pentax K-3 III

 D100 K-3 III 
Manually focus More exact focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Missing selfie screen

Nikon D100 vs Pentax K-3 III Physical Comparison

For those who are planning to carry around your camera, you will have to factor in its weight and size. The Nikon D100 has external measurements of 144mm x 116mm x 81mm (5.7" x 4.6" x 3.2") along with a weight of 780 grams (1.72 lbs) while the Pentax K-3 III has specifications of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") accompanied by a weight of 820 grams (1.81 lbs).

Check the Nikon D100 vs Pentax K-3 III in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will vary based on the lens you have at the time. Below is the front view over all size comparison of the D100 against the K-3 III.

Nikon D100 vs Pentax K-3 III size comparison

Looking at size and weight, the portability grade of the D100 and K-3 III is 58 and 58 respectively.

Nikon D100 vs Pentax K-3 III top view buttons comparison

Nikon D100 vs Pentax K-3 III Sensor Comparison

Often, it is tough to imagine the contrast between sensor sizes only by reviewing specs. The picture here will help provide you a clearer sense of the sensor measurements in the D100 and K-3 III.

All in all, both cameras offer the same exact sensor sizing albeit different resolution. You can expect the Pentax K-3 III to offer greater detail utilizing its extra 20MP. Higher resolution will also let you crop pictures a little more aggressively. The more aged D100 is going to be disadvantaged with regard to sensor technology.

Nikon D100 vs Pentax K-3 III sensor size comparison

Nikon D100 vs Pentax K-3 III Screen and ViewFinder

Nikon D100 vs Pentax K-3 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Nikon D100 Portrait photography highlights
Pentax K-3 III Portrait photography highlights
49
focusing manually
good sensor size (APS-C)
exports RAW files
does not have liveview
MP count low (6MP)
83
has manual focus
MP count great (26MP)
sensor size is nice (APS-C)
comes with face detection autofocus
supports RAW formats
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Street Comparison

Nikon D100 as a Street photography camera
Pentax K-3 III as a Street photography camera
52
good sensor size (APS-C)
exports RAW files
no moving screen
lack of image stabilization
71
has image stabilization (Sensor based)
sensor size is nice (APS-C)
supports RAW formats
comes with focus via touch
weather proofing
good ISO range (1,600,000)
screen does not articulate
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Sports Comparison

Nikon D100 Sports photography factors
Pentax K-3 III Sports photography factors
38
good sensor size (APS-C)
comes with phase detect auto focus
does not have liveview
continuous shooting slow (3.0 frames per second)
lack of image stabilization
MP count low (6 megapixels)
79
max shutter speed is good (1/8,000 seconds)
has image stabilization (Sensor based)
MP count great (26 megapixels)
sensor size is nice (APS-C)
comes with tracking autofocus
weather proofing
comes with phase detect autofocus
low battery pack (800 CIPA)
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Travel Comparison

Travel photography with Nikon D100
Travel photography with Pentax K-3 III
41
flash built-in
missing Time Lapse mode
MP count low (6MP)
doesn't contain selfie friendly display
64
weather proofing
supports bluetooth
comes with focus via touch
MP count great (26MP)
low battery pack (800 CIPA)
does not contain selfie friendly display
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Landscape Comparison

Nikon D100 Landscape photography information
Pentax K-3 III Landscape photography information
45
focusing manually
switch lenses (Nikon F mount)
good sensor size (APS-C)
exports RAW files
small screen (1.8 inches)
does not have liveview
lack of image stabilization
MP count low (6 megapixels)
missing Time Lapse mode
80
has manual focus
interchangeable lenses (Pentax KAF2 mount)
screen is a good size (3.2 inch)
has image stabilization (Sensor based)
MP count great (26 megapixels)
sensor size is nice (APS-C)
no anti-alias filter
good ISO range (1,600,000)
supports RAW formats
weather proofing
has dual storage slots
low battery pack (800 CIPA)
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Vlogging Comparison

Vlogging with Nikon D100
Vlogging with Pentax K-3 III
9
can't record video
35
touch screen
has image stabilization (Sensor based)
comes with face detection autofocus
video res high (3840 x 2160 pxls)
does have external microphone jack
does not contain selfie friendly display
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Nikon D100 vs Pentax K-3 III Specifications

Detailed spec comparison table for Nikon D100 and Pentax K-3 III
 Nikon D100Pentax K-3 Mark III
General Information
Company Nikon Pentax
Model type Nikon D100 Pentax K-3 Mark III
Type Advanced DSLR Advanced DSLR
Announced 2002-07-26 2021-03-31
Body design Mid-size SLR Mid-size SLR
Sensor Information
Sensor type CCD CMOS
Sensor size APS-C APS-C
Sensor measurements 23.7 x 15.5mm 23 x 15.5mm
Sensor area 367.4mm² 356.5mm²
Sensor resolution 6MP 26MP
Anti alias filter
Aspect ratio 3:2 3:2
Highest Possible resolution 3008 x 2000 6192 x 4128
Maximum native ISO 1600 1600000
Min native ISO 200 100
RAW data
Autofocusing
Manual focusing
Autofocus touch
Continuous autofocus
Autofocus single
Autofocus tracking
Selective autofocus
Autofocus center weighted
Autofocus multi area
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Total focus points - 101
Cross type focus points - 25
Lens
Lens support Nikon F Pentax KAF2
Amount of lenses 309 156
Crop factor 1.5 1.6
Screen
Display type Fixed Type Fixed Type
Display size 1.8" 3.2"
Resolution of display 118k dot 1,620k dot
Selfie friendly
Liveview
Touch functionality
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 95 percent 100 percent
Viewfinder magnification 0.53x 0.7x
Features
Min shutter speed 30 seconds 30 seconds
Max shutter speed 1/4000 seconds 1/8000 seconds
Continuous shutter speed 3.0 frames per second 12.0 frames per second
Shutter priority
Aperture priority
Manual exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Inbuilt flash
Flash distance 11.00 m no built-in flash
Flash modes Auto, On, Off, Front curtain, Rear curtain, Red-Eye, Slow Sync 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
WB bracketing
Max flash sync 1/180 seconds 1/200 seconds
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported 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
Maximum video resolution None 3840x2160
Video file format - MPEG-4, H.264
Microphone input
Headphone input
Connectivity
Wireless None Built-In
Bluetooth
NFC
HDMI
USB USB 1.0 (1.5 Mbit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS None None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 780 grams (1.72 pounds) 820 grams (1.81 pounds)
Dimensions 144 x 116 x 81mm (5.7" x 4.6" x 3.2") 135 x 104 x 74mm (5.3" x 4.1" x 2.9")
DXO scores
DXO Overall rating not tested not tested
DXO Color Depth rating not tested not tested
DXO Dynamic range rating not tested not tested
DXO Low light rating not tested not tested
Other
Battery life - 800 shots
Form of battery - Battery Pack
Battery ID - D-LI90
Self timer Yes (2, 5, 2 or 100 sec) Yes
Time lapse recording
Storage media Compact Flash (Type I or II) Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)
Storage slots One Dual
Cost at release $170 $1,999