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Pentax K-7 vs Sigma SD9

Portability
60
Imaging
55
Features
69
Overall
60
Pentax K-7 front
 
Sigma SD9 front
Portability
54
Imaging
39
Features
27
Overall
34

Pentax K-7 vs Sigma SD9 Key Specs

Pentax K-7
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 2000 (Increase to 6400)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 750g - 131 x 97 x 73mm
  • Launched October 2009
  • New Model is Pentax K-5
Sigma SD9
(Full Review)
  • 3MP - APS-C Sensor
  • 1.8" Fixed Screen
  • ISO 100 - 400
  • 1/6000s Max Shutter
  • No Video
  • Sigma SA Mount
  • 950g - 152 x 120 x 79mm
  • Announced November 2002
  • Later Model is Sigma SD10
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Pentax K-7 vs Sigma SD9 Overview

Below, we will be matching up the Pentax K-7 versus Sigma SD9, both Advanced DSLR cameras by manufacturers Pentax and Sigma. There is a sizeable difference among the image resolutions of the K-7 (15MP) and SD9 (3MP) but they possess the exact same sensor sizes (APS-C).

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The K-7 was introduced 6 years after the SD9 which is a fairly large gap as far as camera tech is concerned. Each of the cameras come with the identical body type (Mid-size SLR).

Before we go straight into a in-depth comparison, below is a concise introduction of how the K-7 matches up against the SD9 when it comes to portability, imaging, features and an overall mark.

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Reasons to pick Pentax K-7 over the Sigma SD9

 K-7 SD9 
AnnouncedOctober 2009November 2002Newer by 84 months
Screen dimension3"1.8"Bigger screen (+1.2")
Screen resolution921k130kClearer screen (+791k dot)

Reasons to pick Sigma SD9 over the Pentax K-7

 SD9 K-7 

Common features in the Pentax K-7 and Sigma SD9

 K-7 SD9 
Manual focus More exact focus
Screen typeFixed Fixed Fixed screen
Selfie screen Neither has selfie screen
Touch screen Lacking Touch screen

Pentax K-7 vs Sigma SD9 Physical Comparison

In case you're intending to travel with your camera frequently, you need to factor in its weight and size. The Pentax K-7 has physical dimensions of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") and a weight of 750 grams (1.65 lbs) and the Sigma SD9 has specifications of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") with a weight of 950 grams (2.09 lbs).

Check out the Pentax K-7 versus Sigma SD9 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have attached at the time. Underneath is the front view over all size comparison of the K-7 compared to the SD9.

Pentax K-7 vs Sigma SD9 size comparison

Considering size and weight, the portability rating of the K-7 and SD9 is 60 and 54 respectively.

Pentax K-7 vs Sigma SD9 top view buttons comparison

Pentax K-7 vs Sigma SD9 Sensor Comparison

Usually, its tough to visualize the contrast in sensor dimensions only by going through specifications. The image below should offer you a clearer sense of the sensor dimensions in the K-7 and SD9.

Plainly, both of those cameras posses the exact same sensor measurements albeit different MP. You should count on the Pentax K-7 to provide greater detail using its extra 12MP. Higher resolution will also enable you to crop photographs somewhat more aggressively. The younger K-7 provides an advantage in sensor technology.

Pentax K-7 vs Sigma SD9 sensor size comparison

Pentax K-7 vs Sigma SD9 Screen and ViewFinder

Pentax K-7 vs Sigma SD9 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-7 Portrait photography highlights
Sigma SD9 Portrait photography highlights
73
focusing manually
good megapixels (15 megapixels)
good sensor size (APS-C)
features face detection autofocus
saves RAW files
47
focusing manually
decent sensor size (APS-C)
exports RAW formats
doesn't have liveview
resolution not great (3MP)
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Street Comparison

Street photography with Pentax K-7
Street photography with Sigma SD9
66
built in image stabilization (Sensor based)
good sensor size (APS-C)
saves RAW files
environment proofing
no moving screen
43
decent sensor size (APS-C)
exports RAW formats
no articulating screen
no image stabilization
more heavy than average in class (950g)
low max ISO (400)
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Sports Comparison

Pentax K-7 as a Sports photography camera
Sigma SD9 as a Sports photography camera
70
max shutter speed is good (1/8,000 seconds)
built in image stabilization (Sensor based)
good megapixels (15 megapixels)
good sensor size (APS-C)
environment proofing
sensor has phase detect autofocus
very slow continuous shooting (5.0 frames/s)
36
great max shutter speed (1/6,000s)
decent sensor size (APS-C)
doesn't have liveview
no image stabilization
resolution not great (3MP)
lack of phase detect AF
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Travel Comparison

