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Pentax 645D vs Samsung NX100

Portability
50
Imaging
76
Features
52
Overall
66
Pentax 645D front
 
Samsung NX100 front
Portability
88
Imaging
55
Features
54
Overall
54

Pentax 645D vs Samsung NX100 Key Specs

Pentax 645D
(Full Review)
  • 40MP - Medium format Sensor
  • 3" Fixed Screen
  • ISO 200 - 1600
  • No Anti-Alias Filter
  • No Video
  • Pentax 645AF2 Mount
  • 1480g - 156 x 117 x 119mm
  • Announced March 2010
  • New Model is Pentax 645Z
Samsung NX100
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 6400
  • 1280 x 720 video
  • Samsung NX Mount
  • 282g - 120 x 71 x 35mm
  • Revealed September 2010
  • Replacement is Samsung NX200
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Pentax 645D vs Samsung NX100 Overview

Let's take a closer look at the Pentax 645D vs Samsung NX100, former is a Pro DSLR while the other is a Entry-Level Mirrorless by brands Pentax and Samsung. There exists a large gap among the resolutions of the 645D (40MP) and NX100 (15MP) and the 645D (Medium format) and NX100 (APS-C) boast totally different sensor dimensions.

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The 645D was revealed 6 months prior to the NX100 and they are of a similar age. Each of these cameras feature different body design with the Pentax 645D being a Large SLR camera and the Samsung NX100 being a Rangefinder-style mirrorless camera.

Before getting into a comprehensive comparison, here is a brief summary of how the 645D matches up versus the NX100 in terms of portability, imaging, features and an overall score.

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Reasons to pick Pentax 645D over the Samsung NX100

 645D NX100 
Display resolution921k614kSharper display (+307k dot)

Reasons to pick Samsung NX100 over the Pentax 645D

 NX100 645D 

Common features in the Pentax 645D and Samsung NX100

 645D NX100 
RevealedMarch 2010September 2010Same age
Manual focus Very precise focus
Display typeFixed Fixed Fixed display
Display size3"3"Same display sizing
Selfie screen No selfie screen
Touch friendly display Neither contains Touch friendly display

Pentax 645D vs Samsung NX100 Physical Comparison

When you are looking to carry around your camera, you're going to have to factor in its weight and proportions. The Pentax 645D has got outer measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs) and the Samsung NX100 has measurements of 120mm x 71mm x 35mm (4.7" x 2.8" x 1.4") accompanied by a weight of 282 grams (0.62 lbs).

Look at the Pentax 645D vs Samsung NX100 in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will change dependant on the lens you have attached at that time. Following is a front view sizing comparison of the 645D vs the NX100.

Pentax 645D vs Samsung NX100 size comparison

Looking at dimensions and weight, the portability score of the 645D and NX100 is 50 and 88 respectively.

Pentax 645D vs Samsung NX100 top view buttons comparison

Pentax 645D vs Samsung NX100 Sensor Comparison

Typically, it's hard to envision the contrast in sensor sizes purely by looking through specs. The pic here will help give you a stronger sense of the sensor sizing in the 645D and NX100.

All in all, each of the cameras feature different megapixel count and different sensor sizes. The 645D using its larger sensor will make shooting shallow depth of field simpler and the Pentax 645D will provide you with more detail because of its extra 25MP. Greater resolution will also let you crop images way more aggressively.

Pentax 645D vs Samsung NX100 sensor size comparison

Pentax 645D vs Samsung NX100 Screen and ViewFinder

Pentax 645D vs Samsung NX100 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax 645D Portrait photography factors
Samsung NX100 Portrait photography factors
77
has manual focus
MP count fantastic (40 megapixels)
sensor size is great (Medium format)
exports RAW formats
no liveview
73
has manual focus
sensor resolution is decent (15MP)
sensor size is decent (APS-C)
includes face detect focus
delivers RAW files
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Street Comparison

Pentax 645D Street photography factors
Samsung NX100 Street photography factors
58
sensor size is great (Medium format)
exports RAW formats
weather proof
screen is fixed
does not have image stabilization
76
has image stabilization
sensor size is decent (APS-C)
delivers RAW files
screen is fixed
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Sports Comparison

Pentax 645D Sports photography advice
Samsung NX100 Sports photography advice
63
MP count fantastic (40 megapixels)
sensor size is great (Medium format)
weather proof
supports phase detect autofocus
no liveview
max frames per second low (1.0 frames per second)
does not have image stabilization
low battery power (800 per charge)
60
has image stabilization
sensor resolution is decent (15MP)
sensor size is decent (APS-C)
better than average battery life (420 CIPA)
continuous shooting slow (3.0 frames/s)
lacks phase detect auto focus
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Travel Comparison

