Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM | C - unknown Mount

The Sigma 18-200mm f/3.5-6.3 DC Macro OS HSM | Contemporary is a modern, compact superzoom designed for APS-C DSLRs. Featuring Optical Stabilisation (OS) and a Hyper Sonic Motor (HSM), it provides quiet, steady shooting across a broad 11x zoom range. Part of the Contemporary line, it uses Thermally Stable Composite (TSC) material to reduce weight and size while maintaining high optical performance. Check for the smooth operation of the OS system; a slight hum is normal, but jumping in the viewfinder may indicate a fault. SDS tests the zoom lock switch to ensure it holds the barrel securely when retracted. As this lens draws air during zooming, we check for internal debris that might have been pulled into the rear groups over time.