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Sony A7R III vs Epson R-D1x 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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Epson R-D1x

6 MP | APS-C (23.7 x 15.6 mm) CCD Sensor

Epson R-D1x
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Sony A7R III vs Epson R-D1x Comparison Overview

Here we are comparing A7R III and R-D1x, two Mirrorless cameras from Sony and Epson. Sony Alpha A7R III is a Pro Mirrorless class camera and Epson R-D1x is a Advanced Mirrorless class camera.

Sony A7R III was introduced to market in October 2017 and Epson R-D1x was launched in February 2009. As you can see, R-D1x 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 Epson R-D1x 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

Epson R-D1x Key Specs

  • Announcement Date: 2009-02-27
  • 6MP - APS-C CCD Sensor
  • ISO 200 - 1600
  • Leica M Mount
  • 2.50" Fixed Type Screen
  • Optical (rangefinder) viewfinder
  • fps continuous shooting
  • No Video Mode
  • 620g. 142 x 89 x 40 mm
  • Replaced Epson R-D1 Compare

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 Epson R-D1x

Let's read on the following sections in order to better understand in detail how Sony A7R III and Epson R-D1x compares and hopefully end up with enough arguments to decide which one is better for you.


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**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Sony Alpha A7R III over Epson R-D1x
Wireless Connection
Built-In vs None Better connectivity
In-built Image Stabilization
Sensor-shift vs None Sharper images at longer focal lengths and slow shutter speeds
LCD Screen
Tilting vs Fixed Type Flexible shooting positions
Touch Screen
Yes vs No Easy control of camera functions
Face Detection Focus
Yes vs No very handy for portraits
Sensor Resolution
42 MP vs 6 MP 600% more pixels
Max ISO
32.000 vs 1.600 1900% higher Max ISO
LCD Screen Size
3″ vs 2.5" 0.5 inches larger display
LCD Resolution
1.440k dots vs 235k dots 512% higher resolution screen
Max Mech. Shutter
1/8000s vs 1/2000s faster mechanical shutter
Manual Exposure
Yes vs No better exposure control
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
Max Video Resolution
3840 x 2160 vs None Higher Resolution Video
AE Bracketing
Yes vs No Useful for tough lighting conditions and HDR
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 Epson R-D1x over Sony Alpha A7R III
Weight
620 g vs 657 g 37 g lighter
Sensor Pixel Area
61.42µm2 vs 20.43µm2 200% larger pixel area
CHECK R-D1x PRICE

Common Strengths of Sony Alpha A7R III and Epson R-D1x
External Flash Shoe
Yes vs Yes Better for flash photography
Viewfinder
Yes (Electronic) vs Yes (Optical) Better framing and control
RAW Support
Yes vs Yes Better image quality
Common Weaknesses of Sony Alpha A7R III and Epson R-D1x
Built-in Flash
No vs No Require external flash
LCD Screen Size
2.50" vs 2.50" Small display
Sony A7R III vs Epson R-D1x: 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 Epson R-D1x 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). Epson R-D1x has external dimensions of 142 x 89 x 40 mm (5.59 x 3.5 x 1.57″) and weighs 620 g (1.37 lb / 21.87 oz) (including batteries).

Below you can see the front view size comparison of Sony A7R III and Epson R-D1x. Epson R-D1x is 7mm shorter and 34mm thinner than Sony A7R III but it is also 15mm wider.

Sony A7R III vs Epson R-D1x Camera Size Comparison - Front View
Comparison image of Sony A7R III and Epson R-D1x Size, Weight and External Dimensions - Front View

Weight is another important factor especially when deciding on a camera that you want to carry with you all day. Epson R-D1x is 37g lighter than the Sony A7R III but we don't think this will make a significant difference.

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 Epson R-D1x has a smaller APS-C sensor, Epson R-D1x'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
R-D1x
Min
Average
Max
Thickness Comparison

Mirrorless Cameras

A7R III
R-D1x
Min
Average
Max

Weather Sealing

With its weather sealed body, we believe that A7R III has a big advantage over R-D1x which doesn't provide any kind of environmental sealing.

LCD Screen Size and Features

Sony A7R III's 3.00" LCD screen is slightly larger than Epson R-D1x's 2.5" screen.

In addition to the size advantage, Sony A7R III LCD screen also has a Tilting feature where you can change the angle of the screen to make it easier to shoot from waist or over the head levels. On the other hand, Epson R-D1x has a fixed type screen which provides less flexibility in shooting positions compared to A7R III.
Sony A7R III vs Epson R-D1x: 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, Epson R-D1x has a 6.0MP APS-C (23.7 x 15.6 mm ) sized CCD sensor .

Sony A7R III's sensor provides 36MP more than Epson R-D1x'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 R-D1x sensor size comparison.

Sony A7R III vs Epson R-D1x Sensor Size Comparison
Sensor Size and Resolution Comparison image of Sony A7R III and Epson R-D1x Cameras


As seen above, Sony A7R III has a 2.3x Larger sensor area than Epson R-D1x. 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.

Sony A7R III vs Epson R-D1x 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 Epson R-D1x. There are 184 lenses for Sony A7R III's Sony E mount, on the other hand there are only 62 lenses for Epson R-D1x's Leica M lens mount.

