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Nikon D810A vs Pentax K-3 II

Portability
55
Imaging
75
Features
80
Overall
77
Nikon D810A front
 
Pentax K-3 II front
Portability
59
Imaging
66
Features
84
Overall
73

Nikon D810A vs Pentax K-3 II Key Specs

Nikon D810A
(Full Review)
  • 36MP - Full frame Sensor
  • 3.2" Fixed Screen
  • ISO 200 - 12800 (Raise to 51200)
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Nikon F Mount
  • 880g - 146 x 123 x 82mm
  • Revealed February 2015
Pentax K-3 II
(Full Review)
  • 24MP - APS-C Sensor
  • 3.2" Fixed Screen
  • ISO 100 - 51200
  • Sensor based Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Pentax KAF2 Mount
  • 800g - 131 x 100 x 77mm
  • Released April 2015
  • Older Model is Pentax K-3
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Nikon D810A vs Pentax K-3 II Overview

Here is a extensive review of the Nikon D810A and Pentax K-3 II, both Advanced DSLR digital cameras by rivals Nikon and Pentax. There exists a substantial gap between the image resolutions of the D810A (36MP) and K-3 II (24MP) and the D810A (Full frame) and K-3 II (APS-C) use different sensor measurements.

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The D810A was introduced 2 months prior to the K-3 II which means that they are both of a similar age. Each of these cameras come with the identical body type (Mid-size SLR).

Before we go through a detailed comparison, below is a brief overview of how the D810A matches up against the K-3 II with regards to portability, imaging, features and an overall rating.

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Reasons to pick Nikon D810A over the Pentax K-3 II

 D810A K-3 II 
Screen resolution1229k1037kClearer screen (+192k dot)

Reasons to pick Pentax K-3 II over the Nikon D810A

 K-3 II D810A 

Common features in the Nikon D810A and Pentax K-3 II

 D810A K-3 II 
ReleasedFebruary 2015April 2015Similar age
Focus manually Dial precise focus
Screen typeFixed Fixed Fixed screen
Screen dimension3.2"3.2"Identical screen measurements
Selfie screen No selfie screen
Touch screen No Touch screen

Nikon D810A vs Pentax K-3 II Physical Comparison

When you are aiming to carry your camera, you'll need to consider its weight and dimensions. The Nikon D810A features outside dimensions of 146mm x 123mm x 82mm (5.7" x 4.8" x 3.2") with a weight of 880 grams (1.94 lbs) and the Pentax K-3 II has dimensions of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") with a weight of 800 grams (1.76 lbs).

Take a look at the Nikon D810A and Pentax K-3 II in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an ILC will vary depending on the lens you select during that time. Following is the front view measurements comparison of the D810A vs the K-3 II.

Nikon D810A vs Pentax K-3 II size comparison

Using dimensions and weight, the portability score of the D810A and K-3 II is 55 and 59 respectively.

Nikon D810A vs Pentax K-3 II top view buttons comparison

Nikon D810A vs Pentax K-3 II Sensor Comparison

Sometimes, it is hard to visualize the difference between sensor sizing purely by reading technical specs. The visual underneath will help offer you a better sense of the sensor dimensions in the D810A and K-3 II.

As you can tell, the two cameras posses different resolutions and different sensor sizing. The D810A with its bigger sensor is going to make shooting shallow depth of field less difficult and the Nikon D810A will offer greater detail using its extra 12MP. Higher resolution will also let you crop pictures somewhat more aggressively.

Nikon D810A vs Pentax K-3 II sensor size comparison

Nikon D810A vs Pentax K-3 II Screen and ViewFinder

Nikon D810A vs Pentax K-3 II Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Nikon D810A as a Portrait photography camera
Pentax K-3 II as a Portrait photography camera
85
manual focus
megapixel count excellent (36MP)
sensor size is large (Full frame)
has face detect focusing
saves RAW formats
79
focusing manually
decent sensor resolution (24 megapixels)
good sensor size (APS-C)
has face detect autofocus
delivers RAW files
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Street Comparison

Nikon D810A Street photography features
Pentax K-3 II Street photography features
60
sensor size is large (Full frame)
saves RAW formats
environment sealing
no moving screen
no image stabilization
69
built in image stabilization (Sensor based)
good sensor size (APS-C)
delivers RAW files
weather sealing
above average ISO range (51,200)
fixed screen
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Sports Comparison

Sports photography with Nikon D810A
Sports photography with Pentax K-3 II
76
high shutter speed (1/8,000s)
megapixel count excellent (36MP)
sensor size is large (Full frame)
has tracking focus
environment sealing
better than average battery (1,200 shots)
sensor has phase detect AF
max frames per second low (5.0 frames per second)
no image stabilization
76
maximum shutter speed is high (1/8,000s)
built in image stabilization (Sensor based)
decent sensor resolution (24MP)
good sensor size (APS-C)
has tracking focus
weather sealing
has phase detect autofocus
terrible battery life (720 CIPA)
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Travel Comparison

