Epson R-D1 vs Sony NEX-7
The Epson R-D1 and the Sony Alpha NEX-7 are two enthusiast cameras that were announced, respectively, in March 2004 and August 2011. The R-D1 is a rangefinder-focusing mirrorless, while the NEX-7 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The Epson has a resolution of 6 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Epson R-D1 and the Sony Alpha NEX-7? 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.
The physical size and weight of the Epson R-D1 and the Sony NEX-7 are illustrated 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 width, height and depth measures are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony NEX-7 is considerably smaller (36 percent) than the Epson R-D1. Moreover, the NEX-7 is substantially lighter (35 percent) than the R-D1. In this context, it is worth noting that neither the R-D1 nor the NEX-7 are weather-sealed.
The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can compare the optics available for the two cameras in the Leica M Lens Catalog (R-D1) and the Sony E-Mount Lens Catalog (NEX-7).
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.
|1.||Epson R-D1||142 mm||89 mm||40 mm||620 g||..||n||Mar 2004||2,999|
|2.||Sony NEX-7||120 mm||67 mm||43 mm||400 g||430||n||Aug 2011||1,349|
|3.||Canon Rebel||142 mm||99 mm||72 mm||649 g||400||n||Aug 2003||899|
|4.||Fujifilm X100||126 mm||75 mm||54 mm||445 g||300||n||Sep 2010||1,199|
|5.||Leica CL||131 mm||78 mm||45 mm||403 g||220||n||Nov 2017||2,795|
|6.||Leica M10||139 mm||80 mm||39 mm||660 g||210||Y||Jan 2017||6,595|
|7.||Leica X-U Typ 113||140 mm||79 mm||88 mm||635 g||450||Y||Jan 2016||2,950|
|8.||Leica X Vario||133 mm||73 mm||95 mm||680 g||450||n||Jun 2013||2,850|
|9.||Leica M9||139 mm||80 mm||37 mm||585 g||..||n||Sep 2009||7,999|
|10.||Nikon D40||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499|
|11.||Nikon D50||133 mm||102 mm||76 mm||620 g||400||n||Apr 2005||749|
|12.||Nikon D70s||140 mm||111 mm||78 mm||679 g||500||n||Apr 2005||899|
|13.||Nikon D70||140 mm||111 mm||78 mm||679 g||400||n||Jan 2004||999|
|14.||Sony A6400||120 mm||67 mm||50 mm||403 g||410||Y||Jan 2019||899|
|15.||Sony A6000||120 mm||67 mm||45 mm||344 g||360||n||Feb 2014||599|
|16.||Sony A3000||128 mm||91 mm||85 mm||411 g||470||n||Aug 2013||329|
|17.||Sony RX1||113 mm||65 mm||70 mm||482 g||270||n||Sep 2012||2,799|
|Notes: 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 manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The NEX-7 was launched at a markedly lower price (by 55 percent) than the R-D1, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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.
The size of the sensor inside a digital camera is one of the key determinants 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. 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 associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the NEX-7 is 1 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the NEX-7 offers a higher resolution of 24 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 3.90μm versus 7.85μm for the R-D1). However, it should be noted that the NEX-7 is much more recent (by 7 years and 5 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 NEX-7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the NEX-7 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 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 Alpha NEX-7 are ISO 100 to ISO 16000 (no boost).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|6.||Leica M10||Full Frame||23.8||5952||3992||none||24.4||13.2||2133||86|
|7.||Leica X-U Typ 113||APS-C||16.1||4928||3264||1080/30p||23.8||13.0||1614||80|
|8.||Leica X Vario||APS-C||16.1||4928||3272||1080/30p||23.4||12.7||1320||78|
|9.||Leica M9||Full Frame||18.1||5212||3472||none||22.5||11.7||884||69|
|17.||Sony RX1||Full Frame||24.0||6000||4000||1080/60p||25.1||14.3||2534||93|
|Note: DXO values in italics represent estimates based on sensor size and age.|
Many modern cameras cannot only take still pictures, but also record videos. The NEX-7 indeed provides for movie recording, while the R-D1 does not. The highest resolution format that the NEX-7 can use is 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the NEX-7 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 table below summarizes some of the other core capabilities of the Epson R-D1 and Sony NEX-7 in connection with corresponding information for a sample of similar cameras.
