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Pentax E85 vs Sony RX100

Portability
95
Imaging
35
Features
10
Overall
25
Pentax Optio E85 front
 
Sony Cyber-shot DSC-RX100 front
Portability
91
Imaging
50
Features
68
Overall
57

Pentax E85 vs Sony RX100 Key Specs

Pentax E85
(Full Review)
  • 12MP - 1/2.3" Sensor
  • 2.7" Fixed Display
  • ISO 80 - 3200
  • 640 x 480 video
  • 32-96mm (F2.9-5.2) lens
  • 145g - 93 x 58 x 24mm
  • Revealed September 2009
Sony RX100
(Full Review)
  • 20MP - 1" Sensor
  • 3" Fixed Screen
  • ISO 100 - 25600
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 28-100mm (F1.8-4.9) lens
  • 240g - 102 x 58 x 36mm
  • Revealed August 2012
  • Successor is Sony RX100 II
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Pentax E85 vs Sony RX100 Overview

Let's look a bit more closely at the Pentax E85 vs Sony RX100, former is a Small Sensor Compact while the latter is a Large Sensor Compact by manufacturers Pentax and Sony. There is a sizable difference between the resolutions of the E85 (12MP) and RX100 (20MP) and the E85 (1/2.3") and RX100 (1") use different sensor measurements.

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The E85 was revealed 3 years prior to the RX100 which is quite a significant difference as far as tech is concerned. Both the cameras come with different body type with the Pentax E85 being a Compact camera and the Sony RX100 being a Large Sensor Compact camera.

Before diving in to a in-depth comparison, below is a concise synopsis of how the E85 matches up versus the RX100 for portability, imaging, features and an overall score.

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Reasons to pick Pentax E85 over the Sony RX100

 E85 RX100 

Reasons to pick Sony RX100 over the Pentax E85

 RX100 E85 
RevealedAugust 2012September 2009More modern by 35 months
Manually focus More accurate focus
Screen dimension3"2.7"Bigger screen (+0.3")
Screen resolution1229k230kCrisper screen (+999k dot)

Common features in the Pentax E85 and Sony RX100

 E85 RX100 
Screen typeFixed Fixed Fixed screen
Selfie screen Missing selfie screen
Touch screen Missing Touch screen

Pentax E85 vs Sony RX100 Physical Comparison

When you are intending to carry around your camera frequently, you should think about its weight and proportions. The Pentax E85 offers outer dimensions of 93mm x 58mm x 24mm (3.7" x 2.3" x 0.9") with a weight of 145 grams (0.32 lbs) while the Sony RX100 has measurements of 102mm x 58mm x 36mm (4.0" x 2.3" x 1.4") and a weight of 240 grams (0.53 lbs).

Check the Pentax E85 vs Sony RX100 in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Do not forget, the weight of an ILC will differ dependant on the lens you use at that moment. Underneath is the front view measurements comparison of the E85 vs the RX100.

Pentax E85 vs Sony RX100 size comparison

Using size and weight, the portability rating of the E85 and RX100 is 95 and 91 respectively.

Pentax E85 vs Sony RX100 top view buttons comparison

Pentax E85 vs Sony RX100 Sensor Comparison

In many cases, its difficult to imagine the difference between sensor sizes merely by looking at technical specs. The picture below might provide you a far better sense of the sensor dimensions in the E85 and RX100.

As you can tell, both of these cameras posses different resolutions and different sensor sizes. The E85 having a tinier sensor is going to make shooting shallow DOF trickier and the Sony RX100 will give extra detail because of its extra 8MP. Higher resolution will also allow you to crop pictures somewhat more aggressively. The more aged E85 is going to be behind when it comes to sensor tech.

Pentax E85 vs Sony RX100 sensor size comparison

Pentax E85 vs Sony RX100 Screen and ViewFinder

Pentax E85 vs Sony RX100 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Pentax E85 Portrait photography factors
Sony RX100 Portrait photography factors
21
no manual focus
no manual control
external flash not possible
sensor resolution not great (12MP)
sensor size is tiny (1/2.3")
does not have RAW format
64
has manual focus
flash sync speed is above average (1/2,000 seconds)
resolution is good (20MP)
sensor size is decent (1")
supports face detect focus
exports RAW formats
cannot use external flash
Photography Glossary

Street Comparison

Pentax E85 as a Street photography camera
Sony RX100 as a Street photography camera
47
screen is fixed
does not have image stabilization
sensor size is tiny (1/2.3")
does not have RAW format
79
image stabilization (Optical)
sensor size is decent (1")
exports RAW formats
lighter than others (240g)
very good ISO range (25,600)
no moving screen
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Sports Comparison

Pentax E85 Sports photography factors
Sony RX100 Sports photography factors
17
max frames per second very slow (1.0 frames/s)
no shutter priority mode
does not have image stabilization
sensor resolution not great (12 megapixels)
sensor size is tiny (1/2.3")
does not have phase detect AF
65
image stabilization (Optical)
resolution is good (20MP)
sensor size is decent (1")
supports tracking focus
doesn't have phase detect auto focus
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Travel Comparison

