Q. I am looking for an inexpensive high def (720p is okay) hard drive camcorder with a built in light for low light situations. I already have a nice Sony 1080p camcorder, but I would like a less expensive simple camcorder for more every day type of events. I have heard good things about Flip but none of theirs have a light.
Are there any with a light? Any suggestions?
Are there any with a light? Any suggestions?
A. JVC
In a Camcorder, what exactally does a Megapixle refer to?
Q. I have been working with my 4.0 MP Sony camcorder for a while, but I never understood what exactly is a Megapixel refers to. Is it the number of pixels in a frame? Does it affect the resolution in any way? (My camcorder is a 1080P camcorder) What about quality does it affect?
A. There is an imaging chip in the camera. The imaging chip is made of silicon (among other things). On the imaging chip are pixels. One pixel is the smallest "controllable" point on the imaging chip and basically is that starting point of where the image through the lens is turned into digital information (basically a series of zeroes and ones that indicate whether a pixel should be on or off.
A megapixel is 1 million pixels. Your 4 megapixel camera has 4 million pixels. This is how still image resolution is measured. Other items are used to determine quality - including the amount and type of data compression used.
Video is measured differently. Horizontal row count is the primary method to determine video resolution. The common horizontal row counts are 480 for standard definition, 720 and 1080 for high definition. The amount and type of compression play a huge role.
In either case, lots of data compression means discarding the data and reducing the quality of the image. But there is a benefit to smaller file sizes.
http://en.wikipedia.org/wiki/Pixel
http://en.wikipedia.org/wiki/Megapixel#Megapixel
Because video standards are different from still image standards, the imaging chip is used differently. An increase in (still image) megapixel count does not translate into an increase in video resolution.
As previously indicated, the common horizontal line counts for video are 480, 720 and 1080. Because of the way video is required to display, using aspect ratio and needing to be used on televisions and over various broadcast methods, the vertical columns can be used to arrive at the "pixel count".
640x480=307,200 (or about 1/3 megapixel)
1280x720=921,600 (or almost a megapixel)
1920x1080=2,073,600 (or about 2 megapixels)
There are lots more video standard sizes, but they are more computer monitor related rather than broadcast TV related.
So yes, the megapixels are whats on the chip which makes up the pixel count in the digital still image.
A megapixel is 1 million pixels. Your 4 megapixel camera has 4 million pixels. This is how still image resolution is measured. Other items are used to determine quality - including the amount and type of data compression used.
Video is measured differently. Horizontal row count is the primary method to determine video resolution. The common horizontal row counts are 480 for standard definition, 720 and 1080 for high definition. The amount and type of compression play a huge role.
In either case, lots of data compression means discarding the data and reducing the quality of the image. But there is a benefit to smaller file sizes.
http://en.wikipedia.org/wiki/Pixel
http://en.wikipedia.org/wiki/Megapixel#Megapixel
Because video standards are different from still image standards, the imaging chip is used differently. An increase in (still image) megapixel count does not translate into an increase in video resolution.
As previously indicated, the common horizontal line counts for video are 480, 720 and 1080. Because of the way video is required to display, using aspect ratio and needing to be used on televisions and over various broadcast methods, the vertical columns can be used to arrive at the "pixel count".
640x480=307,200 (or about 1/3 megapixel)
1280x720=921,600 (or almost a megapixel)
1920x1080=2,073,600 (or about 2 megapixels)
There are lots more video standard sizes, but they are more computer monitor related rather than broadcast TV related.
So yes, the megapixels are whats on the chip which makes up the pixel count in the digital still image.
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