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Pentax K20D vs Pentax Q-S1

Portability
59
Imaging
53
Features
52
Overall
52
Pentax K20D front
 
Pentax Q-S1 front
Portability
92
Imaging
38
Features
54
Overall
44

Pentax K20D vs Pentax Q-S1 Key Specs

Pentax K20D
(Full Review)
  • 15MP - APS-C Sensor
  • 2.7" Fixed Screen
  • ISO 100 - 3200 (Boost to 6400)
  • Sensor based Image Stabilization
  • No Video
  • Pentax KAF2 Mount
  • 800g - 142 x 101 x 70mm
  • Introduced June 2008
  • Older Model is Pentax K10D
Pentax Q-S1
(Full Review)
  • 12MP - 1/1.7" Sensor
  • 3" Fixed Display
  • ISO 100 - 12800
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1920 x 1080 video
  • Pentax Q Mount
  • 203g - 105 x 58 x 34mm
  • Launched August 2014
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Pentax K20D vs Pentax Q-S1 Overview

The following is a extensive assessment of the Pentax K20D vs Pentax Q-S1, one is a Advanced DSLR and the other is a Entry-Level Mirrorless and they are both produced by Pentax. There is a significant difference between the image resolutions of the K20D (15MP) and Q-S1 (12MP) and the K20D (APS-C) and Q-S1 (1/1.7") possess different sensor measurements.

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The K20D was revealed 7 years prior to the Q-S1 which is quite a sizable gap as far as tech is concerned. The two cameras offer different body type with the Pentax K20D being a Mid-size SLR camera and the Pentax Q-S1 being a Rangefinder-style mirrorless camera.

Before we go in to a complete comparison, below is a simple view of how the K20D scores against the Q-S1 with regard to portability, imaging, features and an overall mark.

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Reasons to pick Pentax K20D over the Pentax Q-S1

 K20D Q-S1 

Reasons to pick Pentax Q-S1 over the Pentax K20D

 Q-S1 K20D 
LaunchedAugust 2014June 2008Newer by 74 months
Display sizing3"2.7"Larger display (+0.3")
Display resolution460k230kCrisper display (+230k dot)

Common features in the Pentax K20D and Pentax Q-S1

 K20D Q-S1 
Focus manually Dial precise focus
Display typeFixed Fixed Fixed display
Selfie screen Neither has selfie screen
Touch friendly display Lack of Touch friendly display

Pentax K20D vs Pentax Q-S1 Physical Comparison

In case you're intending to travel with your camera frequently, you need to think about its weight and measurements. The Pentax K20D has outer 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) while the Pentax Q-S1 has proportions of 105mm x 58mm x 34mm (4.1" x 2.3" x 1.3") along with a weight of 203 grams (0.45 lbs).

Contrast the Pentax K20D vs Pentax Q-S1 in the all new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are utilising at the time. Following is the front view physical size comparison of the K20D against the Q-S1.

Pentax K20D vs Pentax Q-S1 size comparison

Looking at size and weight, the portability grade of the K20D and Q-S1 is 59 and 92 respectively.

Pentax K20D vs Pentax Q-S1 top view buttons comparison

Pentax K20D vs Pentax Q-S1 Sensor Comparison

Oftentimes, it is very hard to imagine the gap between sensor dimensions just by checking specs. The pic below should offer you a much better sense of the sensor sizes in the K20D and Q-S1.

As you can plainly see, the two cameras offer different megapixels and different sensor dimensions. The K20D using its larger sensor is going to make getting shallow depth of field simpler and the Pentax K20D will give you greater detail because of its extra 3MP. Greater resolution will also enable you to crop pics a little more aggressively. The more aged K20D is going to be disadvantaged in sensor tech.

Pentax K20D vs Pentax Q-S1 sensor size comparison

Pentax K20D vs Pentax Q-S1 Screen and ViewFinder

Pentax K20D vs Pentax Q-S1 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K20D as a Portrait photography camera
Pentax Q-S1 as a Portrait photography camera
71
has manual focus
decent sensor resolution (15MP)
decent sensor size (APS-C)
supports RAW formats
46
focusing manually
supports face detect focusing
supports RAW formats
megapixel count low (12MP)
very small sensor size (1/1.7")
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Street Comparison

Pentax K20D Street photography details
Pentax Q-S1 Street photography details
65
has image stabilization (Sensor based)
decent sensor size (APS-C)
supports RAW formats
weather proof
no moving screen
69
has image stabilization (Sensor based)
supports RAW formats
lighter than competitors (203 grams)
no moving screen
very small sensor size (1/1.7")
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Sports Comparison