Travel photography with Pentax E85
Travel photography with Sony RX100
51
built-in flash
no Timelapse recording
sensor resolution not great (12 megapixels)
screen isn't selfie friendly
wide angle not great (32mm)
slow max aperture (f2.9)
79
lighter than others (240 grams)
resolution is good (20 megapixels)
built-in flash
quite wide (28mm)
very good max aperture (f1.8)
doesn't have selfie friendly display
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Landscape Comparison

Pentax E85 as a Landscape photography camera
Sony RX100 as a Landscape photography camera
23
no manual focus
lens is fixed (fixed lens mount)
wide angle not great (32mm)
slow max aperture (f2.9)
tiny screen (2.7 inches)
no manual control
does not have image stabilization
sensor resolution not great (12 megapixels)
sensor size is tiny (1/2.3")
does not have RAW format
no Timelapse recording
74
has manual focus
quite wide (28mm)
very good max aperture (f1.8)
pretty good screen size (3")
image stabilization (Optical)
resolution is good (20MP)
sensor size is decent (1")
very good ISO range (25,600)
exports RAW formats
fixed lens (fixed lens mount)
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Vlogging Comparison

Pentax E85 Vlogging highlights
Sony RX100 Vlogging highlights
22
wide angle not great (32mm)
slow max aperture (f2.9)
screen isn't selfie friendly
does not have image stabilization
video resolution low (640 x 480 resolution)
no external microphone jack
38
quite wide (28mm)
very good max aperture (f1.8)
image stabilization (Optical)
supports face detect focus
good video quality (1920 x 1080 pixels)
lighter than others (240g)
doesn't have selfie friendly display
doesn't have mic port
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Pentax E85 vs Sony RX100 Specifications

Detailed spec comparison table for Pentax E85 and Sony RX100
 Pentax Optio E85Sony Cyber-shot DSC-RX100
General Information
Company Pentax Sony
Model type Pentax Optio E85 Sony Cyber-shot DSC-RX100
Category Small Sensor Compact Large Sensor Compact
Revealed 2009-09-17 2012-08-28
Body design Compact Large Sensor Compact
Sensor Information
Sensor type CCD CMOS
Sensor size 1/2.3" 1"
Sensor dimensions 6.17 x 4.55mm 13.2 x 8.8mm
Sensor area 28.1mm² 116.2mm²
Sensor resolution 12 megapixel 20 megapixel
Anti alias filter
Aspect ratio 4:3 and 16:9 1:1, 4:3, 3:2 and 16:9
Full resolution 4000 x 3000 5472 x 3648
Max native ISO 3200 25600
Lowest native ISO 80 100
RAW images
Autofocusing
Focus manually
AF touch
Continuous AF
Single AF
AF tracking
Selective AF
AF center weighted
AF multi area
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Total focus points - 25
Lens
Lens mount type fixed lens fixed lens
Lens zoom range 32-96mm (3.0x) 28-100mm (3.6x)
Largest aperture f/2.9-5.2 f/1.8-4.9
Macro focusing distance 10cm 5cm
Focal length multiplier 5.8 2.7
Screen
Display type Fixed Type Fixed Type
Display sizing 2.7" 3"
Resolution of display 230 thousand dot 1,229 thousand dot
Selfie friendly
Liveview
Touch functionality
Display technology - WhiteMagic TFT LCD
Viewfinder Information
Viewfinder None None
Features
Lowest shutter speed 2 secs 30 secs
Highest shutter speed 1/2000 secs 1/2000 secs
Continuous shooting speed 1.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation - Yes
Set WB
Image stabilization
Integrated flash
Flash distance 3.00 m -
Flash options - Auto, On, Off, Slow Sync
Hot shoe
Auto exposure bracketing
White balance bracketing
Highest flash sync - 1/2000 secs
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions 640 x 480 (30 fps), 320 x 240 (30 fps) 1920 x 1080 (60 fps), 1440 x 1080 (30 fps), 1280 x 720 (30 fps), 640 x 480 (30 fps)
Max video resolution 640x480 1920x1080
Video file format Motion JPEG MPEG-4, AVCHD
Mic jack
Headphone jack
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 seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 145g (0.32 pounds) 240g (0.53 pounds)
Dimensions 93 x 58 x 24mm (3.7" x 2.3" x 0.9") 102 x 58 x 36mm (4.0" x 2.3" x 1.4")
DXO scores
DXO All around rating not tested 66
DXO Color Depth rating not tested 22.6
DXO Dynamic range rating not tested 12.4
DXO Low light rating not tested 390
Other
Battery life - 330 pictures
Style of battery - Battery Pack
Battery ID D-LI95 NP-BX1
Self timer Yes (2 or 10 sec) Yes (2 or 10 sec, Portrait 1/2)
Time lapse recording With downloadable app
Type of storage SD/SDHC, Internal SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Storage slots 1 1
Cost at launch $0 $448