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Nikon D7100 vs Pentax K20D

Portability
59
Imaging
65
Features
80
Overall
71
Nikon D7100 front
 
Pentax K20D front
Portability
59
Imaging
54
Features
52
Overall
53

Nikon D7100 vs Pentax K20D Key Specs

Nikon D7100
(Full Review)
  • 24MP - APS-C Sensor
  • 3.2" Fixed Display
  • ISO 100 - 6400 (Bump to 25600)
  • No Anti-Alias Filter
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Nikon F Mount
  • 765g - 136 x 107 x 76mm
  • Revealed April 2013
  • Previous Model is Nikon D7000
  • Replacement is Nikon D7200
Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 3200 (Push to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Launched June 2008
  • Previous Model is Pentax K10D
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Nikon D7100 vs Pentax K20D Overview

In this article, we will be comparing the Nikon D7100 vs Pentax K20D, both Advanced DSLR cameras by brands Nikon and Pentax. There is a substantial difference among the resolutions of the D7100 (24MP) and K20D (15MP) but they possess the same exact sensor sizing (APS-C).

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The D7100 was announced 4 years after the K20D which is a fairly big difference as far as camera tech is concerned. Each of the cameras offer the identical body type (Mid-size SLR).

Before going through a in depth comparison, below is a quick introduction of how the D7100 matches up vs the K20D with regard to portability, imaging, features and an overall mark.

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Reasons to pick Nikon D7100 over the Pentax K20D

 D7100 K20D 
LaunchedApril 2013June 2008Newer by 59 months
Screen sizing3.2"2.7"Bigger screen (+0.5")
Screen resolution1229k230kClearer screen (+999k dot)

Reasons to pick Pentax K20D over the Nikon D7100

 K20D D7100 

Common features in the Nikon D7100 and Pentax K20D

 D7100 K20D 
Manually focus Dial accurate focus
Screen typeFixed Fixed Fixed screen
Selfie screen Lack of selfie screen
Touch screen Lack of Touch screen

Nikon D7100 vs Pentax K20D Physical Comparison

If you are planning to travel with your camera frequently, you're going to have to consider its weight and dimensions. The Nikon D7100 enjoys external measurements of 136mm x 107mm x 76mm (5.4" x 4.2" x 3.0") along with a weight of 765 grams (1.69 lbs) while the Pentax K20D has dimensions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") accompanied by a weight of 800 grams (1.76 lbs).

Take a look at the Nikon D7100 vs Pentax K20D in our newest Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will differ depending on the lens you are employing at the time. Following is the front view size comparison of the D7100 versus the K20D.

Nikon D7100 vs Pentax K20D size comparison

Looking at size and weight, the portability rating of the D7100 and K20D is 59 and 59 respectively.

Nikon D7100 vs Pentax K20D top view buttons comparison

Nikon D7100 vs Pentax K20D Sensor Comparison

Generally, it is difficult to visualize the gap in sensor dimensions simply by viewing technical specs. The picture underneath will help provide you a greater sense of the sensor measurements in the D7100 and K20D.

As you can tell, both cameras enjoy the same exact sensor sizing albeit different MP. You can count on the Nikon D7100 to provide you with extra detail with its extra 9 Megapixels. Higher resolution will allow you to crop photographs far more aggressively. The newer D7100 should have an advantage with regard to sensor technology.

Nikon D7100 vs Pentax K20D sensor size comparison

Nikon D7100 vs Pentax K20D Screen and ViewFinder

Nikon D7100 vs Pentax K20D Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Nikon D7100 Portrait photography details
Pentax K20D Portrait photography details
79
focusing manually
megapixel count decent (24 megapixels)
sensor size is good (APS-C)
provides face detection focus
supports RAW files
72
manual focus
resolution is good (15 megapixels)
sensor size is good (APS-C)
delivers RAW files
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Street Comparison

Nikon D7100 Street photography information
Pentax K20D Street photography information
60
sensor size is good (APS-C)
supports RAW files
environment proof
no moving screen
does not have image stabilization
65
built in image stabilization (Sensor based)
sensor size is good (APS-C)
delivers RAW files
environment sealing
fixed screen
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Sports Comparison

