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Pentax K-7 vs Pentax RZ18

Portability
60
Imaging
54
Features
69
Overall
60
Pentax K-7 front
 
Pentax Optio RZ18 front
Portability
92
Imaging
39
Features
37
Overall
38

Pentax K-7 vs Pentax RZ18 Key Specs

Pentax K-7
(Full Review)
  • 15MP - APS-C Sensor
  • 3" Fixed Display
  • ISO 100 - 2000 (Push to 6400)
  • Sensor based Image Stabilization
  • 1/8000s Maximum Shutter
  • 1280 x 720 video
  • Pentax KAF2 Mount
  • 750g - 131 x 97 x 73mm
  • Revealed October 2009
  • Replacement is Pentax K-5
Pentax RZ18
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Screen
  • ISO 80 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 25-450mm (F3.5-5.9) lens
  • 178g - 97 x 61 x 33mm
  • Announced September 2011
Photography Glossary

Pentax K-7 vs Pentax RZ18 Overview

Lets look a bit more in depth at the Pentax K-7 vs Pentax RZ18, one being a Advanced DSLR and the latter is a Small Sensor Superzoom and both of them are created by Pentax. The image resolution of the K-7 (15MP) and the RZ18 (16MP) is pretty comparable but the K-7 (APS-C) and RZ18 (1/2.3") provide totally different sensor size.

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The K-7 was brought out 23 months before the RZ18 which makes them a generation apart from each other. Both cameras have different body design with the Pentax K-7 being a Mid-size SLR camera and the Pentax RZ18 being a Compact camera.

Before getting into a more detailed comparison, here is a simple introduction of how the K-7 matches up versus the RZ18 in terms of portability, imaging, features and an overall grade.

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Reasons to pick Pentax K-7 over the Pentax RZ18

 K-7 RZ18 
Screen resolution921k460kCrisper screen (+461k dot)

Reasons to pick Pentax RZ18 over the Pentax K-7

 RZ18 K-7 
AnnouncedSeptember 2011October 2009More recent by 23 months

Common features in the Pentax K-7 and Pentax RZ18

 K-7 RZ18 
Manual focus Very precise focusing
Screen typeFixed Fixed Fixed screen
Screen dimensions3"3"Equal screen size
Selfie screen Neither features selfie screen
Touch friendly screen Neither features Touch friendly screen

Pentax K-7 vs Pentax RZ18 Physical Comparison

When you are aiming to lug around your camera regularly, you're going to have to take into account 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") with a weight of 750 grams (1.65 lbs) while the Pentax RZ18 has measurements of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") along with a weight of 178 grams (0.39 lbs).

Examine the Pentax K-7 vs Pentax RZ18 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will differ depending on the lens you are employing at that time. Here is a front view proportions comparison of the K-7 compared to the RZ18.

Pentax K-7 vs Pentax RZ18 size comparison

Looking at size and weight, the portability grade of the K-7 and RZ18 is 60 and 92 respectively.

Pentax K-7 vs Pentax RZ18 top view buttons comparison

Pentax K-7 vs Pentax RZ18 Sensor Comparison

Oftentimes, it's tough to envision the difference in sensor measurements simply by checking out specs. The visual underneath will help offer you a more clear sense of the sensor dimensions in the K-7 and RZ18.

As you can plainly see, both of those cameras have different resolutions and different sensor measurements. The K-7 featuring a bigger sensor will make getting shallower depth of field less difficult and the Pentax RZ18 will show greater detail having its extra 1 Megapixels. Higher resolution will also enable you to crop shots a bit more aggressively. The older K-7 will be behind when it comes to sensor innovation.

Pentax K-7 vs Pentax RZ18 sensor size comparison

Pentax K-7 vs Pentax RZ18 Screen and ViewFinder

Pentax K-7 vs Pentax RZ18 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax K-7 as a Portrait photography camera
Pentax RZ18 as a Portrait photography camera
72
you can focus manually
MP count good (15MP)
decent sensor size (APS-C)
supports face detect focusing
saves RAW formats
36
you can focus manually
good megapixels (16MP)
no manual control
external flash not possible
sensor is tiny (1/2.3")
no RAW support
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Street Comparison

Pentax K-7 as a Street photography camera
Pentax RZ18 as a Street photography camera
66
built in image stabilization (Sensor based)
decent sensor size (APS-C)
saves RAW formats
environment sealing
no moving screen
65
image stabilization (Sensor-shift)
weather proof
lighter than average in class (178g)
screen does not articulate
sensor is tiny (1/2.3")
no RAW support
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Sports Comparison

Pentax K-7 Sports photography details
Pentax RZ18 Sports photography details
69
high shutter speed (1/8,000 seconds)
built in image stabilization (Sensor based)
MP count good (15MP)
decent sensor size (APS-C)
environment sealing
has phase detect AF
very slow continuous shooting (5.0 fps)
47
amazing zoom range (25-450mm 18.0 x zoom)
image stabilization (Sensor-shift)
good megapixels (16MP)
features tracking autofocus
weather proof
slow fps (1.0 frames per second)
no shutter priority
sensor is tiny (1/2.3")
no phase detect AF
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Travel Comparison

