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Panasonic GH2 vs Pentax RZ18

Portability
70
Imaging
51
Features
65
Overall
56
Panasonic Lumix DMC-GH2 front
 
Pentax Optio RZ18 front
Portability
92
Imaging
39
Features
37
Overall
38

Panasonic GH2 vs Pentax RZ18 Key Specs

Panasonic GH2
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Fully Articulated Screen
  • ISO 160 - 12800
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 442g - 124 x 90 x 76mm
  • Announced March 2011
  • Replaced the Panasonic GH1
  • Later Model is Panasonic GH3
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
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Panasonic GH2 vs Pentax RZ18 Overview

Let's look a bit more closely at the Panasonic GH2 vs Pentax RZ18, former being a Advanced Mirrorless while the latter is a Small Sensor Superzoom by manufacturers Panasonic and Pentax. The resolution of the GH2 (16MP) and the RZ18 (16MP) is pretty well matched but the GH2 (Four Thirds) and RZ18 (1/2.3") boast different sensor measurements.

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The GH2 was introduced 5 months prior to the RZ18 and they are both of a similar age. Both cameras have different body design with the Panasonic GH2 being a SLR-style mirrorless camera and the Pentax RZ18 being a Compact camera.

Before delving into a complete comparison, here is a concise synopsis of how the GH2 scores versus the RZ18 with regards to portability, imaging, features and an overall rating.

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Reasons to pick Panasonic GH2 over the Pentax RZ18

 GH2 RZ18 
Screen typeFully ArticulatedFixed Fully Articulating screen
Selfie screen Take selfies
Touch screen Quickly navigate

Reasons to pick Pentax RZ18 over the Panasonic GH2

 RZ18 GH2 

Common features in the Panasonic GH2 and Pentax RZ18

 GH2 RZ18 
AnnouncedMarch 2011September 2011Similar age
Focus manually Very exact focus
Screen dimensions3"3"Equal screen measurements
Screen resolution460k460kThe same screen resolution

Panasonic GH2 vs Pentax RZ18 Physical Comparison

In case you're planning to carry your camera often, you will need to think about its weight and measurements. The Panasonic GH2 features external measurements of 124mm x 90mm x 76mm (4.9" x 3.5" x 3.0") with a weight of 442 grams (0.97 lbs) while the Pentax RZ18 has proportions of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") with a weight of 178 grams (0.39 lbs).

Compare the Panasonic GH2 vs Pentax RZ18 in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember that, the weight of an ILC will vary depending on the lens you select during that time. Below is a front view proportions comparison of the GH2 versus the RZ18.

Panasonic GH2 vs Pentax RZ18 size comparison

Looking at size and weight, the portability score of the GH2 and RZ18 is 70 and 92 respectively.

Panasonic GH2 vs Pentax RZ18 top view buttons comparison

Panasonic GH2 vs Pentax RZ18 Sensor Comparison

Usually, its hard to visualize the contrast between sensor sizing merely by checking technical specs. The graphic underneath might give you a much better sense of the sensor measurements in the GH2 and RZ18.

As you can tell, both the cameras have the same MP albeit different sensor sizing. The GH2 has got the bigger sensor which will make achieving shallower depth of field simpler.

Panasonic GH2 vs Pentax RZ18 sensor size comparison

Panasonic GH2 vs Pentax RZ18 Screen and ViewFinder

Panasonic GH2 vs Pentax RZ18 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Panasonic GH2 Portrait photography advice
Pentax RZ18 Portrait photography advice
70
you can focus manually
MP count good (16MP)
decent sensor size (Four Thirds)
supports face detect autofocus
supports RAW formats
36
focusing manually
decent megapixels (16MP)
manual mode not possible
cannot use external flash
very small sensor (1/2.3")
lacks RAW format
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Street Comparison

Panasonic GH2 Street photography factors
Pentax RZ18 Street photography factors
68
screen can move to multiple angles
decent sensor size (Four Thirds)
supports RAW formats
no image stabilization
65
built in image stabilization (Sensor-shift)
weather proof
lighter than competition (178 grams)
fixed screen
very small sensor (1/2.3")
lacks RAW format
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Sports Comparison

Panasonic GH2 Sports photography details
Pentax RZ18 Sports photography details
46
MP count good (16MP)
decent sensor size (Four Thirds)
supports tracking focus
slow continuous shooting (3.0 frames/s)
no image stabilization
not so great battery pack (330 per charge)
lack of phase detect autofocus
47
excellent zoom range (25-450mm 18.0 x zoom)
built in image stabilization (Sensor-shift)
decent megapixels (16MP)
supports tracking autofocus
weather proof
very slow continuous shooting (1.0 frames per second)
no shutter priority mode
very small sensor (1/2.3")
lacks phase detect auto focus
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Travel Comparison

