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Pentax K-7 vs Pentax W90

Portability
60
Imaging
54
Features
69
Overall
60
Pentax K-7 front
 
Pentax Optio W90 front
Portability
94
Imaging
35
Features
21
Overall
29

Pentax K-7 vs Pentax W90 Key Specs

Pentax K-7
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 2000 (Expand to 6400)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 750g - 131 x 97 x 73mm
  • Announced October 2009
  • Later Model is Pentax K-5
Pentax W90
(Full Review)
  • 12MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 80 - 6400
  • 1280 x 720 video
  • 28-140mm (F3.5-5.5) lens
  • 164g - 108 x 59 x 25mm
  • Released February 2010
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Pentax K-7 vs Pentax W90 Overview

Let's look a little more closely at the Pentax K-7 vs Pentax W90, one being a Advanced DSLR and the other is a Waterproof and both are designed by Pentax. There exists a huge gap between the resolutions of the K-7 (15MP) and W90 (12MP) and the K-7 (APS-C) and W90 (1/2.3") feature totally different sensor sizing.

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The K-7 was manufactured 4 months earlier than the W90 and they are both of a similar generation. Each of these cameras come with different body type with the Pentax K-7 being a Mid-size SLR camera and the Pentax W90 being a Compact camera.

Before delving straight into a in-depth comparison, below is a concise introduction of how the K-7 matches up against the W90 in regards to portability, imaging, features and an overall rating.

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Reasons to pick Pentax K-7 over the Pentax W90

 K-7 W90 
Display dimension3"2.7"Larger display (+0.3")
Display resolution921k230kCrisper display (+691k dot)

Reasons to pick Pentax W90 over the Pentax K-7

 W90 K-7 

Common features in the Pentax K-7 and Pentax W90

 K-7 W90 
ReleasedOctober 2009February 2010Similar generation
Focus manually More accurate focusing
Display typeFixed Fixed Fixed display
Selfie screen Missing selfie screen
Touch friendly display Missing Touch friendly display

Pentax K-7 vs Pentax W90 Physical Comparison

When you are intending to carry your camera, you will have to consider its weight and proportions. The Pentax K-7 enjoys 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) whilst the Pentax W90 has measurements of 108mm x 59mm x 25mm (4.3" x 2.3" x 1.0") with a weight of 164 grams (0.36 lbs).

See the Pentax K-7 vs Pentax W90 in the latest Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will change based on the lens you are working with during that time. Here is the front view physical size comparison of the K-7 against the W90.

Pentax K-7 vs Pentax W90 size comparison

Taking into consideration dimensions and weight, the portability rating of the K-7 and W90 is 60 and 94 respectively.

Pentax K-7 vs Pentax W90 top view buttons comparison

Pentax K-7 vs Pentax W90 Sensor Comparison

More often than not, it can be hard to visualise the gap between sensor sizing purely by checking a spec sheet. The graphic here should give you a much better sense of the sensor sizes in the K-7 and W90.

Clearly, each of these cameras posses different megapixel count and different sensor sizing. The K-7 due to its larger sensor will make shooting shallower depth of field simpler and the Pentax K-7 will resolve more detail due to its extra 3MP. Greater resolution can also make it easier to crop images somewhat more aggressively.

Pentax K-7 vs Pentax W90 sensor size comparison

Pentax K-7 vs Pentax W90 Screen and ViewFinder

Pentax K-7 vs Pentax W90 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-7 Portrait photography features
Pentax W90 Portrait photography features
72
focusing manually
MP count good (15MP)
sensor size is decent (APS-C)
offers face detection focusing
exports RAW formats
27
manual focus
manual exposure not possible
no external flash support
low resolution sensor (12 megapixels)
tiny sensor (1/2.3")
has no RAW support
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Street Comparison

Pentax K-7 as a Street photography camera
Pentax W90 as a Street photography camera
66
has image stabilization (Sensor based)
sensor size is decent (APS-C)
exports RAW formats
environment proof
screen is fixed
54
environment proofing
no articulating screen
lack of image stabilization
tiny sensor (1/2.3")
has no RAW support
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Sports Comparison

Pentax K-7 Sports photography features
Pentax W90 Sports photography features
69
maximum shutter speed is high (1/8,000s)
has image stabilization (Sensor based)
MP count good (15MP)
sensor size is decent (APS-C)
environment proof
supports phase detect AF
continuous shooting slow (5.0 frames/s)
24
environment proofing
very slow continuous shooting (1.0 frames per second)
no shutter priority mode
lack of image stabilization
low resolution sensor (12MP)
tiny sensor (1/2.3")
has no phase detect autofocus
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Travel Comparison

