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Panasonic GX1 vs Pentax RZ18

Portability
87
Imaging
52
Features
54
Overall
52
Panasonic Lumix DMC-GX1 front
 
Pentax Optio RZ18 front
Portability
92
Imaging
39
Features
37
Overall
38

Panasonic GX1 vs Pentax RZ18 Key Specs

Panasonic GX1
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Fixed Display
  • ISO 160 - 12800
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 318g - 116 x 68 x 39mm
  • Launched February 2012
  • Updated by Panasonic GX7
Pentax RZ18
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Fixed Display
  • ISO 80 - 6400
  • Sensor-shift Image Stabilization
  • 1280 x 720 video
  • 25-450mm (F3.5-5.9) lens
  • 178g - 97 x 61 x 33mm
  • Launched September 2011
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Panasonic GX1 vs Pentax RZ18 Overview

Below, we are evaluating the Panasonic GX1 and Pentax RZ18, one is a Entry-Level Mirrorless and the other is a Small Sensor Superzoom by brands Panasonic and Pentax. The sensor resolution of the GX1 (16MP) and the RZ18 (16MP) is fairly close but the GX1 (Four Thirds) and RZ18 (1/2.3") come with totally different sensor measurements.

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The GX1 was launched 6 months after the RZ18 and they are of a similar generation. The two cameras come with different body type with the Panasonic GX1 being a Rangefinder-style mirrorless camera and the Pentax RZ18 being a Compact camera.

Before we go straight into a comprehensive comparison, below is a brief summation of how the GX1 grades against the RZ18 when considering portability, imaging, features and an overall score.

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Reasons to pick Panasonic GX1 over the Pentax RZ18

 GX1 RZ18 
Touch display Easily navigate

Reasons to pick Pentax RZ18 over the Panasonic GX1

 RZ18 GX1 

Common features in the Panasonic GX1 and Pentax RZ18

 GX1 RZ18 
LaunchedFebruary 2012September 2011Same generation
Manually focus Very precise focusing
Display typeFixed Fixed Fixed display
Display dimension3"3"Identical display measurements
Display resolution460k460kIdentical display resolution
Selfie screen No selfie screen

Panasonic GX1 vs Pentax RZ18 Physical Comparison

If you are aiming to carry around your camera often, you will need to think about its weight and measurements. The Panasonic GX1 features outer measurements of 116mm x 68mm x 39mm (4.6" x 2.7" x 1.5") and a weight of 318 grams (0.70 lbs) while the Pentax RZ18 has proportions of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") and a weight of 178 grams (0.39 lbs).

See the Panasonic GX1 and 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 vary dependant on the lens you are utilizing at that moment. Underneath is the front view measurements comparison of the GX1 versus the RZ18.

Panasonic GX1 vs Pentax RZ18 size comparison

Taking into account dimensions and weight, the portability score of the GX1 and RZ18 is 87 and 92 respectively.

Panasonic GX1 vs Pentax RZ18 top view buttons comparison

Panasonic GX1 vs Pentax RZ18 Sensor Comparison

More often than not, it's tough to visualise the gap in sensor sizes simply by researching technical specs. The picture below may provide you a more clear sense of the sensor measurements in the GX1 and RZ18.

As you can tell, both cameras posses the exact same megapixel count but not the same sensor sizes. The GX1 features the larger sensor which is going to make achieving shallow DOF less difficult.

Panasonic GX1 vs Pentax RZ18 sensor size comparison

Panasonic GX1 vs Pentax RZ18 Screen and ViewFinder

Panasonic GX1 vs Pentax RZ18 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Panasonic GX1 Portrait photography details
Pentax RZ18 Portrait photography details
71
has manual focus
megapixel count good (16MP)
sensor size is nice (Four Thirds)
offers face detect autofocus
delivers RAW files
36
manual focus
megapixel count good (16MP)
no manual exposure
no external flash support
small sensor (1/2.3")
does not have RAW format
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Street Comparison

Street photography with Panasonic GX1
Street photography with Pentax RZ18
70
sensor size is nice (Four Thirds)
delivers RAW files
features focus by touch
no articulating screen
lack of image stabilization
65
image stabilization (Sensor-shift)
weather proofing
lighter than competition (178g)
screen does not articulate
small sensor (1/2.3")
does not have RAW format
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Sports Comparison

Panasonic GX1 Sports photography factors
Pentax RZ18 Sports photography factors
47
megapixel count good (16 megapixels)
sensor size is nice (Four Thirds)
offers tracking focus
slow frames per second (4.0 fps)
lack of image stabilization
bad battery life (300 per charge)
has no phase detect autofocus
47
incredible zoom range (25-450mm 18.0 x zoom)
image stabilization (Sensor-shift)
megapixel count good (16MP)
features tracking focus
weather proofing
continuous shooting slow (1.0 frames/s)
no shutter priority mode
small sensor (1/2.3")
does not have phase detect auto focus
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Travel Comparison

