Drop an ARW RAW file from your Sony Alpha 550 and get the shutter actuation count in seconds — processed entirely in your browser. The DSLR-A550 stores its shutter count in unencrypted MakerNote tag 0x014a.
Check Shutter Count →The Sony Alpha 550 (DSLR-A550, 2009) was the enthusiast-tier member of Sony's second-generation A-mount DSLR lineup alongside the A500. It paired a 14.2 MP APS-C Exmor CMOS sensor with the BIONZ processor and offered a standout 7 fps continuous burst rate — the fastest in its class at launch. The A550 also featured dual memory card slots (SD and Memory Stick Pro Duo), tilting 3-inch LCD, and in-body Super SteadyShot IBIS. Its improved Exmor sensor delivered noticeably lower noise at ISO 1600 and above compared to the A350 it superseded.
Sony rates the Alpha 550 mechanical shutter at 100,000 actuations. Given its 7 fps burst capability, it is worth checking the count carefully on used bodies that may have seen heavy sports or wildlife use.
| Model | Release | Sensor | Burst | Rated Shutter Life |
|---|---|---|---|---|
| Sony Alpha 550 (DSLR-A550) | 2009 | 14.2 MP APS-C Exmor | 7 fps | 100,000 actuations |
| Sony Alpha 500 (DSLR-A500) (lower-res sibling) | 2009 | 12.3 MP APS-C Exmor | 5 fps | 100,000 actuations |
| Sony Alpha 700 (DSLR-A700) (semi-pro) | 2007 | 12.2 MP APS-C Exmor | 5 fps | 150,000 actuations |
| Actuation Count | % of Rated Life | Assessment |
|---|---|---|
| 0 – 10,000 | 0 – 10 % | Very low use — near new |
| 10,000 – 40,000 | 10 – 40 % | Low to moderate use |
| 40,000 – 75,000 | 40 – 75 % | Moderate to heavy use |
| 75,000 – 95,000 | 75 – 95 % | High use — negotiate price |
| 95,000 + | 95 %+ | Near or past rated life |
Because the A550 offered 7 fps, a single action-sports session could rack up hundreds of frames. Bodies used heavily for motorsport, birds in flight, or sports events may have significantly higher counts than typical hobbyist cameras. Always check the count before purchasing.
The Alpha 550 uses unencrypted Sony MakerNote tag 0x014a for the shutter count — the same tag used across the A100–A580 DSLR series. ShutterCount parses the ARW TIFF structure, locates this tag, and reads the counter directly. No cipher or decryption is involved, unlike the 0x9050 tag introduced on later SLT cameras.
Shutter counts above the 100,000-actuation rating do not mean the camera is broken — rated life is a statistical median, not a hard cutoff. Many A550 bodies continue working well beyond 100,000 actuations. However, at higher counts the risk of shutter failure increases, so factor shutter replacement cost (~$150–250 in parts and labour) into your negotiation.
Yes. Every frame captured in burst mode increments the shutter counter by one. At 7 fps, a 3-second burst adds 21 actuations. Heavy burst use is the primary reason some A550 bodies have high shutter counts despite their age.