Nikon D7100 as a Sports photography camera
Pentax K20D as a Sports photography camera
70
max shutter speed is good (1/8,000 seconds)
megapixel count decent (24 megapixels)
sensor size is good (APS-C)
provides tracking autofocus
environment proof
supports phase detect auto focus
max frames per second very slow (6.0 frames/s)
does not have image stabilization
68
built in image stabilization (Sensor based)
resolution is good (15 megapixels)
sensor size is good (APS-C)
environment sealing
sensor has phase detect auto focus
max frames per second low (3.0 frames per second)
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Travel Comparison

Nikon D7100 Travel photography details
Pentax K20D Travel photography details
66
environment proof
megapixel count decent (24 megapixels)
has built in flash
screen isn't selfie friendly
64
environment sealing
resolution is good (15MP)
built-in flash
does not have a selfie friendly display
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Landscape Comparison

Nikon D7100 as a Landscape photography camera
Pentax K20D as a Landscape photography camera
76
focusing manually
change lenses (Nikon F mount)
screen is a decent size (3.2 inches)
megapixel count decent (24MP)
sensor size is good (APS-C)
doesnt have anti aliasing filter
supports RAW files
environment proof
has double storage slots
does not have image stabilization
71
manual focus
switch lenses (Pentax KAF2 mount)
built in image stabilization (Sensor based)
resolution is good (15 megapixels)
sensor size is good (APS-C)
delivers RAW files
environment sealing
tiny screen (2.7 inch)
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Vlogging Comparison

Nikon D7100 Vlogging factors
Pentax K20D Vlogging factors
30
provides face detection focus
high quality video (1920 x 1080 pixels)
comes with external microphone port
screen isn't selfie friendly
does not have image stabilization
9
lack of video recording
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Nikon D7100 vs Pentax K20D Specifications

Detailed spec comparison table for Nikon D7100 and Pentax K20D
 Nikon D7100Pentax K20D
General Information
Company Nikon Pentax
Model Nikon D7100 Pentax K20D
Class Advanced DSLR Advanced DSLR
Revealed 2013-04-25 2008-06-25
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor measurements 23.5 x 15.6mm 23.4 x 15.6mm
Sensor surface area 366.6mm² 365.0mm²
Sensor resolution 24 megapixels 15 megapixels
Anti aliasing filter
Aspect ratio 3:2 and 16:9 3:2
Max resolution 6000 x 4000 4672 x 3104
Max native ISO 6400 3200
Max enhanced ISO 25600 6400
Min native ISO 100 100
RAW format
Autofocusing
Focus manually
AF touch
AF continuous
AF single
AF tracking
AF selectice
AF center weighted
Multi area AF
Live view AF
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 51 11
Cross focus points 15 -
Lens
Lens mount Nikon F Pentax KAF2
Amount of lenses 309 151
Focal length multiplier 1.5 1.5
Screen
Display type Fixed Type Fixed Type
Display sizing 3.2 inches 2.7 inches
Resolution of display 1,229 thousand dots 230 thousand dots
Selfie friendly
Liveview
Touch operation
Display tech Wide Viewing Angle TFT-LCD monitor -
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 95%
Viewfinder magnification 0.63x 0.64x
Features
Minimum shutter speed 30 secs 30 secs
Fastest shutter speed 1/8000 secs 1/4000 secs
Continuous shutter rate 6.0 frames per sec 3.0 frames per sec
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set WB
Image stabilization
Integrated flash
Flash range 12.00 m (at ISO 100) 13.00 m (at ISO 100)
Flash modes Auto, On, Off, Red-eye, Slow sync, Rear curtain Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless
Hot shoe
AE bracketing
WB bracketing
Fastest flash synchronize 1/250 secs 1/180 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 1920 x 1080 (60, 50, 25, 24 fps), 1280 x 720 (60, 50 fps), 640 x 424 (30, 24 fps) -
Max video resolution 1920x1080 None
Video data format MPEG-4, H.264 -
Microphone support
Headphone support
Connectivity
Wireless Optional None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS Optional None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 765g (1.69 lbs) 800g (1.76 lbs)
Dimensions 136 x 107 x 76mm (5.4" x 4.2" x 3.0") 142 x 101 x 70mm (5.6" x 4.0" x 2.8")
DXO scores
DXO Overall score 83 65
DXO Color Depth score 24.2 22.9
DXO Dynamic range score 13.7 11.1
DXO Low light score 1256 639
Other
Battery life 950 images -
Battery style Battery Pack -
Battery model EN-EL15 D-LI50
Self timer Yes (2 or 10 seconds) Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC/SDXC x 2 slots SD/MMC/SDHC card
Card slots Two 1
Cost at release $800 $700