Pentax 645D Travel photography info
Samsung NX100 Travel photography info
55
weather proof
MP count fantastic (40 megapixels)
low battery power (800 CIPA)
display is not selfie friendly
66
better than average battery life (420 per charge)
sensor resolution is decent (15 megapixels)
does not have Time Lapse recording
screen isn't selfie friendly
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Landscape Comparison

Pentax 645D Landscape photography highlights
Samsung NX100 Landscape photography highlights
72
has manual focus
switch lenses (Pentax 645AF2 mount)
nice screen size (3 inch)
MP count fantastic (40 megapixels)
sensor size is great (Medium format)
no anti-alias filter
exports RAW formats
weather proof
has dual storage slots
no liveview
does not have image stabilization
low battery power (800 shots)
75
has manual focus
change lenses (Samsung NX mount)
screen size is decent (3 inch)
has image stabilization
sensor resolution is decent (15 megapixels)
sensor size is decent (APS-C)
delivers RAW files
better than average battery life (420 per charge)
does not have Time Lapse recording
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Vlogging Comparison

Pentax 645D Vlogging info
Samsung NX100 Vlogging info
9
lack of video recording
31
has image stabilization
includes face detect focus
screen isn't selfie friendly
low video resolution (1280 x 720 pxls)
does not have mic port
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Pentax 645D vs Samsung NX100 Specifications

Detailed spec comparison table for Pentax 645D and Samsung NX100
 Pentax 645DSamsung NX100
General Information
Brand Pentax Samsung
Model Pentax 645D Samsung NX100
Category Pro DSLR Entry-Level Mirrorless
Announced 2010-03-10 2010-09-14
Body design Large SLR Rangefinder-style mirrorless
Sensor Information
Processor Chip Prime II DRIMe Engine
Sensor type CCD CMOS
Sensor size Medium format APS-C
Sensor dimensions 44 x 33mm 23.4 x 15.6mm
Sensor area 1,452.0mm² 365.0mm²
Sensor resolution 40MP 15MP
Anti aliasing filter
Aspect ratio 4:3 3:2 and 16:9
Max resolution 7264 x 5440 4592 x 3056
Max native ISO 1600 6400
Minimum native ISO 200 100
RAW support
Minimum enhanced ISO 100 -
Autofocusing
Manual focus
Touch to focus
Continuous autofocus
Autofocus single
Autofocus tracking
Autofocus selectice
Center weighted autofocus
Autofocus multi area
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points 11 15
Lens
Lens mount Pentax 645AF2 Samsung NX
Total lenses 6 32
Crop factor 0.8 1.5
Screen
Range of screen Fixed Type Fixed Type
Screen diagonal 3 inches 3 inches
Screen resolution 921 thousand dot 614 thousand dot
Selfie friendly
Liveview
Touch functionality
Screen technology TFT Color LCD with wide-viewing angle and with AR coating VGA AMOLED
Viewfinder Information
Viewfinder type Optical (pentaprism) Electronic (optional)
Viewfinder coverage 98% -
Viewfinder magnification 0.85x -
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/4000 seconds 1/4000 seconds
Continuous shutter speed 1.0 frames/s 3.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Set white balance
Image stabilization
Inbuilt flash
Flash range no built-in flash no built-in flash
Flash modes Auto, On, Off, Red-eye, Slow Sync, Rear Curtain Auto, On, Off, Red-eye, Fill-in, 1st/2nd Curtain, Smart Flash, Manual
External flash
AE bracketing
White balance bracketing
Fastest flash sync 1/125 seconds 1/180 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Supported video resolutions - 1280 x 720 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps)
Max video resolution None 1280x720
Video file format - H.264
Mic jack
Headphone jack
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None Optional
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 1480 gr (3.26 pounds) 282 gr (0.62 pounds)
Physical dimensions 156 x 117 x 119mm (6.1" x 4.6" x 4.7") 120 x 71 x 35mm (4.7" x 2.8" x 1.4")
DXO scores
DXO Overall score 82 62
DXO Color Depth score 24.6 22.6
DXO Dynamic range score 12.6 10.7
DXO Low light score 1262 563
Other
Battery life 800 pictures 420 pictures
Style of battery Battery Pack Battery Pack
Battery model D-LI90 BP1130
Self timer Yes (2 or 10 sec) Yes (2 sec to 30 sec)
Time lapse feature
Storage media SD/SDHC SD/SDHC
Storage slots 2 1
Price at release $4,000 $386