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Sony A7R III vs Olympus E-P1 Comparison

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Camera to replace
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Sony A7R III

42 MP | Full frame (35.9 x 24 mm) BSI-CMOS Sensor

Sony A7R III
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Olympus E-P1

12 MP | Four Thirds (17.3 x 13 mm) CMOS Sensor

Olympus E-P1
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Sony A7R III vs Olympus E-P1 Comparison Overview

Here we are comparing A7R III and E-P1, two Mirrorless cameras from Sony and Olympus. Sony Alpha A7R III is a Pro Mirrorless class camera and Olympus PEN E-P1 is a Entry-Level Mirrorless class camera.

Sony A7R III was introduced to market in October 2017 and Olympus E-P1 was launched in July 2009. As you can see, E-P1 is 8 years older than A7R III. Let's see if this age difference between two cameras makes a big difference.

Here is a brief look at the main features of Sony A7R III and Olympus E-P1 before getting into our more detailed comparison.

Sony A7R III Key Specs

  • Announcement Date: 2017-10-25
  • 42MP - Full frame BSI-CMOS Sensor
  • No Anti-aliasing (AA) filter
  • ISO 100 - 32000 ( expands to 50 - 102400)
  • Sony E Mount
  • Sensor-shift Image Stabilization
  • 3.00" Tilting Screen
  • 3686k dot Electronic viewfinder
  • 10.0fps continuous shooting
  • 4K (UHD) - 3840 x 2160 video resolution
  • Built-in Wireless
  • 657g. 127 x 96 x 74 mm
  • Weather Sealed Body
  • Replaced Sony Alpha A7R II Compare

Olympus E-P1 Key Specs

  • Announcement Date: 2009-07-29
  • 12MP - Four Thirds CMOS Sensor
  • ISO 100 - 6400
  • Micro Four Thirds Mount
  • Sensor-shift Image Stabilization
  • 3.00" Fixed Type Screen
  • 3.0fps continuous shooting
  • HD - 1280 x 720 video resolution
  • 355g. 121 x 70 x 36 mm

Sony A7R III was replaced by Sony Alpha A7R IV. You may also be interested in these comparisons:
Sony Alpha A7R IV vs Sony Alpha A7R III
Sony Alpha A7R IV vs Olympus PEN E-P1

Olympus E-P1 was replaced by Olympus PEN E-P2. You may also be interested in these comparisons:
Olympus PEN E-P2 vs Olympus PEN E-P1
Olympus PEN E-P2 vs Sony Alpha A7R III

Let's read on the following sections in order to better understand in detail how Sony A7R III and Olympus E-P1 compares and hopefully end up with enough arguments to decide which one is better for you.


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Reasons to choose Sony Alpha A7R III over Olympus PEN E-P1
Wireless Connection
Built-In vs None Better connectivity
LCD Screen
Tilting vs Fixed Type Flexible shooting positions
Touch Screen
Yes vs No Easy control of camera functions
Viewfinder
Electronic vs None Better framing and control
Sensor Resolution
42 MP vs 12 MP 250% more pixels
Max ISO
32.000 vs 6.400 400% higher Max ISO
Number of Focus Points
425 vs 11 414 more focus points
LCD Resolution
1.440k dots vs 230k dots 526% higher resolution screen
Max Mech. Shutter
1/8000s vs 1/4000s faster mechanical shutter
Continuous Shooting
10.0fps vs 3.0fps 7 fps faster
Battery Life
650 shots vs 300 shots 350 more frames with a single charge
Microphone Port
Yes vs No High quality audio recording option
Headphone Port
Yes vs No better video control
Environmental Sealing
Yes vs No shoot at tough conditions
Timelapse Recording
Yes vs No creative shooting
Color Depth
26.0 vs 21.4 higher color depth
Dynamic Range
14.7 vs 10.4 higher dynamic range
Low Light ISO
3523 vs 536 better High ISO performance
Sensor Pixel Area
20.43µm2 vs 18.45µm2 10% larger pixel area
Max Video Resolution
3840 x 2160 vs 1280 x 720 Higher Resolution Video
Flash Sync Port
Yes vs No Connect off-camera flash
NFC Connection
Yes vs No Easy wireless connectivity with compatible devices
Pixel Shift High-Res Mode
Yes (169. 6) vs No Increased resolution with pixel shift
Bluetooth
Yes vs No Connect your camera to other devices via Blueetooth
Storage Slot
2 vs 1 Extra storage slot
Smartphone Remote
Yes vs No Remote control your camera with a smartphone
UHS Card Support
UHS-II vs none Read/Write in High Speeds
Animal Eye AF Tracking
Yes vs No Easily lock and track focus on animals
Webcam Function
Yes vs No Use your camera as a Webcam
Anti Flicker
Yes vs No Reduced uneven color and exposure under flickering light
Eye Tracking Focus
Yes vs No Autofocus system locks on the eye and tracks the subject
CHECK A7R III PRICE