Pentax K-7 Travel photography advice
Pentax W90 Travel photography advice
64
environment proof
MP count good (15 megapixels)
built-in flash
doesn't posses selfie friendly display
64
environment proofing
built-in flash
reasonably wide (28mm)
low resolution sensor (12 megapixels)
doesn't posses selfie friendly screen
slow max aperture (f3.5)
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Landscape Comparison

Pentax K-7 Landscape photography advice
Pentax W90 Landscape photography advice
77
focusing manually
switch lenses (Pentax KAF2 mount)
good sized screen (3 inch)
has image stabilization (Sensor based)
MP count good (15MP)
sensor size is decent (APS-C)
exports RAW formats
environment proof
37
manual focus
reasonably wide (28mm)
environment proofing
fixed lens (fixed lens mount)
slow max aperture (f3.5)
screen is small (2.7")
manual exposure not possible
lack of image stabilization
low resolution sensor (12MP)
tiny sensor (1/2.3")
has no RAW support
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Vlogging Comparison

Pentax K-7 Vlogging information
Pentax W90 Vlogging information
25
has image stabilization (Sensor based)
offers face detection focusing
doesn't posses selfie friendly display
low quality video (1280 x 720 pixels)
no external microphone socket
25
reasonably wide (28mm)
slow max aperture (f3.5)
doesn't posses selfie friendly screen
lack of image stabilization
video res low (1280 x 720 pixels)
doesn't have external mic support
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Pentax K-7 vs Pentax W90 Specifications

Detailed spec comparison table for Pentax K-7 and Pentax W90
 Pentax K-7Pentax Optio W90
General Information
Make Pentax Pentax
Model type Pentax K-7 Pentax Optio W90
Category Advanced DSLR Waterproof
Announced 2009-10-02 2010-02-24
Physical type Mid-size SLR Compact
Sensor Information
Chip Prime II Prime
Sensor type CMOS CCD
Sensor size APS-C 1/2.3"
Sensor dimensions 23.4 x 15.6mm 6.17 x 4.55mm
Sensor area 365.0mm² 28.1mm²
Sensor resolution 15MP 12MP
Anti alias filter
Aspect ratio 3:2 4:3, 3:2 and 16:9
Maximum resolution 4672 x 3104 4000 x 3000
Maximum native ISO 2000 6400
Maximum boosted ISO 6400 -
Lowest native ISO 100 80
RAW data
Autofocusing
Manual focusing
Touch to focus
AF continuous
AF single
AF tracking
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detection focusing
Contract detection focusing
Phase detection focusing
Total focus points 11 9
Lens
Lens support Pentax KAF2 fixed lens
Lens zoom range - 28-140mm (5.0x)
Largest aperture - f/3.5-5.5
Macro focusing distance - 1cm
Amount of lenses 151 -
Focal length multiplier 1.5 5.8
Screen
Screen type Fixed Type Fixed Type
Screen diagonal 3 inches 2.7 inches
Screen resolution 921k dots 230k dots
Selfie friendly
Liveview
Touch friendly
Screen technology TFT color LCD with AR coating -
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 100 percent -
Viewfinder magnification 0.61x -
Features
Lowest shutter speed 30 seconds 4 seconds
Highest shutter speed 1/8000 seconds 1/1500 seconds
Continuous shooting rate 5.0fps 1.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes -
Change WB
Image stabilization
Inbuilt flash
Flash distance 13.00 m 3.90 m
Flash settings Auto, On, Off, Red-eye, Slow Sync, Rear Curtain, Wireless Auto, On, Off, Red-eye, Soft
External flash
AE bracketing
WB bracketing
Highest 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 1280 x 720 (30 fps), 1536 x 1024 (30 fps), 640 x 480 (30 fps), 320 x 240 (30 fps) 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Maximum video resolution 1280x720 1280x720
Video format Motion JPEG Motion JPEG
Mic support
Headphone support
Connectivity
Wireless None Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 750 grams (1.65 lb) 164 grams (0.36 lb)
Dimensions 131 x 97 x 73mm (5.2" x 3.8" x 2.9") 108 x 59 x 25mm (4.3" x 2.3" x 1.0")
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 images -
Style of battery Battery Pack -
Battery ID D-LI90 D-LI68
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC/MMC SD/SDHC card, Internal
Card slots One One
Launch price $599 $120