Nikon D810A as a Travel photography camera
Pentax K-3 II as a Travel photography camera
69
better than average battery (1,200 per charge)
environment sealing
megapixel count excellent (36 megapixels)
has built in flash
screen is not selfie friendly
56
weather sealing
decent sensor resolution (24MP)
terrible battery life (720 shots)
does not posses selfie friendly screen
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Landscape Comparison

Nikon D810A Landscape photography info
Pentax K-3 II Landscape photography info
80
manual focus
swap lenses (Nikon F mount)
screen is a decent size (3.2 inches)
megapixel count excellent (36MP)
sensor size is large (Full frame)
saves RAW formats
environment sealing
better than average battery (1,200 shots)
has double storage slots
no image stabilization
78
focusing manually
swap lenses (Pentax KAF2 mount)
screen size is good (3.2 inches)
built in image stabilization (Sensor based)
decent sensor resolution (24MP)
good sensor size (APS-C)
no anti aliasing filter
above average ISO range (51,200)
delivers RAW files
weather sealing
two card slots
terrible battery life (720 shots)
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Vlogging Comparison

Nikon D810A Vlogging info
Pentax K-3 II Vlogging info
30
has face detect focusing
high res video (1920 x 1080 resolution)
includes mic port
screen is not selfie friendly
no image stabilization
34
built in image stabilization (Sensor based)
has face detect autofocus
high res video (1920 x 1080 pixels)
has mic socket
does not posses selfie friendly screen
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Nikon D810A vs Pentax K-3 II Specifications

Detailed spec comparison table for Nikon D810A and Pentax K-3 II
 Nikon D810APentax K-3 II
General Information
Make Nikon Pentax
Model Nikon D810A Pentax K-3 II
Class Advanced DSLR Advanced DSLR
Revealed 2015-02-10 2015-04-23
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Processor EXPEED 4 Prime III
Sensor type CMOS CMOS
Sensor size Full frame APS-C
Sensor dimensions 35.9 x 24mm 23.5 x 15.6mm
Sensor surface area 861.6mm² 366.6mm²
Sensor resolution 36MP 24MP
Anti aliasing filter
Aspect ratio 5:4 and 3:2 3:2
Peak resolution 7360 x 4912 6016 x 4000
Highest native ISO 12800 51200
Highest enhanced ISO 51200 -
Minimum native ISO 200 100
RAW pictures
Minimum enhanced ISO 100 -
Autofocusing
Focus manually
Autofocus touch
Autofocus continuous
Single autofocus
Autofocus tracking
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Number of focus points 51 27
Cross focus points 15 25
Lens
Lens mount Nikon F Pentax KAF2
Available lenses 309 151
Crop factor 1 1.5
Screen
Type of screen Fixed Type Fixed Type
Screen diagonal 3.2 inches 3.2 inches
Screen resolution 1,229k dots 1,037k dots
Selfie friendly
Liveview
Touch friendly
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.7x 0.64x
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/8000 seconds
Continuous shutter rate 5.0 frames per second 8.3 frames per second
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change white balance
Image stabilization
Built-in flash
Flash range 12.00 m (at ISO 100) no built-in flash
Flash settings Front-curtain sync, slow sync, rear-curtain sync, redeye reduction, redeye reduction w/slow sync, slow rear-curtain sync Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync (available with dedicated external flash)
Hot shoe
Auto exposure bracketing
WB bracketing
Fastest flash synchronize - 1/180 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 (60p, 50p, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p)
Highest video resolution 1920x1080 1920x1080
Video format MPEG-4, H.264 MPEG-4, H.264
Mic port
Headphone port
Connectivity
Wireless Optional Optional
Bluetooth
NFC
HDMI
USB USB 3.0 (5 GBit/sec) USB 3.0 (5 GBit/sec)
GPS Optional BuiltIn
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 880g (1.94 lbs) 800g (1.76 lbs)
Dimensions 146 x 123 x 82mm (5.7" x 4.8" x 3.2") 131 x 100 x 77mm (5.2" x 3.9" x 3.0")
DXO scores
DXO Overall score not tested 80
DXO Color Depth score not tested 23.6
DXO Dynamic range score not tested 13.6
DXO Low light score not tested 1106
Other
Battery life 1200 pictures 720 pictures
Form of battery Battery Pack Battery Pack
Battery model EN-EL15 D-LI90
Self timer Yes (2, 5, 10, 20 secs for up to 9 shots) Yes ( 2 or 12 seconds)
Time lapse feature
Storage type SD/SDHC/SDXC, CompactFlash (UDMA compliant) Dual SD/SDHC/SDXC
Card slots Dual Dual
Price at release $3,800 $829