Reasons to choose Olympus PEN E-P1 over Sony Alpha A7R III
Weight
355 g vs 657 g 302 g lighter
CHECK E-P1 PRICE

Common Strengths of Sony Alpha A7R III and Olympus PEN E-P1
Image Stabilization
Sensor-shift vs Sensor-shift Sharper images at longer focal lengths and long exposures
External Flash Shoe
Yes vs Yes Better for flash photography
RAW Support
Yes vs Yes Better image quality
Face Detection Focus
Yes vs Yes very handy for portraits
AE Bracketing
Yes vs Yes Useful for tough lighting conditions and HDR
Common Weaknesses of Sony Alpha A7R III and Olympus PEN E-P1
Built-in Flash
No vs No Require external flash
Sony A7R III vs Olympus E-P1: Physical Specs and Body features Comparison

Size and weight is a big decision factor when you are trying to find the ideal camera for your needs. In this section, We are going to illustrate Sony A7R III and Olympus E-P1 side-by-side from the front, back and top in their relative dimensions. Sony A7R III has external dimensions of 127 x 96 x 74 mm (5 x 3.78 x 2.91″) and weighs 657 g (1.45 lb / 23.17 oz) (including batteries). Olympus E-P1 has external dimensions of 121 x 70 x 36 mm (4.76 x 2.76 x 1.42″) and weighs 355 g (0.78 lb / 12.52 oz) (including batteries).

Below you can see the front view size comparison of Sony A7R III and Olympus E-P1. Olympus E-P1 is clearly the smaller of the two cameras. Its body is 6mm narrower, 26mm shorter and 38mm thinner than Sony A7R III.

Sony A7R III vs Olympus E-P1 Camera Size Comparison - Front View
Comparison image of Sony A7R III and Olympus E-P1 Size, Weight and External Dimensions - Front View

Here is the back view size comparison of Sony A7R III and Olympus E-P1.

Sony A7R III vs Olympus E-P1 Camera Size Comparison - Back View
Comparison image of Sony A7R III and Olympus E-P1 Size and Weight - Back View

Weight is another important factor especially when deciding on a camera that you want to carry with you all day. Olympus E-P1 is significantly lighter (302g ) than the Sony A7R III which may become a big advantage especially on long walking trips.

Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Sony A7R III has a Full frame sensor and Olympus E-P1 has a smaller Four Thirds sensor, Olympus E-P1's lenses for a similar focal length and aperture will generally be lighter and smaller than the Sony A7R III lenses.

Weight Comparison

Mirrorless Cameras

A7R III
E-P1
Min
Average
Max
Thickness Comparison

Mirrorless Cameras

A7R III
E-P1
Min
Average
Max

Weather Sealing

With its weather sealed body, we believe that A7R III has a big advantage over E-P1 which doesn't provide any kind of environmental sealing.

LCD Screen Size and Features

Sony A7R III and Olympus E-P1's LCD screens has the same diagonal size of 3.00".

On the other hand, Sony A7R III features a Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Olympus E-P1 has a fixed type screen which provides less flexibility in shooting positions compared to A7R III.
Sony A7R III vs Olympus E-P1: Sensor Comparison

Sony A7R III has a 42.0MP Full frame (35.9 x 24 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, Olympus E-P1 has a 12.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features TruePic V processor.

Sony A7R III's sensor provides 30MP more than Olympus E-P1's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely. On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.

Another difference between these two cameras is that Sony A7R III's sensor lacks anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.

Below you can see the A7R III and E-P1 sensor size comparison.

Sony A7R III vs Olympus E-P1 Sensor Size Comparison
Sensor Size and Resolution Comparison image of Sony A7R III and Olympus E-P1 Cameras


As seen above, Sony A7R III has a 3.8x Larger sensor area than Olympus E-P1. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.

DxOMark Sensor Scores

Both Sony A7R III and Olympus E-P1 sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, A7R III has scored 100, 45 points higher than E-P1.

Model Overall Color Depth Dynamic Range Low-light ISO
Sony A7R III 100 26.0 bits 14.7 Evs 3523 ISO
Olympus E-P1 55 21.4 bits 10.4 Evs 536 ISO
Sony A7R III vs Olympus E-P1 Comparison of Available Lenses
Which camera has more lenses?

Number of available lenses is a big decision factor while choosing your interchangeable lens camera. When we look at the available lenses for these two cameras, we see that Sony A7R III has an advantage over Olympus E-P1. There are 184 lenses for Sony A7R III's Sony E mount, on the other hand there are only 119 lenses for Olympus E-P1's Micro Four Thirds lens mount.

