Sony Alpha 850


The α850 (DSLR-A850) was Sony's second full-frame digital SLR, introduced on 27 August 2009. Similar to the DSLR-A900, the camera featured the same 24.6-megapixel full-frame CMOS sensor used in the a900. On 8 June 2011, Sony pre-announced the camera's end of production in July/August 2011.

Sony α850
TypeSingle-lens reflex
LensSony mount; compatible with Minolta A-type bayonet mount. Sony α lens and Konica Minolta α/Maxxum/Dynax lens[note 1]
Sensor35.8 mm × 23.9 mm Exmor CMOS sensor
Maximum resolution24.6 megapixels
Storage mediaMemory Stick: Memory Stick Duo, Memory Stick PRO Duo,

Memory Stick PRO-HG Duo

Compact Flash Type I, Type II (Microdrive), UDMA (Mode 5) compliant
  • Manual, and
  • AF Modes : Single-shot AF, Automatic AF, Continuous AF, (AF/MF selectable)
Focus modesdual-cross 9 point AF w/10 assist points, center AF w/2.8 sensor
Focus areasWide (Auto, up to 9 areas), Spot, Local (9 local areas selectable) [1]
Exposure modesMode: Auto, Program Auto (P, with program shift), Aperture priority (A), Shutter priority (S), Manual (M)
Exposure metering
  • Type: TTL metering
  • Cell: 40-segment honeycomb-pattern SPC
  • Range: 0 EV to 20 EV (+2 EV to +20 EV with spot metering)

(at ISO 100 equivalent with F1.4 lens)

  • Mode: Multi segment, Spot, Centre weighted
Frame rate3
ShutterElectronically-controlled, vertical-traverse, focal-plane type
Shutter speed range1/8000 sec. – 30 sec., bulb, 1/250 sec. (SteadyShot off), 1/200 sec. (SteadyShot on), maximum burst of 3 frames per second.
ViewfinderFixed eye-level system with optical glass type pentaprism, approximately 98%
LCD screen3.0", 921k pixels, 100% coverage
AV Port(s)HDMI
Data Port(s)USB 2.0
Body features
  • Magnesium Alloy body
  • weather & dust resistant uses rubber seals
Weight850g (bare body)
Made inJapan

The camera was almost exactly the same as the DSLR-A900, but the viewfinder coverage was dropped to 98% with 0.74× magnification and the burst rate was reduced to 3 frames per second.


  1. ^ Sony's DT series lenses are not recommended for use with 35mm full-frame sensors due to their differing image circle size, which may affect light metering accuracy in certain shooting situations.


  1. ^ "DSLR-A850 | Sony α850 DSLR Camera Body". Sonystyle. Retrieved 29 January 2011.


External linksEdit

  • Sony press release