Canon Powershot a540

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The Canon Powershot A540 is a compact digital camera released in 2004 under Canon's Powershot series. It features a 5.0-megapixel CCD sensor capable of capturing images at a maximum resolution of 2592 x 1944 pixels. The camera includes a 4x optical zoom lens with a focal length range of 5.8–23.2 mm, equivalent to 35–140 mm in 35mm format. It supports multiple shooting modes such as Program AE, Manual, Aperture Priority, and Shutter Priority, providing versatile control options. The camera uses a 1.8-inch color TFT LCD to preview and review photos. Connectivity options include USB 1.1 for image transfer, and storage is provided via SD and MMC memory cards. Power is supplied by four AA batteries, making it convenient for travel without proprietary battery requirements.

The Canon Powershot A540 provides high image resolution with a 5.0 MP sensor suitable for everyday photography needs. Its 4x optical zoom allows users to capture subjects at diverse distances effectively. Manual control options offer creative flexibility uncommon in entry-level models. The inclusion of a 1.8-inch LCD screen aids in easy image composition and review. The camera’s compatibility with widely available AA batteries makes replacement and power management simple. Additionally, a straightforward user interface and compact design enhance portability and usability for amateurs and hobbyists.

The Canon Powershot A540's 1.8-inch LCD may be relatively small compared to modern cameras, limiting detailed image preview. It lacks advanced features such as video recording or live view functionality common in newer models. The camera’s USB 1.1 interface limits data transfer speed. Low light performance is modest due to the sensor and lens specifications, and there is no image stabilization feature. Additionally, the camera does not support RAW image format, restricting post-processing flexibility. Lastly, the use of AA batteries can add weight and require frequent replacement compared to proprietary rechargeable Li-ion batteries.

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