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Epson R-D1 vs Sony RX10 IV

The Epson R-D1 and the Sony Cyber-shot DSC-RX10 IV are two enthusiast cameras that were officially introduced, respectively, in March 2004 and September 2017. The R-D1 is a rangefinder-style mirrorless camera, while the RX10 IV is a fixed lens compact. The cameras are based on an APS-C (R-D1) and an one-inch (RX10 IV) sensor. The Epson has a resolution of 6 megapixels, whereas the Sony provides 20 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Epson R-D1   Sony RX10 IV
Epson R-D1 Sony RX10 IV
Rangefinder camera Fixed lens compact camera
Leica M mount lenses 24-600mm f/2.4-4.0
6 MP, APS-C Sensor 20 MP, 1" Sensor
no Video 4K/30p Video
ISO 200-1600 ISO 100-12800 (64-25600)
Optical viewfinder Electronic viewfinder (2359k dots)
2.0" LCD, 235k dots 3.0" LCD, 1440k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
1 shutter flaps per second 24 shutter flaps per second
Not weather sealedWeathersealed body
142 x 89 x 40 mm, 620 g 133 x 94 x 145 mm, 1095 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Epson R-D1 and the Sony Cyber-shot DSC-RX10 IV? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

An illustration of the physical size and weight of the Epson R-D1 and the Sony RX10 IV is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter.

Size Epson R-D1 vs Sony RX10 IV
Compare R-D1 versus RX10 IV top
Comparison R-D1 or RX10 IV rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX10 IV is somewhat smaller (1 percent) than the Epson R-D1. It is noteworthy in this context that the RX10 IV is splash and dust-proof, while the R-D1 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX10 IV has a lens built in, whereas the R-D1 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the R-D1 and their specifications in the Leica M Lens Catalog.

The power pack in the RX10 IV can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Epson R-D1» 5.6 in 3.5 in 1.6 in 21.9 oz .. n Mar 2004 2,999- i Epson R-D1
 
Sony RX10 IV« 5.2 in 3.7 in 5.7 in 38.6 oz 400 Y Sep 2017 1,699 i i Sony RX10 IV
 
Canon Rebel« » 5.6 in 3.9 in 2.8 in 22.9 oz 400 n Aug 2003 899- i Canon Rebel
 
Leica CL« » 5.2 in 3.1 in 1.8 in 14.2 oz 220 n Nov 2017 2,795 i i Leica CL
 
Leica M10« » 5.5 in 3.1 in 1.5 in 23.3 oz 210 Y Jan 2017 6,595 i i Leica M10
 
Leica X-U Typ 113« » 5.5 in 3.1 in 3.5 in 22.4 oz 450 Y Jan 2016 2,950 i i Leica X-U Typ 113
 
Leica X Vario« » 5.2 in 2.9 in 3.7 in 24.0 oz 450 n Jun 2013 2,850 i i Leica X Vario
 
Leica M9« » 5.5 in 3.1 in 1.5 in 20.6 oz .. n Sep 2009 7,999- i Leica M9
 
Nikon D40« » 4.9 in 3.7 in 2.5 in 18.4 oz 470 n Nov 2006 499- i Nikon D40
 
Nikon D50« » 5.2 in 4.0 in 3.0 in 21.9 oz 400 n Apr 2005 749- i Nikon D50
 
Nikon D70s« » 5.5 in 4.4 in 3.1 in 24.0 oz 500 n Apr 2005 899- i Nikon D70s
 
Nikon D70« » 5.5 in 4.4 in 3.1 in 24.0 oz 400 n Jan 2004 999- i Nikon D70
 
Sony RX100 VI« » 4.0 in 2.3 in 1.7 in 10.6 oz 240 n Jun 2018 1,199- i Sony RX100 VI
 
Sony RX10 III« » 5.2 in 3.7 in 5.0 in 37.1 oz 420 Y Mar 2016 1,499 i i Sony RX10 III
 
Sony RX100 V« » 4.0 in 2.3 in 1.6 in 10.5 oz 220 n Oct 2016 999 i i Sony RX100 V
 
Sony RX10 II« » 5.1 in 3.5 in 4.0 in 28.7 oz 400 Y Jun 2015 1,299- i Sony RX10 II
 
