Sony Alpha 7

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For the similarly named Sony APS-C format camera, see Sony Alpha NEX-7.
Sony ILCE-7
Sony Alpha ILCE-7 (A7) full-frame camera no body cap.jpg
Type Mirrorless interchangeable lens camera
Sensor 35.8 x 23.9mm Exmor full-frame HD CMOS Sensor
Maximum resolution 6000 x 4000 (3:2) (24 megapixels)[1]
Lens Sony E-mount
Shutter Electronically-controlled, vertical-traverse, focal-plane shutter
Shutter speed range 1/8000 - 30 sec, BULB
Exposure metering Multi-segment, Center-weighted, Spot
Focus modes Contrast Detect (sensor), Phase Detect, Multi-area, Center, Selective single-point, Single, Continuous, Face Detection, Live View
Continuous shooting 5 frame/s
Viewfinder Built-in 2.4 million dots OLED Electronic viewfinder
ASA/ISO range Auto, 100-25600
Rear LCD monitor 3.0 in (76 mm) Tilting XtraFine LCD, 1,230,000 pixels
Storage Memory Stick Pro Duo, Pro-HG Duo, SD, SDHC, SDXC
Battery NP-FW50, InfoLITHIUM, 7.2 V, 1080 mAh, 7.7 Wh, Lithium-Ion rechargeable battery
Dimensions 127 x 94 x 48 mm
Weight Approx. 474 g (16.7 oz) (camera body, card and battery)

The Sony ILCE-7, ILCE-7R and ILCE-7S (α7/α7R/α7S) are three closely related digital cameras announced 16 October 2013[2] and 6 April 2014. They are Sony’s first full-frame mirrorless interchangeable lens cameras and share the E-mount with the company’s smaller sensor NEX series. They are targeted at experienced users, enthusiasts and professionals.[3]

Sony's new model naming prefix strives to unify model names. “ILC” indicates Interchangeable Lens Camera followed by an indicator of A-mount “A” or E-mount “E”[4]

The products are more commonly known as the α7, α7R and α7S. Pre-announcement rumours speculated that the new camera would be named Sony NEX-9.[5]

Although the α7 and α7R use full frame sensors and have a DSLR-shaped design, their sizes and weights are less than Olympus OM-D E-M1 with its small micro four thirds sensor and can also be compared with the lightest Fullframe DSLR.[6] Compared to the smallest and lightest APS-C DSLR Canon EOS 100D, the α7 is 67 grams heavier and a bit larger, but the thickness is only two thirds of Canon's.[7] The α7 price is significant lower than a comparative Fullframe DSLR price, but still higher than that of a low or mid-end compact camera price.[8] Compared to the Nikon D800E, the weight of Sony α7R is only about a half and the price is about two-thirds, a maximum image quality in a compact body, but lacks of built-in stabilization, slower Single AF and Continuous AF, and has no built-in flash.[9]

Variations[edit]

There are three different types of cameras available in the α7-series. They are the α7, α7R and α7S.

The 'R' model is the "resolution" version of the series with a new, higher-density sensor design, and priced $600 more than the α7 at launch, but has no optical low-pass filter as the sibling has. However, the α7R does not include the faster hybrid auto-focus system found on the lower-resolution model.

The 'S' model is a high sensitivity version of the series with an effective ISO range from 100 to 409600 and with 4K video capability.

Model differences[edit]

Model α7 α7R α7S
Product standing Perfection
w/ High Dynamic range
High Resolution
w/ High Color depth
High Sensitivity
w/ Video production
Body material Magnesium alloy and polycarbonate Full magnesium alloy Full magnesium alloy chassis
and stainless steel bayonet mount.
CMOS Sensor 24.3 megapixel Exmor 36.4 megapixel Exmor 12.2 megapixel Exmor
Maximum image size 6,000 x 4,000 pixels 7,360 x 4,912 pixels 4,240 x 2,832 pixels
Sensitvity Range Expanded ISO 50 - 25600
(100 - 51200 at multi frame NR)
Expanded ISO 50 - 25600
(100 - 51200 at multi frame NR)
Expanded ISO 50 - 409600
Autofocus 25 point contrast-detection
w/ 117 points phase-detection
25 point contrast-detection 25 point contrast-detection
(works down to -4 EV)
Maximum flash sync speed 1/250 1/160 1/250
Continuous drive 5 fps max speed.
(w/ Predictive continuous AF)
4 fps max speed. 5 fps max speed.
Video record format MPEG-4, AVCHD (28mbps) Full HD MPEG-4, AVCHD (28mbps) Full HD MPEG-4, AVCHD (28mbps) Full HD
XAVC S (50mbps) Full HD
Video sampling Line skipping Line skipping Full-pixel readout
Slow motion video record No No Yes (720p, 120fps)
Electronic first curtain shutter Yes No Yes
Silent shutter mode No No Yes
HDMI Output 4K still and Full HD video 4K still and Full HD video 4K still and 4K video
Other features Fast Hybrid autofocus system No optical Low-pass filter Professional video workflow
w/ Picture Profile, S-Log2, time code

Features (universal for α7-series)[edit]

  • Exmor APS HD CMOS full frame sensor (With different megapixels depending on camera version)
  • TruBlack XtraFine LCD screen (3"/ 7,5 cm) with 921.6K dots resolution with tilt functionality.
  • 1.3 cm (0.5inch) Electronic Viewfinder.
  • 1200-zone evaluative light metering.
  • Built-in Wi-Fi and NFC.
  • LED-auto focus illuminator.
  • Multi Interface Shoe.
  • 9 customizable buttons and 45 assignable functions.

Reception[edit]

The cameras received positive reception from the critics. DxOMark crowned the α7R as the highest full frame with sensor quality by a mirrorless camera with the score of 95 and has same score with Nikon D800, but one point behind of Nikon D800E,[10] while the α7 has score of 90 and better than Nikon Df, Nikon D4 professional DSLR camera and Sony SLT-A99.[11] The Verge rated the cameras 8.3 out of 10 commenting that "It might be a few years before we realize it, but when the DSLR is relegated to a niche status among specialty photographers and full-frame mirrorless cameras dominate the market, we’ll have the α7s to thank as the cameras that started it all."[12] EPhotozine which rated the α7 rated 5 stars, meanwhile praised the α7's price for being "the cheapest full-frame digital cameras currently available" while being lighter and smaller than comparable cameras.[13] It awarded the α7 as the "Camera of the Year."[14] The α7R was awarded by Imaging Resource as the "Camera of the Year".[15]

References[edit]