Digital Camera Technolohy Untangled

Short Description
Why megapixels are misleading and lenses still matter
1. Every technology has its limits
Digital Point-and-Shoot cameras are pushing the technological envelope so hard that some pundits are predicting the imminent demise of consumer-level Digital SLR cameras. Even $200 digicams (Digital Cameras) produce pictures that delight casual shooters, and fancier models are on offer all the way to $1,000, way past the prices of entry-level DSLRs. Finding your way around the digital camera market is harder than traversing the Scottish moors on a moonless night. This guide is an attempt to create order out of the current chaos.

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Content
The megapixel myth
The megapixel race reminds me of the ghetto blaster wars a couple of decades ago, when the makers of boom boxes tried to outdo each other with ever higher PMPO (Peak Music Power Output) ratings. PMPO is an artificial measurement that has little to do with the real world. Watts expressed in RMS are a better guide but still have little bearing on the quality of the music.
Much the same applies to megapixels in digital cameras, especially the point-andshoot digicams, and yet the race shows no sign of ending. Panasonic’s new Lumix DMC-FX150 and Canon’s Powershot G10 bridge camera go over 14 mp, and Nikon’s P6000 isn’t far behind. Others are joining this pointless competition daily.
Pixels are the tiny specs that make up digital images on a screen, but the term is also used to express the number of image sensor elements of digital cameras. More accurately, digital image sensors use electronic wells to collect photons (units of light). Larger sensors allow larger wells to be used that can capture more photons, improving the dynamic range in the eventual picture.
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