Pentax K-7 Travel photography factors
Sigma SD9 Travel photography factors
65
environment proofing
good megapixels (15 megapixels)
flash built-in
display isn't selfie friendly
29
does not have Timelapse recording
more heavy than average in class (950 grams)
resolution not great (3MP)
doesn't posses selfie friendly display
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Landscape Comparison

Pentax K-7 Landscape photography advice
Sigma SD9 Landscape photography advice
78
focusing manually
switch lenses (Pentax KAF2 mount)
screen size is good (3 inch)
built in image stabilization (Sensor based)
good megapixels (15 megapixels)
good sensor size (APS-C)
saves RAW files
environment proofing
41
focusing manually
switch lenses (Sigma SA mount)
decent sensor size (APS-C)
exports RAW formats
screen is somewhat small (1.8 inches)
doesn't have liveview
no image stabilization
resolution not great (3MP)
low max ISO (400)
does not have Timelapse recording
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Vlogging Comparison

Pentax K-7 as a Vlogging camera
Sigma SD9 as a Vlogging camera
25
built in image stabilization (Sensor based)
features face detection autofocus
display isn't selfie friendly
video res low (1280 x 720 resolution)
no external microphone support
9
no video shooting
Photography Glossary

Pentax K-7 vs Sigma SD9 Specifications

Detailed spec comparison table for Pentax K-7 and Sigma SD9
 Pentax K-7Sigma SD9
General Information
Company Pentax Sigma
Model type Pentax K-7 Sigma SD9
Class Advanced DSLR Advanced DSLR
Launched 2009-10-02 2002-11-26
Physical type Mid-size SLR Mid-size SLR
Sensor Information
Chip Prime II -
Sensor type CMOS CMOS (Foveon X3)
Sensor size APS-C APS-C
Sensor measurements 23.4 x 15.6mm 20.7 x 13.8mm
Sensor area 365.0mm² 285.7mm²
Sensor resolution 15MP 3MP
Anti alias filter
Aspect ratio 3:2 3:2
Full resolution 4672 x 3104 2268 x 1512
Max native ISO 2000 400
Max boosted ISO 6400 -
Min native ISO 100 100
RAW files
Autofocusing
Focus manually
Touch to focus
Continuous AF
AF single
AF tracking
Selective AF
Center weighted AF
AF multi area
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Total focus points 11 -
Lens
Lens support Pentax KAF2 Sigma SA
Amount of lenses 151 76
Focal length multiplier 1.5 1.7
Screen
Display type Fixed Type Fixed Type
Display size 3" 1.8"
Display resolution 921k dots 130k dots
Selfie friendly
Liveview
Touch friendly
Display tech TFT color LCD with AR coating -
Viewfinder Information
Viewfinder type Optical (pentaprism) Optical (pentaprism)
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification 0.61x 0.77x
Features
Lowest shutter speed 30 secs 30 secs
Highest shutter speed 1/8000 secs 1/6000 secs
Continuous shooting rate 5.0 frames/s -
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change WB
Image stabilization
Built-in flash
Flash distance 13.00 m no built-in flash
Flash settings Auto, On, Off, Red-eye, Slow Sync, Rear Curtain, Wireless -
External flash
AEB
White balance bracketing
Highest flash synchronize 1/180 secs 1/180 secs
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1280 x 720 (30 fps), 1536 x 1024 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps) -
Max video resolution 1280x720 None
Video data format Motion JPEG -
Microphone port
Headphone port
Connectivity
Wireless None None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 1.0 (1.5 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 750 gr (1.65 lb) 950 gr (2.09 lb)
Dimensions 131 x 97 x 73mm (5.2" x 3.8" x 2.9") 152 x 120 x 79mm (6.0" x 4.7" x 3.1")
DXO scores
DXO All around rating 61 not tested
DXO Color Depth rating 22.6 not tested
DXO Dynamic range rating 10.6 not tested
DXO Low light rating 536 not tested
Other
Battery life 980 shots -
Battery type Battery Pack -
Battery ID D-LI90 -
Self timer Yes (2 or 10 sec) Yes (10 sec)
Time lapse recording
Type of storage SD/SDHC/MMC Compact Flash Type I or II
Card slots Single Single
Retail pricing $599 $3,001