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Epson R-D1 vs Sony RX100 III

The Epson R-D1 and the Sony Cyber-shot DSC-RX100 III are two digital cameras that were officially introduced, respectively, in March 2004 and May 2014. The R-D1 is a rangefinder-focusing mirrorless camera, while the RX100 III is a fixed lens compact. The cameras are based on an APS-C (R-D1) and an one-inch (RX100 III) 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
versus
Sony RX100 III
Epson R-D1   Sony RX100 III
Rangefinder camera Fixed lens compact camera
Leica M mount lenses 24-70mm f/1.8-2.8
6 MP – APS-C sensor 20 MP – 1" sensor
no Video 1080/60p Video
ISO 200-1,600 ISO 100-12,800 (80 - 25,600)
Optical viewfinder Electronic viewfinder (1440k dots)
2.0" LCD – 235k dots 3.0" LCD – 1229k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
1 shutter flaps per second 10 shutter flaps per second
142 x 89 x 40 mm, 620 g 102 x 58 x 41 mm, 290 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Epson R-D1 and the Sony Cyber-shot DSC-RX100 III? 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Epson R-D1 and the Sony RX100 III. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions are rounded to the nearest millimeter.

Size Epson R-D1 vs Sony RX100 III
Compare R-D1 versus RX100 III top
Comparison R-D1 or RX100 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 III is considerably smaller (53 percent) than the Epson R-D1. In this context, it is worth noting that neither the R-D1 nor the RX100 III are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 III 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 RX100 III can be charged via the USB port, which can be very convenient when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
1.
 
Epson R-D1 142 mm 89 mm 40 mm 620 g .. n Mar 2004 US$ 2 999ebay.com
2.
 
Sony RX100 III 102 mm 58 mm 41 mm 290 g 320 n May 2014 US$ 799ebay.com
3.
 
Canon 300D 142 mm 99 mm 72 mm 649 g 400 n Aug 2003 US$ 899ebay.com
4.
 
Canon 350D 127 mm 94 mm 64 mm 540 g 400 n Feb 2005 US$ 899ebay.com
5.
 
Canon G5 X 112 mm 76 mm 44 mm 353 g 210 n Oct 2015 US$ 799ebay.com
6.
 
Canon G7 X 103 mm 60 mm 40 mm 304 g 210 n Sep 2014 US$ 699ebay.com
7.
 
Leica M8 139 mm 80 mm 37 mm 591 g 550 n Sep 2006 US$ 5 499ebay.com
8.
 
Leica M9 139 mm 80 mm 37 mm 585 g 550 n Sep 2009 US$ 7 999ebay.com
9.
 
Leica M10 139 mm 80 mm 39 mm 660 g 210 Y Jan 2017 US$ 6 599ebay.com
10.
 
Leica X Vario 133 mm 73 mm 95 mm 680 g 450 n Jun 2013 US$ 2 849ebay.com
11.
 
Nikon D50 133 mm 102 mm 76 mm 620 g 400 n Apr 2005 US$ 749ebay.com
12.
 
Nikon D70 140 mm 111 mm 78 mm 679 g 400 n Jan 2004 US$ 999ebay.com
13.
 
Nikon D70s 140 mm 111 mm 78 mm 679 g 500 n Apr 2005 US$ 899ebay.com
14.
 
Olympus E-300 147 mm 85 mm 64 mm 624 g 750 n Sep 2004 US$ 799ebay.com
15.
 
Panasonic FZ1000 137 mm 99 mm 131 mm 831 g 360 n Jun 2014 US$ 899ebay.com
16.
 
Sony RX100 II 102 mm 58 mm 38 mm 281 g 350 n Jun 2013 US$ 749ebay.com
17.
 
Sony RX100 IV 102 mm 58 mm 41 mm 298 g 280 n Jun 2015 US$ 999ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The RX100 III 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the 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 RX100 III an one-inch sensor. The sensor area in the RX100 III 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 RX100 III sensor measures

Despite having a smaller sensor, the RX100 III 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 RX100 III is much more recent (by 10 years and 2 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 RX100 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX100 III for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Epson R-D1 are 15 x 10 inches or 38.2 x 25.4 cm for good quality, 12 x 8 inches or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inches or 25.5 x 16.9 cm for excellent quality prints.

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-RX100 III are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 80-25600.

In terms of underlying technology, the R-D1 is build around a CCD sensor, while the RX100 III uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

R-D1 versus RX100 III MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Epson R-D1 APS-C 6.0 3008 2000none21.110.456455
2.
 
Sony RX100 III 1-inch 20.0 5472 36481080/60p22.412.349567
3.
 
Canon 300D APS-C 6.3 3072 2048none21.010.854455
4.
 
Canon 350D APS-C 8.0 3456 2304none21.810.863760
5.
 