Pentax K20D Sports photography advice
Pentax Q-S1 Sports photography advice
68
has image stabilization (Sensor based)
decent sensor resolution (15 megapixels)
decent sensor size (APS-C)
weather proof
supports phase detect auto focus
max frames per second very slow (3.0 frames per second)
37
great max shutter speed (1/8,000 seconds)
has image stabilization (Sensor based)
supports tracking focus
painfully slow continuous shooting (5.0 fps)
megapixel count low (12 megapixels)
very small sensor size (1/1.7")
low battery pack (250 shots)
doesn't have phase detect AF
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Travel Comparison

Pentax K20D as a Travel photography camera
Pentax Q-S1 as a Travel photography camera
64
weather proof
decent sensor resolution (15 megapixels)
built-in flash
screen is not selfie friendly
60
lighter than competitors (203g)
flash built-in
low battery pack (250 per charge)
megapixel count low (12MP)
does not feature selfie friendly screen
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Landscape Comparison

Landscape photography with Pentax K20D
Landscape photography with Pentax Q-S1
70
has manual focus
change lenses (Pentax KAF2 mount)
has image stabilization (Sensor based)
decent sensor resolution (15MP)
decent sensor size (APS-C)
supports RAW formats
weather proof
small screen (2.7")
55
focusing manually
change lenses (Pentax Q mount)
nice screen size (3 inches)
has image stabilization (Sensor based)
supports RAW formats
megapixel count low (12 megapixels)
very small sensor size (1/1.7")
low battery pack (250 shots)
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Vlogging Comparison

Pentax K20D Vlogging advice
Pentax Q-S1 Vlogging advice
9
lack of video recording
35
has image stabilization (Sensor based)
supports face detect focusing
high res video (1920 x 1080 pxls)
lighter than competitors (203 grams)
does not feature selfie friendly screen
no mic jack
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Pentax K20D vs Pentax Q-S1 Specifications

Detailed spec comparison table for Pentax K20D and Pentax Q-S1
 Pentax K20DPentax Q-S1
General Information
Make Pentax Pentax
Model type Pentax K20D Pentax Q-S1
Class Advanced DSLR Entry-Level Mirrorless
Introduced 2008-06-25 2014-08-04
Body design Mid-size SLR Rangefinder-style mirrorless
Sensor Information
Processor Chip - Q Engine
Sensor type CMOS BSI-CMOS
Sensor size APS-C 1/1.7"
Sensor dimensions 23.4 x 15.6mm 7.44 x 5.58mm
Sensor area 365.0mm² 41.5mm²
Sensor resolution 15 megapixels 12 megapixels
Anti alias filter
Aspect ratio 3:2 1:1, 4:3, 3:2 and 16:9
Highest Possible resolution 4672 x 3104 4000 x 3000
Maximum native ISO 3200 12800
Maximum enhanced ISO 6400 -
Min native ISO 100 100
RAW support
Autofocusing
Focus manually
Touch focus
AF continuous
Single AF
Tracking AF
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection AF
Contract detection AF
Phase detection AF
Total focus points 11 -
Lens
Lens support Pentax KAF2 Pentax Q
Total lenses 151 8
Crop factor 1.5 4.8
Screen
Screen type Fixed Type Fixed Type
Screen diagonal 2.7 inches 3 inches
Screen resolution 230 thousand dot 460 thousand dot
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Optical (pentaprism) None
Viewfinder coverage 95% -
Viewfinder magnification 0.64x -
Features
Min shutter speed 30 secs 30 secs
Max shutter speed 1/4000 secs 1/8000 secs
Continuous shutter speed 3.0 frames/s 5.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Built-in flash
Flash distance 13.00 m (at ISO 100) 4.90 m (at ISO 100)
Flash modes Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain, wireless Auto, redeye reduction, slow sync, trailing curtain sync
External flash
AEB
WB bracketing
Max flash sync 1/180 secs -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions - 1920 x 1080 (30,25, 24p), 1280 x 720 (30, 25, 24p), 640 x 480 (30, 25, 24p)
Maximum video resolution None 1920x1080
Video file format - MPEG-4, H.264
Mic input
Headphone input
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 800 grams (1.76 lbs) 203 grams (0.45 lbs)
Dimensions 142 x 101 x 70mm (5.6" x 4.0" x 2.8") 105 x 58 x 34mm (4.1" x 2.3" x 1.3")
DXO scores
DXO Overall rating 65 not tested
DXO Color Depth rating 22.9 not tested
DXO Dynamic range rating 11.1 not tested
DXO Low light rating 639 not tested
Other
Battery life - 250 photos
Battery format - Battery Pack
Battery ID D-LI50 D-LI68
Self timer Yes (2 or 10 sec) Yes (2 or 12 sec)
Time lapse feature
Type of storage SD/MMC/SDHC card SD/SDHC/SDXC card
Storage slots Single Single
Launch price $700 $250