Sony RX10« » 5.1 in 3.5 in 4.0 in 28.7 oz 420 Y Oct 2013 1,299- i Sony RX10
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The RX10 IV was launched at a lower price than the R-D1, despite having a lens built in. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

 

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Epson R-D1 features an APS-C sensor and the Sony RX10 IV an one-inch sensor. The sensor area in the RX10 IV is 69 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Epson R-D1 and Sony RX10 IV sensor measures

Despite having a smaller sensor, the RX10 IV offers a higher resolution of 20 megapixels, compared with 6 MP of the R-D1. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 7.85μm for the R-D1). However, it should be noted that the RX10 IV is much more recent (by 13 years and 6 months) than the R-D1, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Sony RX10 IV implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX10 IV for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inch or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inch or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inch or 46.3 x 30.9 cm. The corresponding values for the Epson R-D1 are 15 x 10 inch or 38.2 x 25.4 cm for good quality, 12 x 8 inch or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inch or 25.5 x 16.9 cm for excellent quality prints.

The RX10 IV has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Epson R-D1 has a native sensitivity range from ISO 200 to ISO 1600. The corresponding ISO settings for the Sony Cyber-shot DSC-RX10 IV are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 64-25600.

R-D1 versus RX10 IV MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Epson R-D1» APS-C 6.0 3008 2000-----Epson R-D1
 
Sony RX10 IV« 1-inch 20.0 5472 36484K/30p----Sony RX10 IV
 
Canon Rebel« » APS-C 6.3 3072 2048-21.010.854455Canon Rebel
 
Leica CL« » APS-C 24.1 6014 40144K/30p----Leica CL
 
Leica M10« » Full Frame 23.8 5952 3992-24.413.2213386Leica M10
 
Leica X-U Typ 113« » APS-C 16.1 4928 32641080/30p----Leica X-U Typ 113
 
Leica X Vario« » APS-C 16.1 4928 32721080/30p23.412.7132078Leica X Vario
 
Leica M9« » Full Frame 18.1 5212 3472-22.511.788469Leica M9
 
Nikon D40« » APS-C 6.0 3008 2000-21.011.056156Nikon D40
 
Nikon D50« » APS-C 6.0 3008 2000-20.910.856055Nikon D50
 
Nikon D70s« » APS-C 6.0 3008 2000-20.410.352950Nikon D70s
 
Nikon D70« » APS-C 6.0 3008 2000-20.410.352950Nikon D70
 
Sony RX100 VI« » 1-inch 20.0 5472 36484K/30p----Sony RX100 VI
 
Sony RX10 III« » 1-inch 20.0 5472 36484K/30p23.112.647270Sony RX10 III
 
Sony RX100 V« » 1-inch 20.0 5472 36484K/30p22.812.458670Sony RX100 V
 
Sony RX10 II« » 1-inch 20.0 5472 36484K/30p23.012.653170Sony RX10 II
 
Sony RX10« » 1-inch 20.0 5472 36481080/60p22.912.647469Sony RX10

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The RX10 IV indeed provides for movie recording, while the R-D1 does not. The highest resolution format that the RX10 IV can use is 4K/30p.

 

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the RX10 IV has an electronic viewfinder (2359k dots), while the R-D1 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The following table reports on some other key feature differences and similarities of the Epson R-D1, the Sony RX10 IV, and comparable cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Epson R-D1»optical n 2.0 235 fixed n 1/2000s 1.0 n n Epson R-D1
 
