Nikon D810 vs Pentax K-3
54 Imaging
74 Features
78 Overall
75


59 Imaging
65 Features
85 Overall
73
Nikon D810 vs Pentax K-3 Key Specs
(Full Review)
- 36MP - Full frame Sensor
- 3.2" Fixed Screen
- ISO 64 - 12800 (Increase to 51200)
- No Anti-Alias Filter
- 1/8000s Maximum Shutter
- 1920 x 1080 video
- Nikon F Mount
- 980g - 146 x 123 x 82mm
- Announced June 2014
- Earlier Model is Nikon D800
- Renewed by Nikon D850
(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
- Launched April 2014
- Later Model is Pentax K-3 II

Nikon D810 vs Pentax K-3 Overview
Below is a extensive analysis of the Nikon D810 and Pentax K-3, both Advanced DSLR digital cameras by manufacturers Nikon and Pentax. There is a substantial difference between the resolutions of the D810 (36MP) and K-3 (24MP) and the D810 (Full frame) and K-3 (APS-C) come with different sensor size.

The D810 was launched 3 months later than the K-3 and they are both of a similar age. Each of these cameras offer the identical body type (Mid-size SLR).
Before getting through a complete comparison, below is a simple overview of how the D810 grades against the K-3 with respect to portability, imaging, features and an overall grade.

Nikon D810 vs Pentax K-3 Gallery
Below is a preview of the gallery images for Nikon D810 & Pentax K-3. The complete galleries are provided at Nikon D810 Gallery & Pentax K-3 Gallery.
Reasons to pick Nikon D810 over the Pentax K-3
D810 | K-3 | |||
---|---|---|---|---|
Screen resolution | 1229k | ![]() | 1037k | Clearer screen (+192k dot) |
Reasons to pick Pentax K-3 over the Nikon D810
K-3 | D810 |
---|
Common features in the Nikon D810 and Pentax K-3
D810 | K-3 | |||
---|---|---|---|---|
Launched | June 2014 | ![]() | April 2014 | Similar age |
Manual focus | ![]() | More exact focusing | ||
Screen type | Fixed | ![]() | Fixed | Fixed screen |
Screen sizing | 3.2" | ![]() | 3.2" | Equivalent screen size |
Selfie screen | ![]() | Neither provides selfie screen | ||
Touch friendly screen | ![]() | Missing Touch friendly screen |
Nikon D810 vs Pentax K-3 Physical Comparison
If you're intending to lug around your camera frequently, you'll have to factor its weight and volume. The Nikon D810 provides outside measurements of 146mm x 123mm x 82mm (5.7" x 4.8" x 3.2") having a weight of 980 grams (2.16 lbs) and the Pentax K-3 has sizing of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") having a weight of 800 grams (1.76 lbs).
See the Nikon D810 and Pentax K-3 in our brand new Camera & Lens Size Comparison Tool.
Take into account, the weight of an ILC will vary depending on the lens you are utilizing at that time. The following is the front view size comparison of the D810 compared to the K-3.

Factoring in size and weight, the portability grade of the D810 and K-3 is 54 and 59 respectively.

Nikon D810 vs Pentax K-3 Sensor Comparison
Generally, its tough to imagine the gap between sensor measurements simply by reading through specs. The graphic underneath may provide you a much better sense of the sensor sizing in the D810 and K-3.
All in all, both cameras enjoy different megapixels and different sensor measurements. The D810 featuring a bigger sensor is going to make getting shallow DOF simpler and the Nikon D810 will give you extra detail utilizing its extra 12MP. Higher resolution will also let you crop shots far more aggressively.

