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Nikon D300S vs Pentax K-3 III

Portability
55
Imaging
52
Features
65
Overall
57
Nikon D300S front
 
Pentax K-3 Mark III front
Portability
58
Imaging
71
Features
86
Overall
77

Nikon D300S vs Pentax K-3 III Key Specs

Nikon D300S
(Full Review)
  • 12MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 200 - 3200 (Bump to 6400)
  • 1/8000s Maximum Shutter
  • 1280 x 720 video
  • Nikon F Mount
  • 938g - 147 x 114 x 74mm
  • Released November 2009
  • Succeeded the Nikon D300
  • Updated by Nikon D600
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
  • Revealed March 2021
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Nikon D300S vs Pentax K-3 III Overview

Here is a extended review of the Nikon D300S versus Pentax K-3 III, both Advanced DSLR cameras by rivals Nikon and Pentax. There is a noticeable difference among the image resolutions of the D300S (12MP) and K-3 III (26MP) but both cameras offer the same sensor dimensions (APS-C).

Photography Glossary

The D300S was brought out 12 years prior to the K-3 III and that is a fairly sizable difference as far as camera tech is concerned. Each of the cameras have the same body design (Mid-size SLR).

Before we go right into a in-depth comparison, here is a concise introduction of how the D300S grades versus the K-3 III in the way of portability, imaging, features and an overall rating.

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Reasons to pick Nikon D300S over the Pentax K-3 III

 D300S K-3 III 

Reasons to pick Pentax K-3 III over the Nikon D300S

 K-3 III D300S 
RevealedMarch 2021November 2009Fresher by 138 months
Screen dimensions3.2"3"Bigger screen (+0.2")
Screen resolution1620k920kSharper screen (+700k dot)
Touch friendly screen Quickly navigate

Common features in the Nikon D300S and Pentax K-3 III

 D300S K-3 III 
Manual focus Dial exact focusing
Screen typeFixed Fixed Fixed screen
Selfie screen Neither comes with selfie screen

Nikon D300S vs Pentax K-3 III Physical Comparison

For anyone who is intending to carry your camera, you should factor in its weight and proportions. The Nikon D300S comes with outside dimensions of 147mm x 114mm x 74mm (5.8" x 4.5" x 2.9") having a weight of 938 grams (2.07 lbs) and the Pentax K-3 III has measurements of 135mm x 104mm x 74mm (5.3" x 4.1" x 2.9") with a weight of 820 grams (1.81 lbs).

Contrast the Nikon D300S versus Pentax K-3 III in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an ILC will vary dependant on the lens you choose at the time. Underneath is a front view over all size comparison of the D300S versus the K-3 III.

Nikon D300S vs Pentax K-3 III size comparison

Using size and weight, the portability rating of the D300S and K-3 III is 55 and 58 respectively.

Nikon D300S vs Pentax K-3 III top view buttons comparison

Nikon D300S vs Pentax K-3 III Sensor Comparison

Usually, its hard to visualise the difference in sensor sizing simply by researching a spec sheet. The visual underneath might give you a more clear sense of the sensor dimensions in the D300S and K-3 III.

Clearly, both of the cameras have the same sensor dimensions albeit not the same MP. You can count on the Pentax K-3 III to result in more detail having its extra 14 Megapixels. Higher resolution will also help you crop photographs a bit more aggressively. The older D300S will be disadvantaged in sensor technology.

Nikon D300S vs Pentax K-3 III sensor size comparison

Nikon D300S vs Pentax K-3 III Screen and ViewFinder

Nikon D300S vs Pentax K-3 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Nikon D300S Portrait photography highlights
Pentax K-3 III Portrait photography highlights
63
manual focus
sensor size is good (APS-C)
has face detect autofocus
delivers RAW files
low megapixels (12MP)
82
you can focus manually
megapixel count great (26 megapixels)
sensor size is good (APS-C)
supports face detect focusing
saves RAW files
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Street Comparison

Nikon D300S Street photography factors
Pentax K-3 III Street photography factors
52
sensor size is good (APS-C)
delivers RAW files
weather sealing
fixed screen
lack of image stabilization
heavier than average (938 grams)
70
image stabilization (Sensor based)
sensor size is good (APS-C)
saves RAW files
provides touch focus
weather sealing
good high ISO (1,600,000)
screen is fixed
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Sports Comparison

Sports photography with Nikon D300S
Sports photography with Pentax K-3 III
59
great max shutter speed (1/8,000 seconds)
sensor size is good (APS-C)
weather sealing
has phase detect autofocus
lack of image stabilization
low megapixels (12MP)
79
max shutter speed is good (1/8,000 seconds)
image stabilization (Sensor based)
megapixel count great (26 megapixels)
sensor size is good (APS-C)
supports tracking focus
weather sealing
comes with phase detect AF
bad battery (800 CIPA)
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Travel Comparison

