How do I check the shutter count of my Sony Alpha 900?

Take a still photo with your Sony Alpha 900, locate the resulting ARW file, and drop it into shuttercount.app. The tool reads unencrypted MakerNote tag 0x0846 in your browser — no upload, no decryption step needed.

What is the rated shutter life of the Sony Alpha 900?

Sony rates the Alpha 900 (DSLR-A900) shutter at 150,000 actuations. As a professional full-frame body, the A900 was built to handle heavy workloads, though the 150,000 rating was the standard for the era (2008).

How does the Sony Alpha 900 shutter count tag differ from modern Sony cameras?

The Alpha 900 stores its shutter count in unencrypted MakerNote tag 0x0846. Modern Sony cameras (A7 series, A9, A6000+) use encrypted tag 0x9050 with a cubic residue cipher (modulo 249). ShutterCount handles both formats automatically.

Is the Sony Alpha 900 still usable in 2026?

Yes, for A-mount lens owners. The A900's 24.6 MP full-frame sensor still delivers excellent image quality, and its large optical viewfinder (0.74× magnification) is one of the best ever produced. The camera lacks video, Wi-Fi, and modern AF, but produces outstanding still images in the hands of a skilled photographer.

🔒 No upload — 100% local

Sony Alpha 900 Shutter Count:
Check It Free in Your Browser

Q: What is a good shutter count for a used Sony Alpha 900?

For a used Alpha 900: below 20,000 is very low use, 20,000–60,000 is moderate use, 60,000–120,000 is heavy professional use. Above 120,000 means the shutter is approaching or past its rated life — factor in potential replacement cost when negotiating price.

Drop an ARW RAW file from your Sony Alpha 900 and get the shutter actuation count in seconds — processed entirely in your browser. The DSLR-A900 stores its shutter count in unencrypted MakerNote tag 0x0846, readable without any decryption.

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Sony Alpha 900 — Sony's First Full-Frame DSLR

The Sony Alpha 900 (DSLR-A900, 2008) was Sony's first full-frame DSLR and one of the most technically impressive cameras of its era. It features a 24.6 MP full-frame Exmor CMOS sensor — the highest resolution in any 35mm DSLR at the time of its launch — combined with a professional-grade magnesium-alloy body, dust and moisture sealing, a massive 0.74× optical viewfinder (one of the largest ever made), and dual BIONZ processors for fast 5 fps continuous shooting. It positioned directly against the Canon EOS 5D Mark II and Nikon D700.

Sony rates the Alpha 900 shutter at 150,000 actuations.

Model	Release	Sensor	Rated Shutter Life	RAW Format
Sony Alpha 900 (DSLR-A900)	2008	24.6 MP full-frame Exmor	150,000 actuations	ARW
Sony Alpha 850 (DSLR-A850) (budget sibling)	2009	24.6 MP full-frame Exmor	150,000 actuations	ARW
Sony Alpha 700 (DSLR-A700) (APS-C sibling)	2007	12.2 MP APS-C CMOS	150,000 actuations	ARW

    Unencrypted shutter count — tag 0x0846: The Alpha 900 and Alpha 850 share unencrypted MakerNote tag 0x0846 for the shutter count. ShutterCount reads this directly from the ARW file in your browser — no cipher required, unlike the 0x9050 tag used in modern Sony Alpha cameras.
  

How to Check Shutter Count on the Sony Alpha 900

Take any still photo with your Sony Alpha 900 and locate the resulting .ARW file on the CompactFlash memory card.
Open shuttercount.app in any modern browser.
Drag the ARW file onto the drop zone, or click to open a file picker.
The shutter count appears instantly. No upload or account required.

JPEG vs RAW for shutter count verification

Use an ARW RAW file. Sony does not reliably embed the shutter counter in in-camera JPEGs. When evaluating a used A900, always request a fresh ARW from the seller — never rely on a screenshot of the image counter or JPEG EXIF data.

What Is a Good Shutter Count for a Used Sony Alpha 900?

The A900 was a professional body used extensively by portrait, wedding, and landscape photographers. Many units have moderate shutter counts despite being 15+ years old.

Actuation Count	% of Rated Life	Assessment
0 – 15,000	0 – 10 %	Very low use — near new
15,000 – 60,000	10 – 40 %	Low to moderate use
60,000 – 110,000	40 – 73 %	Moderate to heavy use
110,000 – 140,000	73 – 93 %	High use — negotiate price
140,000 +	93 %+	Past or near rated life — budget for shutter service

How Does ShutterCount Read the Alpha 900 Shutter Count?

The Alpha 900 is part of the classic DSLR-A series that predates Sony's encrypted ARW MakerNote format. Its shutter count is stored in unencrypted tag 0x0846 in the Sony MakerNote IFD, which the A900 shares with the Alpha 850 and Alpha 700. ShutterCount parses the ARW TIFF structure, locates tag 0x0846, and reads the 32-bit counter directly — no decryption required.

Sony Alpha 900 — FAQ

How does the Alpha 900 compare to the Alpha 850?

The Alpha 850 (2009) uses the same 24.6 MP full-frame sensor and shares the 150,000-actuation shutter rating but launched at a lower price by removing the top-plate LCD display and reducing burst to 3 fps. Both read shutter count identically from ARW tag 0x0846.

What happened to the Alpha 900 successor?

Sony never released a direct successor to the A900 in the DSLR-A line. Instead, the company pivoted to SLT (translucent mirror) technology with the SLT-A99 (2012) and ultimately to full-frame E-mount with the A7 series (2013). A-mount full-frame ended with the SLT-A99 II (2016).

Can the shutter count be reset on the Sony Alpha 900?

No, not without a hardware shutter replacement performed by a Sony-authorised service centre. Always verify from an original ARW file.

Sony Alpha 900 Shutter Count:Check It Free in Your Browser