Canon G5 X 1-inch 20.0 5472 36481080/60p21.412.347162
6.
 
Canon G7 X 1-inch 20.0 5472 36481080/60p23.012.755671
7.
 
Leica M8 APS-H 10.4 3936 2630none21.111.366359
8.
 
Leica M9 Full Frame 18.1 5212 3472none22.511.788469
9.
 
Leica M10 Full Frame 23.8 5952 3992none24.413.2213386
10.
 
Leica X Vario APS-C 16.1 4928 32721080/30p23.412.7132078
11.
 
Nikon D50 APS-C 6.0 3008 2000none20.910.856055
12.
 
Nikon D70 APS-C 6.0 3008 2000none20.410.352950
13.
 
Nikon D70s APS-C 6.0 3008 2000none20.410.352950
14.
 
Olympus E-300 Four Thirds 8.0 3264 2448none20.410.1-4048
15.
 
Panasonic FZ1000 1-inch 20.0 5472 36484K/30p22.111.751764
16.
 
Sony RX100 II 1-inch 20.0 5472 36481080/60p22.512.448367
17.
 
Sony RX100 IV 1-inch 20.0 5472 36484K/30p22.812.659170
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The RX100 III indeed provides for movie recording, while the R-D1 does not. The highest resolution format that the RX100 III can use is 1080/60p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the RX100 III has an electronic viewfinder (1440k 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 table below summarizes some of the other core capabilities of the Epson R-D1 and Sony RX100 III in connection with corresponding information for a sample of similar cameras.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Epson R-D1optical n2.0 / 235 fixed n 1/2000s 1.0/s n n
2.
 
Sony RX100 III1440 n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
3.
 
Canon 300Doptical n1.8 / 118 fixed n 1/4000s 2.5/s Y n
4.
 
Canon 350Doptical n1.8 / 115 fixed n 1/4000s 3.0/s Y n
5.
 
Canon G5 X2360 n3.0 / 1040 swivel Y 1/2000s 5.9/s Y Y
6.
 
Canon G7 Xnone n3.0 / 1040 tilting Y 1/2000s 6.5/s Y Y
7.
 
Leica M8optical n2.5 / 230 fixed n 1/8000s 2.0/s n n
8.
 
Leica M9optical n2.5 / 230 fixed n 1/4000s 2.0/s n n
9.
 
Leica M10optical n3.0 / 1037 fixed n 1/4000s 5.0/s n n
10.
 
Leica X Variooptional n3.0 / 920 fixed n 1/2000s 5.0/s Y n
11.
 
Nikon D50optical n2.0 / 130 fixed n 1/4000s 2.5/s Y n
12.
 
Nikon D70optical n1.8 / 130 fixed n 1/8000s 3.0/s Y n
13.
 
Nikon D70soptical n2.0 / 130 fixed n 1/8000s 3.0/s Y n
14.
 
Olympus E-300optical n1.8 / 134 fixed n 1/4000s 2.5/s Y n
15.
 
Panasonic FZ10002359 n3.0 / 921 swivel n 1/4000s 12.0/s Y Y
16.
 
Sony RX100 IIoptional n3.0 / 1229 tilting n 1/2000s 10.0/s Y Y
17.
 
Sony RX100 IV2359 n3.0 / 1228 tilting n 1/2000s 16.0/s Y Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The RX100 III has one, while the R-D1 does not. While the built-in flash of the RX100 III is not very powerful, it can at times be useful as a fill-in light.

The RX100 III has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the R-D1 does not have a selfie-screen.

The R-D1 writes its imaging data to SDHC cards, while the RX100 III uses SDXC or Memory Stick PRO Duo cards. The RX100 III 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.

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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-RX100 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Epson R-D1Y- / --------
2.
 
Sony RX100 III-stereo / mono--micro2.0YY-
3.
 
Canon 300DY- / ----1.1---
4.
 
Canon 350DY- / ----2.0---
5.
 
Canon G5 XYstereo / mono--mini2.0YY-
6.
 
Canon G7 X-stereo / mono--micro2.0YY-
7.
 
Leica M8Y- / ----2.0---
8.
 
Leica M9Y- / ----2.0---
9.
 
Leica M10Y- / -----Y--
10.
 
Leica X VarioYstereo / mono--mini2.0---
11.
 
Nikon D50Y- / ----2.0---
12.
 
Nikon D70Y- / ----1.0---
13.
 
Nikon D70sY- / ----2.0---
14.
 
Olympus E-300Y- / ----2.0---
15.
 
Panasonic FZ1000Ystereo / monoY-micro2.0YY-
16.
 
Sony RX100 IIYstereo / mono--micro2.0YY-
17.
 
