Having an adjustable shutter speed function gives a camera the ability to controls the amount of light let into the camera during a photo as well as the motion blur of a photo. High shutter speeds will stop motion where as low shutter speeds will create blur. There are a number of digital cameras on the market that allow the user to change the shutter speed. Most of them are DSLR (Digital Single Lens Reflex) cameras, but there are point-and-shoot models available as well.
The Nikon D3x is a professional DSLR camera released by Nikon. It is highly rated among DSLRs due to its high picture quality and ability to take solid photos in situations where it might be impossible with other DSLR cameras. However, a considerable drawback of this camera is the price tag. Typically a D3x will cost about $7000 for the camera body alone. While this may not be an issue for some professional photographers, the average photography enthusiast typically will not spend that much on a camera.
A cheaper alternative to the Nikon D3x is the Nikon D90. It is a fraction of the cost of the D3x, but takes comparable images. It has a smaller body and simpler features than the D3x, making it a more friendly option for many photographers. Because of the difference in camera class, the D90 will not pack quite the same amount of power as the D3x, but will still turn out stellar results for those who know how to operate a DSLR properly.
The Canon 50D is another top of the line DSLR. It offers full manual functions and is versatile enough that amateurs and pros alike can get good mileage out of it. It is often compared to the D90, and the purchase decision will typically come down to the user's personal preference for Canon or Nikon.
The Panasonic Lumix is a point-and-shoot camera that offers many of the manual features found on a DSLR. It allows the user to change the shutter speed, which is not a standard trait of all point-and-shoot cameras. It has the advantage of being much more portable than a DSLR while still producing fairly high-quality images. The response times may not be as quick as that of a DSLR, but it is a good choice for a grab-and-go camera.
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