Sony Alpha 7S vs Epson R-D1

In this comparison, we will evaluate the Sony Alpha 7S and the Epson R-D1, highlighting the advantages of each over the other, discussing their pros and cons, shared strengths and weaknesses, and providing a rating based on their available features and specifications to assist you in choosing the one that best suits your needs.

Sony Alpha 7S was introduced in April 2014 and Epson R-D1 was introduced in March 2004. Let us first list highlights of the models.

Now that we've looked at the most essential specifications and gained a basic understanding of these cameras, we can delve into more details and see the differences between them.

This section shows those features and specifications which are the reason to choose Sony Alpha 7S over Epson R-D1.

We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

Screen

Sony Alpha 7S has a 3.0" Tilting screen with 1,230k dot resolution and Epson R-D1 has a 2.0" Fixed screen with 235k dot resolution. Tilting screen makes Sony Alpha 7S very useful for photography purposes but not so useful for video shooting.

Viewfinder

Sony Alpha 7S has a built-in Electronic viewfinder with 2,359k dot resolution and Epson R-D1 has a built-in Optical (rangefinder) viewfinder. Sony Alpha 7S has 100% coverage with 0.71x magnification and magnification.

Sony Alpha 7S features a 12.2 megapixel Full Frame CMOS sensor with dimensions of 35.8 x 23.9 mm and a total area of 855.6 mm². Its native ISO range is 100 - 409,600. Epson R-D1 features a 6 megapixel APS-C CCD sensor with dimensions of 23.7 x 15.6 mm and a total area of 243.4 mm². Its native ISO range is 200 - 1,600.

Here is a sensor size comparison chart where you can see how different sensors compare with each other:

Sensor size chart

	Sensor	Dimensions	Area	Aspect Ratio	Crop Factor
	Medium Format	44 x 33 mm	1452 mm2	4:3	0.79x
	Full Frame	36 x 24 mm	864 mm2	3:2	1x
	APS-H	27 x 18 mm	486 mm2	3:2	1.3x
	APS-C	23.6 x 15.6 mm	368.2 mm2	3:2	1.5x
	APS-C (Canon)	22.3 x 14.9 mm	332.3 mm2	3:2	1.6x
	Micro Four Thirds	17.4 x 13 mm	226.2 mm2	4:3	2x
	1-inch	13.2 x 8.8 mm	116.2 mm2	3:2	2.7x
	1/1.7-inch	7.44 x 5.58 mm	41.5 mm2	4:3	4.7x
	1/2.3-inch	6.17 x 4.55 mm	28.1 mm2	4:3	5.6x

Sony Alpha 7S is equipped with BIONZ X processor and can take pictures up to 4240 x 2832 resolution. It can also take pictures with lower resolution like 4240 x 2384, 2768 x 1848, 2768 x 1560, 2128 x 1416, 2128 x 1200, 1376 x 920, 1376 x 776 with 3:2, 16:9 aspect ratios. Epson R-D1 can take pictures up to 3008 x 2000 resolution. It can also take pictures with lower resolution like 2240 x 1488 with 3:2 aspect ratios.

Lens Mount

Sony Alpha 7S has Sony E lens mount and Epson R-D1 has Leica M lens mount. Due to Full Frame sensor in Sony Alpha 7S its crop factor is equal to 1x, this means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length. Due to APS-C sensor in Epson R-D1 its crop factor is equal to 1.5x, this means that a 35mm equivalent focal length of the mounted lens will be equal to its actual focal length times 1.5.

No Image Stabilization

The cameras do not have image stabilization. On Sony Alpha 7S it means that you need lenses with optical image stabilization for vibration reduction. As for Epson R-D1 nothing can be done. On Epson R-D1 it means that you need lenses with optical image stabilization for vibration reduction. As for Sony Alpha 7S nothing can be done.

Built-in Wi-Fi on Sony Alpha 7S

Sony Alpha 7S has a built-in Wi-Fi which allows to easily transfer photos and videos from the camera to other Wi-Fi-enabled devices, such as smartphones, tablets, printers, or computers. This eliminates the need for cables and allows for quick and convenient media sharing and social media integration. It gives you the ability to control your camera remotely using a smartphone or tablet. This is particularly useful for taking self-portraits, group shots, or capturing images in challenging conditions without having to touch the camera. Firmware updates can also be downloaded and installed wirelessly.
  Check out the cameras in our database that have built-in WiFi.

NFC on Sony Alpha 7S

Sony Alpha 7S has Near Field Communication (NFC) technology which simplifies the process of pairing it with other NFC-enabled devices like smartphones or tablets. It allows to quickly transfer photos and videos or remotely control the camera from compatible device. NFC can also be used for authentication and security purposes. It can verify your identity before accessing certain features or transferring sensitive data. It can be used with NFC-enabled accessories as well, such as lenses, flashes and GPS devices.

USB Inputs and HDMI Outputs

Sony Alpha 7S has a USB 2.0 (480 Mbit/sec) input for data transfer. connector for video signal output.

Battery

Sony Alpha 7S comes with NP-FW50 battery pack with battery life of 360 shots.

External Storage Slots

Sony Alpha 7S has a single SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I) card slot. Epson R-D1 has a single SD card slot.

Shutter

Sony Alpha 7S has Electronically controlled Vertical-traverse Focal-plane shutter. Shutter speed can go up to 1/8000 sec on Sony Alpha 7S, and up to 1/2000 sec on Epson R-D1. Sony Alpha 7S can shoot continuously up to 5.0 fps.

Focusing

Sony Alpha 7S has Contrast-detection AF system with 25 focusing points and Epson R-D1 has . Sony Alpha 7S has detection range from -4 to +20 EV.

Exposure

Exposure meterings of Sony Alpha 7S ranges from +3 to +20 EV and you can set the exposure compensation within the ±5 EV range on Sony Alpha 7S and ±2 EV range on Epson R-D1. You can also do exposure lock, exposure bracketing and manual exposure adjustment on Sony Alpha 7S and and manual exposure adjustment on Epson R-D1.

Flash

Cameras have no built-in flash but an external flash may be connected to both of them via Hot Shoe or Proprietary to Sony Alpha 7S. The fastest flash synchronization speed is 1/250 sec on Sony Alpha 7S.

Sony Alpha 7S body has dimensions of 127 x 94 x 48 mm (5 x 3.7 x 1.89") and Epson R-D1 body has dimensions of 142 x 89 x 40 mm (5.59 x 3.5 x 1.57"). Sony Alpha 7S weighs 489 g (1.08 lb / 17.25 oz) and Epson R-D1 weighs 620 g (1.37 lb / 21.87 oz).

Sony Alpha 7S

Epson R-D1

127 mm

94 mm

142 mm

89 mm