Pentax K-7 Travel photography highlights
Pentax RZ18 Travel photography highlights
64
environment sealing
MP count good (15MP)
flash built-in
doesn't offer selfie friendly display
71
lighter than average in class (178 grams)
weather proof
good megapixels (16 megapixels)
flash built-in
quite wide (25mm)
long zoom (450mm)
doesn't have Time Lapse function
display isn't selfie friendly
sluggish maximum aperture (f3.5)
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Landscape Comparison

Pentax K-7 Landscape photography details
Pentax RZ18 Landscape photography details
77
you can focus manually
interchangeable lenses (Pentax KAF2 mount)
nice screen size (3 inch)
built in image stabilization (Sensor based)
MP count good (15 megapixels)
decent sensor size (APS-C)
saves RAW formats
environment sealing
49
you can focus manually
quite wide (25mm)
screen size is good (3 inches)
image stabilization (Sensor-shift)
good megapixels (16 megapixels)
weather proof
fixed lens (fixed lens mount)
sluggish maximum aperture (f3.5)
no manual control
sensor is tiny (1/2.3")
no RAW support
doesn't have Time Lapse function
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Vlogging Comparison

Vlogging with Pentax K-7
Vlogging with Pentax RZ18
25
built in image stabilization (Sensor based)
supports face detect focusing
doesn't offer selfie friendly display
low video resolution (1280 x 720 pixels)
no mic socket
30
quite wide (25mm)
image stabilization (Sensor-shift)
lighter than average in class (178g)
sluggish maximum aperture (f3.5)
display isn't selfie friendly
video res low (1280 x 720 pxls)
doesn't have external mic socket
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Pentax K-7 vs Pentax RZ18 Specifications

Detailed spec comparison table for Pentax K-7 and Pentax RZ18
 Pentax K-7Pentax Optio RZ18
General Information
Make Pentax Pentax
Model Pentax K-7 Pentax Optio RZ18
Type Advanced DSLR Small Sensor Superzoom
Revealed 2009-10-02 2011-09-12
Physical type Mid-size SLR Compact
Sensor Information
Powered by Prime II -
Sensor type CMOS CCD
Sensor size APS-C 1/2.3"
Sensor dimensions 23.4 x 15.6mm 6.08 x 4.56mm
Sensor surface area 365.0mm² 27.7mm²
Sensor resolution 15MP 16MP
Anti aliasing filter
Aspect ratio 3:2 1:1, 4:3 and 16:9
Maximum resolution 4672 x 3104 4608 x 3456
Maximum native ISO 2000 6400
Maximum boosted ISO 6400 -
Lowest native ISO 100 80
RAW format
Autofocusing
Focus manually
Touch to focus
Autofocus continuous
Single autofocus
Tracking autofocus
Autofocus selectice
Autofocus center weighted
Multi area autofocus
Live view autofocus
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Number of focus points 11 9
Lens
Lens mount Pentax KAF2 fixed lens
Lens focal range - 25-450mm (18.0x)
Maximal aperture - f/3.5-5.9
Macro focus distance - 4cm
Number of lenses 151 -
Crop factor 1.5 5.9
Screen
Display type Fixed Type Fixed Type
Display sizing 3 inch 3 inch
Display resolution 921 thousand dots 460 thousand dots
Selfie friendly
Liveview
Touch function
Display technology TFT color LCD with AR coating TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder type Optical (pentaprism) None
Viewfinder coverage 100% -
Viewfinder magnification 0.61x -
Features
Slowest shutter speed 30s 4s
Maximum shutter speed 1/8000s 1/2000s
Continuous shooting rate 5.0 frames per second 1.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Custom white balance
Image stabilization
Built-in flash
Flash range 13.00 m 2.80 m
Flash modes Auto, On, Off, Red-eye, Slow Sync, Rear Curtain, Wireless Auto, On, Off, Red-eye, Soft
External flash
AE bracketing
WB bracketing
Maximum flash synchronize 1/180s -
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
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 data format Motion JPEG Motion JPEG
Mic port
Headphone port
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
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 750g (1.65 pounds) 178g (0.39 pounds)
Physical dimensions 131 x 97 x 73mm (5.2" x 3.8" x 2.9") 97 x 61 x 33mm (3.8" x 2.4" x 1.3")
DXO scores
DXO All around score 61 not tested
DXO Color Depth score 22.6 not tested
DXO Dynamic range score 10.6 not tested
DXO Low light score 536 not tested
Other
Battery life 980 pictures -
Battery type Battery Pack -
Battery model D-LI90 D-LI92
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse shooting
Type of storage SD/SDHC/MMC SD/SDHC/SDXC, Internal
Card slots One One
Price at launch $599 $210