|1.||Epson R-D1||optical||n||2.0 / 235||fixed||n||1/2000s||1.0||n||n|
|2.||Sony NEX-7||2359||n||3.0 / 921||tilting||n||1/4000s||10.0||Y||n|
|3.||Canon Rebel||optical||n||1.8 / 118||fixed||n||1/4000s||2.5||Y||n|
|4.||Fujifilm X100||1440||n||2.8 / 460||fixed||n||1/4000s||5.0||Y||n|
|5.||Leica CL||2360||Y||3.0 / 1040||fixed||Y||1/8000s||10.0||n||n|
|6.||Leica M10||optical||n||3.0 / 1037||fixed||n||1/4000s||5.0||n||n|
|7.||Leica X-U Typ 113||optional||n||3.0 / 920||fixed||n||1/2000s||5.0||Y||n|
|8.||Leica X Vario||optional||n||3.0 / 920||fixed||n||1/2000s||5.0||Y||n|
|9.||Leica M9||optical||n||2.5 / 230||fixed||n||1/4000s||2.0||n||n|
|10.||Nikon D40||optical||n||2.5 / 230||fixed||n||1/4000s||2.5||Y||n|
|11.||Nikon D50||optical||n||2.0 / 130||fixed||n||1/4000s||2.5||Y||n|
|12.||Nikon D70s||optical||n||2.0 / 130||fixed||n||1/8000s||3.0||Y||n|
|13.||Nikon D70||optical||n||1.8 / 130||fixed||n||1/8000s||3.0||Y||n|
|14.||Sony A6400||2359||n||3.0 / 922||tilting||Y||1/4000s||11.0||Y||n|
|15.||Sony A6000||1440||n||3.0 / 922||tilting||n||1/4000s||11.0||Y||n|
|16.||Sony A3000||202||n||3.0 / 230||fixed||n||1/4000s||2.5||Y||n|
|17.||Sony RX1||optional||n||3.0 / 1229||fixed||n||1/4000s||5.0||Y||n|
One difference between the cameras concerns the presence of an on-board flash. The NEX-7 has one, while the R-D1 does not. While the built-in flash of the NEX-7 is not very powerful, it can at times be useful as a fill-in light.
The R-D1 writes its imaging data to SDHC cards, while the NEX-7 uses SDXC or Memory Stick PRO Duo cards.
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 Alpha NEX-7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Epson R-D1||Y||- / -||-||-||-||-||-||-||-|
|2.||Sony NEX-7||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
|3.||Canon Rebel||Y||- / -||-||-||-||1.1||-||-||-|
|4.||Fujifilm X100||Y||stereo / -||-||-||mini||2.0||-||-||-|
|5.||Leica CL||Y||stereo / mono||-||-||-||-||Y||-||-|
|6.||Leica M10||Y||- / -||-||-||-||-||Y||-||-|
|7.||Leica X-U Typ 113||Y||stereo / mono||-||-||-||2.0||-||-||-|
|8.||Leica X Vario||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|9.||Leica M9||Y||- / -||-||-||-||2.0||-||-||-|
|10.||Nikon D40||Y||- / -||-||-||-||2.0||-||-||-|
|11.||Nikon D50||Y||- / -||-||-||-||2.0||-||-||-|
|12.||Nikon D70s||Y||- / -||-||-||-||2.0||-||-||-|
|13.||Nikon D70||Y||- / -||-||-||-||1.0||-||-||-|
|14.||Sony A6400||Y||stereo / mono||Y||-||micro||2.0||Y||Y||Y|
|15.||Sony A6000||Y||stereo / mono||-||-||micro||2.0||Y||Y||-|
|16.||Sony A3000||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|17.||Sony RX1||Y||stereo / mono||Y||-||mini||2.0||-||-||-|
Studio photographers will appreciate that the Epson R-D1 (unlike the NEX-7) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the R-D1 and the NEX-7 have been discontinued, but can regularly be found used on eBay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Epson and Sony. 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.
So what conclusions can be drawn? Which of the two cameras – the Epson R-D1 or the Sony NEX-7 – has the upper hand? Is one clearly better than the other? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Epson R-D1:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- 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).