Panasonic GH2 Travel photography details
Pentax RZ18 Travel photography details
62
MP count good (16MP)
flash built-in
screen is selfie friendly
missing Timelapse mode
not so great battery pack (330 per charge)
71
lighter than competition (178g)
weather proof
decent megapixels (16MP)
built-in flash
reasonably wide (25mm)
long reach (450mm)
lack of Time Lapse recording
screen is not selfie friendly
slow max aperture (f3.5)
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Landscape Comparison

Panasonic GH2 Landscape photography details
Pentax RZ18 Landscape photography details
60
you can focus manually
switch lenses (Micro Four Thirds mount)
good sized screen (3")
MP count good (16 megapixels)
decent sensor size (Four Thirds)
supports RAW formats
no image stabilization
not so great battery pack (330 CIPA)
missing Timelapse mode
49
focusing manually
reasonably wide (25mm)
screen size is decent (3 inches)
built in image stabilization (Sensor-shift)
decent megapixels (16MP)
weather proof
lens is fixed (fixed lens mount)
slow max aperture (f3.5)
manual mode not possible
very small sensor (1/2.3")
lacks RAW format
lack of Time Lapse recording
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Vlogging Comparison

Panasonic GH2 Vlogging factors
Pentax RZ18 Vlogging factors
71
screen is selfie friendly
touchscreen capability
supports face detect autofocus
high quality video (1920 x 1080 pxls)
does have microphone support
no image stabilization
30
reasonably wide (25mm)
built in image stabilization (Sensor-shift)
lighter than competition (178 grams)
slow max aperture (f3.5)
screen is not selfie friendly
video resolution low (1280 x 720 pixels)
lack of external mic socket
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Panasonic GH2 vs Pentax RZ18 Specifications

Detailed spec comparison table for Panasonic GH2 and Pentax RZ18
 Panasonic Lumix DMC-GH2Pentax Optio RZ18
General Information
Make Panasonic Pentax
Model type Panasonic Lumix DMC-GH2 Pentax Optio RZ18
Category Advanced Mirrorless Small Sensor Superzoom
Announced 2011-03-23 2011-09-12
Physical type SLR-style mirrorless Compact
Sensor Information
Powered by Venus Engine FHD -
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor dimensions 17.3 x 13mm 6.08 x 4.56mm
Sensor surface area 224.9mm² 27.7mm²
Sensor resolution 16MP 16MP
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3 and 16:9
Max resolution 4608 x 3456 4608 x 3456
Max native ISO 12800 6400
Min native ISO 160 80
RAW photos
Autofocusing
Manual focusing
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
Total focus points 23 9
Lens
Lens support Micro Four Thirds fixed lens
Lens zoom range - 25-450mm (18.0x)
Largest aperture - f/3.5-5.9
Macro focusing range - 4cm
Number of lenses 107 -
Crop factor 2.1 5.9
Screen
Type of screen Fully Articulated Fixed Type
Screen diagonal 3" 3"
Resolution of screen 460 thousand dots 460 thousand dots
Selfie friendly
Liveview
Touch friendly
Screen technology TFT Color LCD with wide-viewing angle TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder Electronic None
Viewfinder coverage 100% -
Viewfinder magnification 0.71x -
Features
Minimum shutter speed 60 seconds 4 seconds
Fastest shutter speed 1/4000 seconds 1/2000 seconds
Continuous shutter rate 3.0fps 1.0fps
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes -
Custom white balance
Image stabilization
Integrated flash
Flash distance 15.60 m 2.80 m
Flash options Auto, On, Off, Red-Eye, Slow Sync Auto, On, Off, Red-eye, Soft
Hot shoe
AE bracketing
White balance bracketing
Fastest flash synchronize 1/160 seconds -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 1920 x 1080 (24, 30, 60fps) 1280 x 720 (60, 30 fps), 848 x 480 (30 fps), 640 x 480 (30fps), 320 x 240 (30fps) 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 1920x1080 1280x720
Video data format AVCHD, 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 proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 442g (0.97 pounds) 178g (0.39 pounds)
Physical dimensions 124 x 90 x 76mm (4.9" x 3.5" x 3.0") 97 x 61 x 33mm (3.8" x 2.4" x 1.3")
DXO scores
DXO Overall rating 60 not tested
DXO Color Depth rating 21.2 not tested
DXO Dynamic range rating 11.3 not tested
DXO Low light rating 655 not tested
Other
Battery life 330 shots -
Battery type Battery Pack -
Battery ID - D-LI92
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse shooting
Storage type SD/SDHC/SDXC SD/SDHC/SDXC, Internal
Card slots One One
Pricing at release $1,000 $210