Steve’sDigicams has reviewed the Canon PowerShot A540, a 6.0 megapixels (CCD sensor) point-and-shoot digital camera featuring 4x Optical Zoom lens (35-140mm equivalent) and a 2.5″ LCD screen.
“When it comes to image quality, Canon’s models are almost always at the top. And, the A540 is no exception. We were very pleased with its Large SuperFine 6-megapixel images. Our sample images were sharp, well exposed, and showed accurate color balance. As you can see from our kayak shots, the exposure system of this model does an excellent job of capturing sky detail. Imager noise is an issue we touch with just about every model we test, and the A540 showed very little, if any, when using ISO 80 and 100. As the ISO sensitivity is increased, so does the noise; a common problem with almost all consumer cameras. Unlike the usual cut off at ISO 400, the A540 (and 530) allow you to use an ISO speed as high as 800. This will allow the use of higher shutter speeds in marginal lighting conditions, which helps reduce the effects of camera shake (blurring.) While noise levels are very noticeable at ISO 400 and 800, I still feel the usefulness of being able to capture images when you just can’t use the flash is much more important. Sure you don’t want to make large prints with these images, but your typical 4×6’s will still be usable.”