Canon's 2007 low-end A-series compact — 7.1MP CCD, 35-140mm 4x zoom, AA batteries, SDHC support
The PowerShot A550 was announced in January 2007 with the A450 and A560 as the low-end model of Canon's A5xx compact line, reaching shops that March. It followed the A5xx trend of trimming the manual controls and conversion-lens support that earlier mid-range A-series bodies offered.
It combined a 7.1-megapixel 1/2.5-inch CCD with a 35-140mm-equivalent 4x zoom at f/2.6-5.5. The 2.0-inch LCD carried 86,000 dots, video recorded at 640x480 and 30fps, and files wrote to SD, SDHC or MMC cards. Two AA batteries powered the compact 160g body.
It suits beginners and students after a simple, cheap CCD compact with a useful 4x zoom range. There are no full manual exposure modes, so it rewards point-and-shoot use; the chunky grip and AA power make it a practical knockabout camera rather than a pocket jewel.
AA cells keep it running without proprietary chargers, but inspect the battery bay for leak corrosion. The low-resolution screen scratches easily, so check it in good light, cycle the zoom for lens errors, and shoot a test frame to confirm the ageing CCD is free of streaks or dead columns.