Another important factor is the availability of image stabilization. Sony A7R III has a big advantage in this regard because it has a sensor based image stabilization (IS) which means that all the lenses mounted to this body will be stabilized. A7R III's built-in Image stabilization system is effective to compensate vibration up to 5.0-stops according to CIPA standards.
On the other hand, Epson R-D1x doesn't have this feature so you have to buy a lens with optical stabilization feature. Currently there are 0 lenses for Leica M mount with Optical Image Stabilization features.

Lens Type # of Sony A7R III Lenses # of Epson R-D1x Lenses
Standard Zoom 18 (13 Full Frame) n/a
Standard Prime 32 (18 Full Frame) 15
Wideangle Zoom 12 (10 Full Frame) 1
Wideangle Prime 57 (39 Full Frame) 32
Telephoto Zoom 15 (13 Full Frame) n/a
Telephoto Prime 26 (20 Full Frame) 11
SuperZoom 10 (2 Full Frame) n/a
Wideangle Fisheye Prime 2 (0 Full Frame) n/a
Macro Prime 9 (8 Full Frame) 2
Perspective Control Prime 2 (2 Full Frame) 1
Telephoto Mirror Prime n/a n/a
TOTAL 184 (125 Full Frame) 62

What types of Photography are Sony A7R III and Epson R-D1x Good for?
In this section, we rank and compare Sony A7R III and Epson R-D1x 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

Epson R-D1x for Portrait Photography

POOR
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 APS-C (23.7 x 15.6 mm) sensor
Optical Built-in Viewfinder
Average Ergonomics&Handling
Very Low Resolution Sensor: 6.0MP
No Image Stabilization
Read the details

Sony A7R III for Street Photography

EXCELLENT

Epson R-D1x for Street Photography

AVERAGE
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 APS-C (23.7 x 15.6 mm) sensor
Optical Built-in Viewfinder
Medium sized Body
No Image Stabilization
No Live-view
Read the details

Sony A7R III for Sports Photography

GOOD

Epson R-D1x 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
Optical Built-in Viewfinder
Average Ergonomics&Handling
Average Max shutter speed: 1/2000s
No Image Stabilization
Environmental Sealings
Focus Points
Read the details

Sony A7R III for Daily Photography

EXCELLENT

Epson R-D1x for Daily Photography

AVERAGE
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 APS-C (23.7 x 15.6 mm) sensor
Medium size Body
620g
Body Thickness 40mm
Read the details

Sony A7R III for Landscape Photography

GOOD

Epson R-D1x 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 APS-C (23.7 x 15.6 mm) sensor
Very Low Resolution Sensor: 6.0MP
No Environmental Sealings
No Live-view
Read the details

Sony A7R III vs Epson R-D1x: 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 Epson R-D1x, 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 Epson R-D1x 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
Epson R-D1x
Imaging
Features
Value
Portability
Overall
Ranked #129 out of 130 in Rangefinder-style mirrorless cameras
Ranked #975 out of 1244 in all Cameras

Sony A7R III is the overall winner of this comparison. It has a higher Overall Score and beats Epson R-D1x in all criteria except one: Portability. But the size difference between these cameras are negligible in real world so it is not a big disadvantage for Sony A7R III.

Sony A7R III
Sony A7R III
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CHECK PRICE

Epson R-D1x
Epson R-D1x
CHECK PRICE

CHECK PRICE

Epson R-D1x vs Sony A7R III Specs Table
Detailed comparison of specifications
General Sony Alpha A7R III Epson R-D1x
Brand Sony Epson
Announced 2017-10-25 2009-02-27
Body Type SLR-style mirrorless Rangefinder-style mirrorless
Sensor
Type BSI-CMOS CCD
Size Full frame APS-C
Dimensions 35.9 x 24 mm 23.7 x 15.6 mm
Area 861.60mm2 369.72mm2
Megapixels 42 megapixels 6 megapixels
Max Resolution 7952 x 5304 3008 x 2000
Max Native Light sensitivity 32,000 ISO 1,600 ISO
Max Boosted Light Sensitivity 102400 ISO -
Min Native Light sensitivity 100 ISO 200 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 n/a
Lens
Manual Focus
Lens Mount Sony E Leica M
Number of Available Lenses 184 62
Screen
Type Tilting Fixed type
Size 3.00" 2.50"
Resolution 1,440k dots 235k dots
Touch Screen
Viewfinder
Viewfinder Electronic Optical (rangefinder)
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 1/2000s
Shutter Priority
Aperture Priority
Manual Exposure Mode
Custom White Balance
Built-in Image Stabilization Sensor-shift No
Built-in Flash
External Flash
Continuous Shooting 10.0 fps n/a
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 None
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 620g
Dimensions 127 x 96 x 74mm 142 x 89 x 40mm
Battery Life 650 shots n/a
Other Features
Timelapse Recording
GPS None None
DxO Sensor Scores
DxO Overall Score 100 not tested
DxO Color Depth 26.0 not tested
DxO Dynamic Range 14.7 not tested
DxO Low Light ISO 3523 not tested
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