Another important factor is the availability of image stabilization. Both Sony A7R III and Olympus E-P1 has Sensor based Image stabilization which means that all the lenses will be stabilized in these bodies. A7R III's built-in Image stabilization system is effective to compensate vibration up to 5.0-stops according to CIPA standards.

Lens Type # of Sony A7R III Lenses # of Olympus E-P1 Lenses
Standard Zoom 18 (13 Full Frame) 17
Standard Prime 32 (18 Full Frame) 15
Wideangle Zoom 12 (10 Full Frame) 6
Wideangle Prime 57 (39 Full Frame) 32
Telephoto Zoom 15 (13 Full Frame) 19
Telephoto Prime 26 (20 Full Frame) 11
SuperZoom 10 (2 Full Frame) 8
Wideangle Fisheye Prime 2 (0 Full Frame) 5
Macro Prime 9 (8 Full Frame) 4
Perspective Control Prime 2 (2 Full Frame) n/a
Telephoto Mirror Prime n/a 1
TOTAL 184 (125 Full Frame) 119


Now let's compare some sample lenses from each mount with typical Focal ranges for Sony A7R III and Olympus E-P1 to see how these lenses compares:

Fast Standard Zoom Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Sony FE 24-70mm F2.8 GM Lens Sony FE 24-70mm F2.8 GM
24 - 70mm 886gr 1543gr 136mm Amazon B&H Photo
Olympus ED 12-40mm f2.8 PRO Lens Olympus ED 12-40mm f2.8 PRO
24 - 80mm 382gr 737gr 84mm Amazon B&H Photo
Fast Tele Zoom Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Sony FE 70-200mm F2.8 GM Lens Sony FE 70-200mm F2.8 GM
70 - 200mm 1480gr 2137gr 200mm Amazon B&H Photo
Olympus ED 35-100mm f2.0 Lens Olympus ED 35-100mm f2.0
70 - 200mm 1650gr 2005gr 214mm Amazon B&H Photo
Fast Normal Prime Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Sony Zeiss FE 50mm F1.4 ZA Lens Sony Zeiss FE 50mm F1.4 ZA
50mm 778gr 1435gr 108mm Amazon B&H Photo
Olympus M 25mm F1.8 Lens Olympus M 25mm F1.8
50mm 136gr 491gr 41mm Amazon B&H Photo
Fast Wideangle Zoom Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Sony FE 16-35mm F2.8 GM Lens Sony FE 16-35mm F2.8 GM
16 - 35mm 680gr 1337gr 122mm Amazon B&H Photo
Olympus ED 7-14mm F2.8 PRO Lens Olympus ED 7-14mm F2.8 PRO
14 - 28mm 534gr 889gr 106mm Amazon B&H Photo
24-105mm f4 Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Sony FE 24-105mm F4 G OSS Lens Sony FE 24-105mm F4 G OSS
24 - 105mm 663gr 1320gr 113mm Amazon B&H Photo
Olympus ED 12-60mm f2.8-4.0 SWD Lens Olympus ED 12-60mm f2.8-4.0 SWD
24 - 120mm 575gr 930gr 99mm Amazon B&H Photo
Super-Tele Zoom Equivalent Lenses
Model FF Equiv. Weight Weight w/ Cam Length Street Price
Sony FE 100-400mm F4.5-5.6 GM OSS Lens Sony FE 100-400mm F4.5-5.6 GM OSS
100 - 400mm 1395gr 2052gr 205mm Amazon B&H Photo
Olympus 150-400mm F4.5 TC 1.25x IS Lens Olympus 150-400mm F4.5 TC 1.25x IS
300 - 800mm 1850gr 2205gr 314mm Amazon B&H Photo
What types of Photography are Sony A7R III and Olympus E-P1 Good for?
In this section, we rank and compare Sony A7R III and Olympus E-P1 for five different photography types in order to make your decision process easier in case you are specifically interested in one or more of these areas.

Sony A7R III for Portrait Photography

GOOD

Olympus E-P1 for Portrait Photography

AVERAGE
Large Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 42.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Large Four Thirds (17.3 x 13 mm) sensor
Image Stabilization
Average Resolution Sensor: 12.0MP
Average Ergonomics&Handling
No Built-in Viewfinder
Read the details

Sony A7R III for Street Photography

EXCELLENT

Olympus E-P1 for Street Photography

GOOD
Large Full frame (35.9 x 24 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
Medium sized Body
Read the details
Large Four Thirds (17.3 x 13 mm) sensor
Image Stabilization
Live-view
Face-Detection Focusing
Medium sized Body
No Built-in Viewfinder
Read the details

Sony A7R III for Sports Photography

GOOD

Olympus E-P1 for Sports Photography

AVERAGE
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 10.0fps
Anti Flicker feature
Environmental Sealings
Fast Max shutter speed: 1/8000s
425 Focus Points
Good Battery Life: 650 shots
Good Low Light ISO
Wireless Connection
Read the details
Image Stabilization
Fast Max shutter speed: 1/4000s
11 Focus Points
Average Ergonomics&Handling
No Built-in Viewfinder
Slow Continuous Shooting: 3.0fps
Environmental Sealings
Read the details