Nikon D300S Travel photography highlights
Pentax K-3 III Travel photography highlights
48
weather sealing
flash built-in
heavier than average (938g)
low megapixels (12 megapixels)
screen isn't selfie friendly
64
weather sealing
connects via bluetooth
provides touch focus
megapixel count great (26MP)
bad battery (800 CIPA)
screen isn't selfie friendly
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Landscape Comparison

Nikon D300S Landscape photography details
Pentax K-3 III Landscape photography details
65
manual focus
swap lenses (Nikon F mount)
nice screen size (3")
sensor size is good (APS-C)
delivers RAW files
weather sealing
has dual storage slots
lack of image stabilization
low megapixels (12MP)
80
you can focus manually
change lenses (Pentax KAF2 mount)
pretty good screen size (3.2 inches)
image stabilization (Sensor based)
megapixel count great (26MP)
sensor size is good (APS-C)
no anti-alias filter
good high ISO (1,600,000)
saves RAW files
weather sealing
has dual storage slots
bad battery (800 CIPA)
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Vlogging Comparison

Nikon D300S Vlogging details
Pentax K-3 III Vlogging details
22
has face detect autofocus
has mic jack
screen isn't selfie friendly
lack of image stabilization
video resolution low (1280 x 720 pixels)
heavier than average (938 grams)
35
built-in touchscreen
image stabilization (Sensor based)
supports face detect focusing
video resolution high (3840 x 2160 resolution)
does have microphone jack
screen isn't selfie friendly
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Nikon D300S vs Pentax K-3 III Specifications

Detailed spec comparison table for Nikon D300S and Pentax K-3 III
 Nikon D300SPentax K-3 Mark III
General Information
Company Nikon Pentax
Model Nikon D300S Pentax K-3 Mark III
Type Advanced DSLR Advanced DSLR
Released 2009-11-16 2021-03-31
Body design Mid-size SLR Mid-size SLR
Sensor Information
Processor Expeed -
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor measurements 23.6 x 15.8mm 23 x 15.5mm
Sensor area 372.9mm² 356.5mm²
Sensor resolution 12 megapixels 26 megapixels
Anti aliasing filter
Aspect ratio 3:2 3:2
Highest resolution 4288 x 2848 6192 x 4128
Highest native ISO 3200 1600000
Highest boosted ISO 6400 -
Minimum native ISO 200 100
RAW format
Minimum boosted ISO 100 -
Autofocusing
Manual focus
Touch focus
Autofocus continuous
Single autofocus
Autofocus tracking
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points 51 101
Cross focus points - 25
Lens
Lens mount Nikon F Pentax KAF2
Available lenses 309 156
Crop factor 1.5 1.6
Screen
Range of screen Fixed Type Fixed Type
Screen sizing 3" 3.2"
Resolution of screen 920 thousand dot 1,620 thousand dot
Selfie friendly
Liveview
Touch friendly
Screen tech Super Density TFT color LCD with wide-viewing angle -
Viewfinder Information
Viewfinder Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100% 100%
Viewfinder magnification 0.63x 0.7x
Features
Slowest shutter speed 30 secs 30 secs
Maximum shutter speed 1/8000 secs 1/8000 secs
Continuous shooting speed 7.0 frames per second 12.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Built-in flash
Flash range 12.00 m (at ISO 100) no built-in flash
Flash options Auto, On, Off, Red-eye, Slow sync, Rear curtain 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
AE bracketing
White balance bracketing
Maximum flash sync 1/250 secs 1/200 secs
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1280 x 720 (24 fps), 640 x 480 (24 fps), 320 x 240 (24 fps) 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
Highest video resolution 1280x720 3840x2160
Video file format Motion JPEG MPEG-4, H.264
Microphone input
Headphone input
Connectivity
Wireless Eye-Fi Connected Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.2 Gen 1 (5 GBit/sec)
GPS Optional None
Physical
Environment seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 938g (2.07 lb) 820g (1.81 lb)
Physical dimensions 147 x 114 x 74mm (5.8" x 4.5" x 2.9") 135 x 104 x 74mm (5.3" x 4.1" x 2.9")
DXO scores
DXO All around score 70 not tested
DXO Color Depth score 22.5 not tested
DXO Dynamic range score 12.2 not tested
DXO Low light score 787 not tested
Other
Battery life 950 photographs 800 photographs
Form of battery Battery Pack Battery Pack
Battery model EN-EL3e D-LI90
Self timer Yes (2, 5, 10 or 20 sec) Yes
Time lapse shooting
Storage media Compact Flash Type I/SD/SDHC Dual SD/SDHC/SDXC slots (UHS-II supported in slot 1)
Storage slots 2 2
Price at launch $1,630 $1,999