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Sony Alpha 850

digital SLR camera with full-frame sensor from Sony

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 11, 2025
Entity authorityQ1130213 ↗
Source-derived summary

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.

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.

Editorial summary

“Sony Alpha 850” enters the record as digital SLR camera with full-frame sensor from Sony. Crown Archives preserves that source wording while asking what Sony, Alpha and digital can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current lead gives the account dated anchors—2009, 2011—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Sony, Alpha and digital.
Editorial analysis

Why this record matters

“Sony Alpha 850” is worth following because a concise public description often conceals a longer documentary argument. Here, Sony, Alpha and digital provides the most credible route into that argument.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 11, 2025. The linked authority identifier is Q1130213. The first chronological checks are 2009 and 2011.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Sony Alpha 850”, its source revision and the description used here.
  2. Expand the search: follow Sony Alpha 850 primary sources, Sony Alpha 850 archive and Sony research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Sony Alpha 850”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
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Source & attribution

This entry incorporates text from “Sony Alpha 850” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.