Nikon D810 vs Pentax K-3 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Nikon D810 vs Pentax K-3 Specifications
Nikon D810 | Pentax K-3 | |
---|---|---|
General Information | ||
Brand Name | Nikon | Pentax |
Model type | Nikon D810 | Pentax K-3 |
Class | Advanced DSLR | Advanced DSLR |
Announced | 2014-06-26 | 2014-04-10 |
Body design | Mid-size SLR | Mid-size SLR |
Sensor Information | ||
Processor Chip | EXPEED 4 | Prime III |
Sensor type | CMOS | CMOS |
Sensor size | Full frame | APS-C |
Sensor measurements | 35.9 x 24mm | 23.5 x 15.6mm |
Sensor surface area | 861.6mm² | 366.6mm² |
Sensor resolution | 36 megapixel | 24 megapixel |
Anti alias filter | ||
Aspect ratio | 5:4 and 3:2 | 3:2 |
Maximum resolution | 7360 x 4912 | 6016 x 4000 |
Maximum native ISO | 12800 | 51200 |
Maximum boosted ISO | 51200 | - |
Lowest native ISO | 64 | 100 |
RAW data | ||
Lowest boosted ISO | 32 | - |
Autofocusing | ||
Focus manually | ||
Autofocus touch | ||
Autofocus continuous | ||
Autofocus single | ||
Autofocus tracking | ||
Selective autofocus | ||
Autofocus center weighted | ||
Multi area autofocus | ||
Autofocus live view | ||
Face detection focus | ||
Contract detection focus | ||
Phase detection focus | ||
Total focus points | 51 | 27 |
Cross type focus points | 15 | 25 |
Lens | ||
Lens mount type | Nikon F | Pentax KAF2 |
Total lenses | 309 | 151 |
Focal length multiplier | 1 | 1.5 |
Screen | ||
Screen type | Fixed Type | Fixed Type |
Screen diagonal | 3.2 inches | 3.2 inches |
Screen resolution | 1,229 thousand dot | 1,037 thousand dot |
Selfie friendly | ||
Liveview | ||
Touch screen | ||
Screen tech | TFT-LCD (WRGB) | TFT LCD monitor |
Viewfinder Information | ||
Viewfinder type | Optical (pentaprism) | Optical (pentaprism) |
Viewfinder coverage | 100% | 100% |
Viewfinder magnification | 0.7x | 0.64x |
Features | ||
Lowest shutter speed | 30s | 30s |
Highest shutter speed | 1/8000s | 1/8000s |
Continuous shooting speed | 5.0 frames per second | 8.0 frames per second |
Shutter priority | ||
Aperture priority | ||
Expose Manually | ||
Exposure compensation | Yes | Yes |
Set white balance | ||
Image stabilization | ||
Built-in flash | ||
Flash distance | 12.00 m (at ISO 100) | 13.00 m (at ISO 100) |
Flash settings | Front-curtain sync, slow sync, rear-curtain sync, redeye reduction, redeye reduction w/slow sync, slow rear-curtain sync | Auto, on, off, red-eye, slow sync, slow sync + red-eye, trailing curtain sync, high speed, wireless, manual |
Hot shoe | ||
AE bracketing | ||
WB bracketing | ||
Highest flash sync | 1/250s | 1/180s |
Exposure | ||
Multisegment | ||
Average | ||
Spot | ||
Partial | ||
AF area | ||
Center weighted | ||
Video features | ||
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) |
Maximum video resolution | 1920x1080 | 1920x1080 |
Video file format | MPEG-4, H.264 | MPEG-4, H.264 |
Microphone input | ||
Headphone input | ||
Connectivity | ||
Wireless | Optional | None |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | USB 3.0 (5 GBit/sec) | USB 3.0 (5 GBit/sec) |
GPS | Optional | Optional |
Physical | ||
Environmental seal | ||
Water proofing | ||
Dust proofing | ||
Shock proofing | ||
Crush proofing | ||
Freeze proofing | ||
Weight | 980 gr (2.16 lbs) | 800 gr (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 All around rating | 97 | 80 |
DXO Color Depth rating | 25.7 | 23.7 |
DXO Dynamic range rating | 14.8 | 13.4 |
DXO Low light rating | 2853 | 1216 |
Other | ||
Battery life | 1200 photos | 560 photos |
Battery format | Battery Pack | Battery Pack |
Battery ID | EN-EL15 | D-LI90 |
Self timer | Yes (2, 5, 10, 20 secs for up to 9 shots) | Yes ( 2 or 12 seconds) |
Time lapse recording | ||
Type of storage | SD/SDHC/SDXC, CompactFlash (UDMA compliant) | Dual SD/SDHC/SDXC |
Storage slots | Two | Two |
Pricing at launch | $1,999 | $639 |