Advantages of the Sony Alpha NEX-7:
- More detail: Has more megapixels (24 vs 6MP), which boosts linear resolution by 100%.
- Broader imaging potential: Can capture not only stills but also 1080/60i 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 (921k vs 235k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 1 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (120x67mm vs 142x89mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 220g or 35 percent) and is thus easier to take along.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (55 percent cheaper at launch).
- More modern: Reflects 7 years and 5 months of technical progress since the R-D1 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the NEX-7 is the clear winner of the contest (13 : 3 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.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the R-D1 or the NEX-7. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is where reviews by experts come in. 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.
|1.||Epson R-D1||..||..||..||..||..||..||Mar 2004||2,999|
|2.||Sony NEX-7||5/5||+ +||..||81/100||4.5/5||5/5||Aug 2011||1,349|
|3.||Canon Rebel||..||..||..||+ +||..||..||Aug 2003||899|
|4.||Fujifilm X100||3/5||..||..||75/100||4/5||5/5||Sep 2010||1,199|
|5.||Leica CL||..||..||4.2/5||..||..||4/5||Nov 2017||2,795|
|6.||Leica M10||4.5/5||..||..||..||4/5||4.5/5||Jan 2017||6,595|
|7.||Leica X-U Typ 113||3.5/5||..||..||..||..||3.5/5||Jan 2016||2,950|
|8.||Leica X Vario||3/5||..||..||..||4/5||4/5||Jun 2013||2,850|
|9.||Leica M9||..||..||..||..||4.5/5||..||Sep 2009||7,999|
|10.||Nikon D40||..||81/100||..||+ +||o||4.5/5||Nov 2006||499|
|11.||Nikon D50||..||78/100||..||+ +||4/5||4.5/5||Apr 2005||749|
|12.||Nikon D70s||..||..||..||..||..||5/5||Apr 2005||899|
|13.||Nikon D70||..||..||..||+ +||..||..||Jan 2004||999|
|14.||Sony A6400||4/5||+||4/5||85/100||4.5/5||4/5||Jan 2019||899|
|15.||Sony A6000||5/5||+||4.5/5||80/100||4.5/5||5/5||Feb 2014||599|
|16.||Sony A3000||3/5||+||..||..||4/5||4/5||Aug 2013||329|
|17.||Sony RX1||5/5||..||..||79/100||4/5||4.5/5||Sep 2012||2,799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted with care, 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
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Specifications: Epson R-D1 vs Sony NEX-7
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 Model||Epson R-D1||Sony NEX-7|
|Camera Type||Rangefinder camera||Mirrorless system camera|
|Camera Lens||Leica M mount lenses||Sony E mount lenses|
|Launch Date||March 2004||August 2011|
|Launch Price||USD 2,999||USD 1,349|
|Sensor Specs||Epson R-D1||Sony NEX-7|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.7 x 15.6 mm||23.4 x 15.6 mm|
|Sensor Area||369.72 mm2||365.04 mm2|
|Sensor Diagonal||28.4 mm||28.1 mm|
|Sensor Resolution||6 Megapixels||24 Megapixels|
|Image Resolution||3008 x 2000 pixels||6000 x 4000 pixels|
|Pixel Pitch||7.85 μm||3.90 μm|
|Pixel Density||1.63 MP/cm2||6.57 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||200 - 1,600 ISO||100 - 16,000 ISO|
|DXO Sensor Quality (score)||..||81|
|DXO Color Depth (bits)||..||24.1|
|DXO Dynamic Range (EV)||..||13.4|
|DXO Low Light (ISO)||..||1016|
|Screen Specs||Epson R-D1||Sony NEX-7|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2359k dots|
|LCD Framing||Live View|
|Rear LCD Size||2.0inch||3.0inch|
|LCD Resolution||235k dots||921k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Epson R-D1||Sony NEX-7|
|Focus System||Manual Focus||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/2000s||1/4000s|
|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|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||no|
|Connectivity Specs||Epson R-D1||Sony NEX-7|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||no USB||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Epson R-D1||Sony NEX-7|
142 x 89 x 40 mm
(5.6 x 3.5 x 1.6 in)
120 x 67 x 43 mm
(4.7 x 2.6 x 1.7 in)
|Camera Weight||620 g (21.9 oz)||400 g (14.1 oz)|
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