Panasonic GX1 Travel photography factors
Pentax RZ18 Travel photography factors
65
features focus by touch
megapixel count good (16 megapixels)
built-in flash
missing Time Lapse function
bad battery life (300 shots)
display isn't selfie friendly
71
lighter than competition (178 grams)
weather proofing
megapixel count good (16 megapixels)
built-in flash
relatively wide (25mm)
great zoom (450mm)
lack of Timelapse mode
doesn't have a selfie friendly display
slow maximum aperture (f3.5)
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Landscape Comparison

Panasonic GX1 Landscape photography features
Pentax RZ18 Landscape photography features
62
has manual focus
interchangeable lenses (Micro Four Thirds mount)
pretty good screen size (3 inch)
megapixel count good (16 megapixels)
sensor size is nice (Four Thirds)
delivers RAW files
lack of image stabilization
bad battery life (300 CIPA)
missing Time Lapse function
49
manual focus
relatively wide (25mm)
nice screen size (3 inches)
image stabilization (Sensor-shift)
megapixel count good (16 megapixels)
weather proofing
fixed lens (fixed lens mount)
slow maximum aperture (f3.5)
no manual exposure
small sensor (1/2.3")
does not have RAW format
lack of Timelapse mode
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Vlogging Comparison

Panasonic GX1 Vlogging info
Pentax RZ18 Vlogging info
32
touchscreen
offers face detect autofocus
good video quality (1920 x 1080 pixels)
display isn't selfie friendly
lack of image stabilization
missing mic jack
30
relatively wide (25mm)
image stabilization (Sensor-shift)
lighter than competition (178 grams)
slow maximum aperture (f3.5)
doesn't have a selfie friendly display
low video resolution (1280 x 720 pixels)
lack of microphone support
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Panasonic GX1 vs Pentax RZ18 Specifications

Detailed spec comparison table for Panasonic GX1 and Pentax RZ18
 Panasonic Lumix DMC-GX1Pentax Optio RZ18
General Information
Brand Name Panasonic Pentax
Model Panasonic Lumix DMC-GX1 Pentax Optio RZ18
Category Entry-Level Mirrorless Small Sensor Superzoom
Launched 2012-02-14 2011-09-12
Physical type Rangefinder-style mirrorless Compact
Sensor Information
Processor Chip Venus Engine FHD -
Sensor type CMOS CCD
Sensor size Four Thirds 1/2.3"
Sensor measurements 17.3 x 13mm 6.08 x 4.56mm
Sensor surface area 224.9mm² 27.7mm²
Sensor resolution 16 megapixel 16 megapixel
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 1:1, 4:3 and 16:9
Highest resolution 4592 x 3448 4608 x 3456
Highest native ISO 12800 6400
Min native ISO 160 80
RAW photos
Autofocusing
Focus manually
Touch focus
Continuous autofocus
Autofocus single
Tracking autofocus
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detect focus
Contract detect focus
Phase detect focus
Number of focus points 23 9
Lens
Lens mounting type Micro Four Thirds fixed lens
Lens focal range - 25-450mm (18.0x)
Highest aperture - f/3.5-5.9
Macro focus distance - 4cm
Total lenses 107 -
Crop factor 2.1 5.9
Screen
Type of display Fixed Type Fixed Type
Display sizing 3 inches 3 inches
Display resolution 460 thousand dots 460 thousand dots
Selfie friendly
Liveview
Touch capability
Display tech TFT Color LCD with wide-viewing angle TFT color LCD with Anti-reflective coating
Viewfinder Information
Viewfinder Electronic (optional) None
Features
Slowest shutter speed 60 seconds 4 seconds
Maximum shutter speed 1/4000 seconds 1/2000 seconds
Continuous shooting rate 4.0 frames per second 1.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Custom white balance
Image stabilization
Integrated flash
Flash range 7.60 m 2.80 m
Flash options Auto, On, Off, Red-Eye, Slow Sync Auto, On, Off, Red-eye, Soft
Hot shoe
AEB
WB bracketing
Maximum flash synchronize 1/160 seconds -
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions 1920 x 1080 (60 fps) 1280 x 720 (60, 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)
Highest video resolution 1920x1080 1280x720
Video format MPEG-4, AVCHD Motion JPEG
Microphone 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
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 318 gr (0.70 pounds) 178 gr (0.39 pounds)
Dimensions 116 x 68 x 39mm (4.6" x 2.7" x 1.5") 97 x 61 x 33mm (3.8" x 2.4" x 1.3")
DXO scores
DXO All around score 55 not tested
DXO Color Depth score 20.8 not tested
DXO Dynamic range score 10.6 not tested
DXO Low light score 703 not tested
Other
Battery life 300 photos -
Battery style Battery Pack -
Battery model - D-LI92
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec)
Time lapse recording
Storage type SD/SDHC/SDXC SD/SDHC/SDXC, Internal
Card slots One One
Cost at launch $228 $210