Sony A7R III for Daily Photography

EXCELLENT

Olympus E-P1 for Daily Photography

GOOD
Large Full frame (35.9 x 24 mm) sensor
Anti Flicker feature
Environmental Sealings
Medium size Body
657g
Body Thickness 74mm
Read the details
Large Four Thirds (17.3 x 13 mm) sensor
Medium size Body
355g
Read the details

Sony A7R III for Landscape Photography

GOOD

Olympus E-P1 for Landscape Photography

POOR
Large Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 42.0MP
Environmental Sealings
Live-view
Read the details
Large Four Thirds (17.3 x 13 mm) sensor
Live-view
Average Resolution Sensor: 12.0MP
No Environmental Sealings
Read the details

Sony A7R III vs Olympus E-P1: OUR DECISION

You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Sony A7R III and Olympus E-P1, below you can find their scores in five different aspects. Our Decision Algorithm dynamically scores cameras using 69 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.

Here is a summary of how Sony A7R III and Olympus E-P1 scores compare:

Sony A7R III
Imaging
Features
Value
Portability
Overall
Ranked #11 out of 102 in SLR-style mirrorless cameras
Ranked #11 out of 1244 in all Cameras
Olympus E-P1
Imaging
Features
Value
Portability
Overall
Ranked #98 out of 130 in Rangefinder-style mirrorless cameras
Ranked #438 out of 1244 in all Cameras

Sony A7R III is the overall winner of this comparison. It has a higher Overall Score and beats Olympus E-P1 in all criteria except one: Portability. Olympus E-P1 is significantly smaller than Sony A7R III. If small size and light body is a big priority for you, choose Olympus E-P1. Otherwise, Sony A7R III is the better camera overall.

Sony A7R III
Sony A7R III
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Olympus E-P1
Olympus E-P1
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Olympus E-P1 vs Sony A7R III Specs Table
Detailed comparison of specifications
General Sony Alpha A7R III Olympus PEN E-P1
Brand Sony Olympus
Announced 2017-10-25 2009-07-29
Body Type SLR-style mirrorless Rangefinder-style mirrorless
Sensor
Type BSI-CMOS CMOS
Size Full frame Four Thirds
Dimensions 35.9 x 24 mm 17.3 x 13 mm
Area 861.60mm2 224.90mm2
Megapixels 42 megapixels 12 megapixels
Max Resolution 7952 x 5304 4032 x 3024
Max Native Light sensitivity 32,000 ISO 6,400 ISO
Max Boosted Light Sensitivity 102400 ISO -
Min Native Light sensitivity 100 ISO 100 ISO
Min Boosted Light Sensitivity 50 ISO -
RAW Support
Autofocus
AF Touch
AF Continuous
AF Single
AF Tracking
AF Selective
AF Center
AF Multi Area
AF Live View
AF Face Detection
AF Contrast Detection
AF Phase Detection
Number of Focus Points 425 11
Lens
Manual Focus
Lens Mount Sony E Micro Four Thirds
Number of Available Lenses 184 119
Screen
Type Tilting Fixed type
Size 3.00" 3.00"
Resolution 1,440k dots 230k dots
Touch Screen
Viewfinder
Viewfinder Electronic None
Viewfinder Resolution 3,686k dots no electronic viewfinder
Viewfinder Coverage 100% n/a
Viewfinder Magnification 0.78x n/a
Photography Features
Max Mechanical Shutter 1/8000s 1/4000s
Shutter Priority
Aperture Priority
Manual Exposure Mode
Custom White Balance
Built-in Image Stabilization Sensor-shift Sensor-shift
Built-in Flash
Max Flash Sync n/a 1/180s
External Flash
Continuous Shooting 10.0 fps 3.0 fps
Multi-Segment Metering
Average Metering
Spot Metering
Partial Metering
AF-Area Metering
Center Weighted Metering
AE Bracketing
WB Bracketing
Video Features
Max Video Resolution 3840 x 2160 1280 x 720
Video Formats MPEG-4, AVCHD, XAVC S Motion JPEG
Microphone Port
Headphone Port
Connectivity
Wireless Connectivity Built-In None
HDMI
Physical
Environmental Sealing
Weight 657g 355g
Dimensions 127 x 96 x 74mm 121 x 70 x 36mm
Battery Life 650 shots 300 shots
Other Features
Timelapse Recording
GPS None None
DxO Sensor Scores
DxO Overall Score 100 55
DxO Color Depth 26.0 21.4
DxO Dynamic Range 14.7 10.4
DxO Low Light ISO 3523 536
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