Sony RX10 IV«2359 Y 3.0 1440 tilting Y 1/2000s 24.0 Y Y Sony RX10 IV
 
Canon Rebel« »optical n 1.8 118 fixed n 1/4000s 2.5 Y n Canon Rebel
 
Leica CL« »2360 Y 3.0 1040 fixed Y 1/8000s 10.0 n n Leica CL
 
Leica M10« »optical n 3.0 1037 fixed n 1/4000s 5.0 n n Leica M10
 
Leica X-U Typ 113« »- n 3.0 920 fixed n 1/2000s 5.0 Y n Leica X-U Typ 113
 
Leica X Vario« »- n 3.0 920 fixed n 1/2000s 5.0 Y n Leica X Vario
 
Leica M9« »optical n 2.5 230 fixed n 1/4000s 2.0 n n Leica M9
 
Nikon D40« »optical n 2.5 230 fixed n 1/4000s 2.5 Y n Nikon D40
 
Nikon D50« »optical n 2.0 130 fixed n 1/4000s 2.5 Y n Nikon D50
 
Nikon D70s« »optical n 2.0 130 fixed n 1/8000s 3.0 Y n Nikon D70s
 
Nikon D70« »optical n 1.8 130 fixed n 1/8000s 3.0 Y n Nikon D70
 
Sony RX100 VI« »2359 n 3.0 1229 tilting Y 1/2000s 24.0 Y Y Sony RX100 VI
 
Sony RX10 III« »2359 Y 3.0 1229 tilting n 1/2000s 14.0 Y Y Sony RX10 III
 
Sony RX100 V« »2359 n 3.0 1229 tilting n 1/2000s 24.0 Y Y Sony RX100 V
 
Sony RX10 II« »2359 Y 3.0 1229 tilting n 1/3200s 14.0 Y Y Sony RX10 II
 
Sony RX10« »1440 Y 3.0 1229 tilting n 1/3200s 10.0 Y Y Sony RX10

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The RX10 IV has a touchscreen, while the R-D1 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the RX10 IV is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The R-D1 writes its imaging data to SDHC cards, while the RX10 IV uses SDXC or Memory Stick PRO Duo cards. The RX10 IV supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the R-D1 cannot take advantage of Ultra High Speed SD cards.

 

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Epson R-D1 and Sony Cyber-shot DSC-RX10 IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Epson R-D1»Y---------Epson R-D1
 
Sony RX10 IV«YstereomonoYYmicro2.0YY-Sony RX10 IV
 
Canon Rebel« »Y-----1.1---Canon Rebel
 
Leica CL« »Ystereomono----Y--Leica CL
 
Leica M10« »Y------Y--Leica M10
 
Leica X-U Typ 113« »Ystereomono---2.0---Leica X-U Typ 113
 
Leica X Vario« »Ystereomono--mini2.0---Leica X Vario
 
Leica M9« »Y-----2.0---Leica M9
 
Nikon D40« »Y-----2.0---Nikon D40
 
Nikon D50« »Y-----2.0---Nikon D50
 
Nikon D70s« »Y-----2.0---Nikon D70s
 
Nikon D70« »Y-----1.0---Nikon D70
 
Sony RX100 VI« »-stereomono--micro2.0YYYSony RX100 VI
 
Sony RX10 III« »YstereomonoYYmicro2.0YY-Sony RX10 III
 
Sony RX100 V« »-stereomono--micro2.0YY-Sony RX100 V
 
Sony RX10 II« »YstereomonoYYmicro2.0YY-Sony RX10 II
 
Sony RX10« »YstereomonoYYmicro2.0YY-Sony RX10

It is notable that the RX10 IV offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the R-D1 does not offer wifi capability.

Studio photographers will appreciate that the Epson R-D1 (unlike the RX10 IV) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The RX10 IV is a recent model that features in the current product line-up of Sony. In contrast, the R-D1 has been discontinued (but it can be found pre-owned on eBay). There has not been a direct replacement model for the R-D1 from Epson. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Epson and Sony websites.


Review summary

So what is the bottom line? Is the Epson R-D1 better than the Sony RX10 IV or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Epson R-D1:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More heavily discounted: Has been available for much longer (launched in March 2004).

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Advantages of the Sony Cyber-shot DSC-RX10 IV:

  • More detail: Has more megapixels (20 vs 6MP), which boosts linear resolution by 82%.
  • Broader imaging potential: Can capture not only stills but also 4K/30p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 235k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Faster burst: Shoots at higher frequency (24 vs 1 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Ready to shoot: Has an integrated lens, whereas the R-D1 necessitates an extra lens.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More affordable: Was introduced at a lower price, despite coming with a built-in lens.
  • More modern: Reflects 13 years and 6 months of technical progress since the R-D1 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the RX10 IV is the clear winner of the contest (20 : 4 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

