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2.03.2004
Great article about digital cameras! Digital Secrets: How Spirit Makes Great Photos: "Anyone who has ever agonized over whether to buy a 3-megapixel or 4-megapixel digital camera might be surprised to learn that Spirit's stunningly detailed images of Mars are made with a 1-megapixel model, a palm-sized 9-ounce marvel that would be coveted in any geek's shirt pocket." Go read this article if you are interesting in digital imaging. It helps explain a few things. Namely, how this hoopla about resolution can be deceiving. Many of the cheap five megapixel cameras will actually deliver worse results that better designed three megapixel cameras. The primary reason for this will be lens quality and lens compatibility. The secondary reason will be sensor quality. Any ol' tech company can buy a sensor, a lens and make it record images. And it might even be five megapixels worth. However, unless that sensor sees a clear, bright and accurate image it does you no good. The cardinal rules of good photography still stand; get a good lens and hold the camera steady. Follow those rules and you'll get better pictures. The Rover camera, despite only having one megapixel's worth of sensors actually has larger sensors as well, which are better at receiving light. So it sees better in lower light and it what it sees gets to the sensor more directly. Some cameras simply pack more pixels into an existing chip. No good. | |
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