Sony RX100 IV-stereo / mono--micro2.0YY-

It is notable that the R-D1 has a hotshoe, while the RX100 III does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Epson R-D1 (unlike the RX100 III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the R-D1 and the RX100 III have been discontinued, but can regularly be found used on ebay. The RX100 III was replaced by the Sony RX100 IV, while the R-D1 does not have a direct successor. Further information on the features and operation of the R-D1 and RX100 III can be found, respectively, in the Epson R-D1 Manual (free pdf) or the online Sony RX100 III Manual.

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Review summary

So how do things add up? Is the Epson R-D1 better than the Sony RX100 III or vice versa? Below is a summary of the relative strengths of each of the two contestants.

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Advantages 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 lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
  • 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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Reasons to prefer the Sony Cyber-shot DSC-RX100 III:

  • More detail: Has more megapixels (20 vs 6MP), which boosts linear resolution by 82%.
  • Broader imaging potential: Can capture not only stills but also 1080/60p video.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • 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 (1229k vs 235k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (10 vs 1 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has an integrated lens, whereas the R-D1 necessitates an extra lens.
  • More compact: Is smaller (102x58mm vs 142x89mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight even though it has a lens built in (unlike the R-D1).
  • Easier travel charging: Can be conveniently charged via its USB port.
  • 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 10 years and 2 months of technical progress since the R-D1 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the RX100 III is the clear winner of the contest (19 : 5 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 05:19 RX100 III

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the R-D1 or the RX100 III. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Epson R-D1............ Mar 2004 US$ 2 999ebay.com
2.
 
Sony RX100 III5/5+ +..82/1004.5/55/5 May 2014 US$ 799ebay.com
3.
 
Canon 300D......+ +.... Aug 2003 US$ 899ebay.com
4.
 
Canon 350D..80/100..+ +o.. Feb 2005 US$ 899ebay.com
5.
 
Canon G5 X5/5+ +..78/1004.5/54.5/5 Oct 2015 US$ 799ebay.com
6.
 
Canon G7 X4/5+ +..77/1004.5/54.5/5 Sep 2014 US$ 699ebay.com
7.
 
Leica M8......+ +.... Sep 2006 US$ 5 499ebay.com
8.
 
Leica M9........4.5/5.. Sep 2009 US$ 7 999ebay.com
9.
 
Leica M104.5/5......4/54.5/5 Jan 2017 US$ 6 599ebay.com
10.
 
Leica X Vario3/5......4/54/5 Jun 2013 US$ 2 849ebay.com
11.
 
Nikon D50..78/100..+ +4/54.5/5 Apr 2005 US$ 749ebay.com
12.
 
Nikon D70......+ +.... Jan 2004 US$ 999ebay.com
13.
 
Nikon D70s..........5/5 Apr 2005 US$ 899ebay.com
14.
 
Olympus E-300......+o4.5/5 Sep 2004 US$ 799ebay.com
15.
 
Panasonic FZ10004/5+ +..82/1004.5/54.5/5 Jun 2014 US$ 899ebay.com
16.
 
Sony RX100 II5/5+ +..79/1004.5/54.5/5 Jun 2013 US$ 749ebay.com
17.
 
Sony RX100 IV4.5/5+ +..85/1004/54.5/5 Jun 2015 US$ 999ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, 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 RX100 III

    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 RX100 III
    Camera Type Rangefinder camera Fixed lens compact camera
    Camera Lens Leica M mount lenses 24-70mm f/1.8-2.8
    Launch Date March 2004 May 2014
    Launch Price USD 2,999 USD 799
    Sensor Specs Epson R-D1 Sony RX100 III
    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 1080/60p Video
    ISO Setting 200 - 1,600 ISO 100 - 12,800 ISO
    ISO Boost no Enhancement 80 - 25,600 ISO
    DXO Sensor Quality (score) .. 67
    DXO Color Depth (bits) .. 22.4
    DXO Dynamic Range (EV) .. 12.3
    DXO Low Light (ISO) .. 495
    Screen Specs Epson R-D1 Sony RX100 III
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.59x
    Viewfinder Resolution 1440k dots
    LCD Framing Live View
    Rear LCD Size 2.0inch 3.0inch
    LCD Resolution 235k dots 1229k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Epson R-D1 Sony RX100 III
    Focus System Manual Focus Contrast-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/2000s 1/2000s
    Continuous Shooting 1 shutter flaps/s 10 shutter flaps/s
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium SDHC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Epson R-D1 Sony RX100 III
    External Flash Hotshoe no Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector no USB USB 2.0
    HDMI Port no HDMI micro HDMI
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Body Specs Epson R-D1 Sony RX100 III
    Battery Type Epson EU-85 Sony NP-BX1
    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)
    102 x 58 x 41 mm
    (4.0 x 2.3 x 1.6 in)
    Camera Weight 620 g (21.9 oz) 290 g (10.2 oz)
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