R-D1 04:20 RX10 IV

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the R-D1 or the RX10 IV perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
 
Epson R-D1»----- Mar 2004 2,999- i Epson R-D1
 
Sony RX10 IV«+84/1004.5/5-5/5 Sep 2017 1,699 i i Sony RX10 IV
 
Canon Rebel« »-+ +-o- Aug 2003 899- i Canon Rebel
 
Leica CL« »----4/5 Nov 2017 2,795 i i Leica CL
 
Leica M10« »--4/5-4.5/5 Jan 2017 6,595 i i Leica M10
 
Leica X-U Typ 113« »----3.5/5 Jan 2016 2,950 i i Leica X-U Typ 113
 
Leica X Vario« »--4/54/54/5 Jun 2013 2,850 i i Leica X Vario
 
Leica M9« »--4.5/54.5/5- Sep 2009 7,999- i Leica M9
 
Nikon D40« »81/100+ +o5/54.5/5 Nov 2006 499- i Nikon D40
 
Nikon D50« »78/100+ +4/5o4.5/5 Apr 2005 749- i Nikon D50
 
Nikon D70s« »---o5/5 Apr 2005 899- i Nikon D70s
 
Nikon D70« »-+ +-o- Jan 2004 999- i Nikon D70
 
Sony RX100 VI« »+ +83/1004/5-4.5/5 Jun 2018 1,199- i Sony RX100 VI
 
Sony RX10 III« »+84/1004.5/54.5/54.5/5 Mar 2016 1,499 i i Sony RX10 III
 
Sony RX100 V« »+ +83/1004/55/54.5/5 Oct 2016 999 i i Sony RX100 V
 
Sony RX10 II« »+ +82/1004.5/54.5/54/5 Jun 2015 1,299- i Sony RX10 II
 
Sony RX10« »+80/1004.5/54.5/54.5/5 Oct 2013 1,299- i Sony RX10
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Epson R-D1:
Check Ebay offers
Sony RX10 IV:
Check Amazon price

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Epson R-D1 vs Sony RX10 IV

    Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.

    Camera Specifications
    Camera Model Epson R-D1 Sony RX10 IV
    Camera Type Rangefinder camera Fixed lens compact camera
    Camera Lens Leica M mount lenses 24-600mm f/2.4-4.0
    Launch Date March 2004 September 2017
    Launch Price USD 2999 USD 1699
    Sensor Specs Epson R-D1 Sony RX10 IV
    Sensor Technology CCD BSI-CMOS
    Sensor Format APS-C Sensor 1" Sensor
    Sensor Size 23.7 x 15.6 mm 13.2 x 8.8 mm
    Sensor Area 369.72 mm2 116.16 mm2
    Sensor Diagonal 28.4 mm 15.9 mm
    Crop Factor 1.5x 2.7x
    Sensor Resolution 6 Megapixels 20 Megapixels
    Image Resolution 3008 x 2000 pixels 5472 x 3648 pixels
    Pixel Pitch 7.85 μm 2.41 μm
    Pixel Density 1.63 MP/cm2 17.18 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 4K/30p Video
    ISO Setting 200-1600 ISO 100-12800 ISO
    ISO Boost no Enhancement 64-25600 ISO
    Screen Specs Epson R-D1 Sony RX10 IV
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification ..x 0.70x
    Viewfinder Resolution 2359k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View
    Rear LCD Size 2.0 inch 3.0 inch
    LCD Resolution 235k dots 1440k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Epson R-D1 Sony RX10 IV
    Autofocus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidNo Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/2000/s 1/2000/s
    Continuous Shooting 1 shutter flaps/s 24 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/32000s
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium SDHC cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Epson R-D1 Sony RX10 IV
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB no USB 2.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Epson R-D1 Sony RX10 IV
    Environmental SealingNot weather sealedWeathersealed body
    Battery Type EU-85 NP-FW50
    In-Camera Charging no USB charging USB charging
    Body Dimensions 142 x 89 x 40 mm
    (5.6 x 3.5 x 1.6 in)
    133 x 94 x 145 mm
    (5.2 x 3.7 x 5.7 in)
    Camera Weight 620 g (21.9 oz) 1095 g (38.6 oz)

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