Antar O
but does having more mp make the video quality better? or it doesn't matter?
Answer
Interpolation. The output does not really have the 1280x720 resolution, it is just in the 720p format.
If you look at the detailed camcorder reviews at e.g. camcorderinfo.com you will find that this is nothing new. Most consumer "HD" camcorders, when resolution is actually measured (by pointing the camera at a test chart and seeing how many lines can be resolved in the resulting recording), do not come close to the possible resolution of the format.
Edit - added: Some misinformation posted here by others needs correcting.
1. "720p" refers to 1280x720, not 1024x768. 1280x720 = 921,600 pixels. 1024x768 is called "XGA", not "720p".
2. 921,600 pixels is 0.9 megapixels. The "mega = 1,048,576" conversion is ONLY properly used for RAM. For example, a "100 megabit" Ethernet connection runs at 100,000,000 bits/second. A "500 GB" hard drive has 500,000,000,000 bytes. Similarly a "1 megapixel" image has 1,000,000 pixels.
3. In video formats expressed as e.g. 720p, you do not take anything away for "invisible sync info." You don't do even do that for SD when it's quoted as "480i". All 480 scan lines are visible picture info. Yes, there is invisible sync info in NTSC, PAL, etc., formatted video, but for ex. in NTSC this is how you get from 480 to 525 scan lines; the sync info is in the extra 45 scan lines. Similarly in HD formats, "720p" means 720 *visible* pixels on the vertical dimention, , just as there are 768 visible pixels vertically in XGA. Now, sync info must of course be sent to the display, and this does take time - but there are still 720 visible lines. So there is no "7 percent less" to allow for sync info.
Edit2 - added: I have the answer!
The sensor actually is 1280x720 pixels, so it can create 720p video, no problem. That is a 16:9 format.
But still pictures... most still camera take 4:3 pictures, and the iPod's camera does the same. A 4:3 picture with 720 pixels vertically is 960x720. That's 691,200 pixels, or 0.7 megapixels.
So it doesn't have a 0.7 mP sensor at all. They just only use 0.7 mP of it for still pictures.
Interpolation. The output does not really have the 1280x720 resolution, it is just in the 720p format.
If you look at the detailed camcorder reviews at e.g. camcorderinfo.com you will find that this is nothing new. Most consumer "HD" camcorders, when resolution is actually measured (by pointing the camera at a test chart and seeing how many lines can be resolved in the resulting recording), do not come close to the possible resolution of the format.
Edit - added: Some misinformation posted here by others needs correcting.
1. "720p" refers to 1280x720, not 1024x768. 1280x720 = 921,600 pixels. 1024x768 is called "XGA", not "720p".
2. 921,600 pixels is 0.9 megapixels. The "mega = 1,048,576" conversion is ONLY properly used for RAM. For example, a "100 megabit" Ethernet connection runs at 100,000,000 bits/second. A "500 GB" hard drive has 500,000,000,000 bytes. Similarly a "1 megapixel" image has 1,000,000 pixels.
3. In video formats expressed as e.g. 720p, you do not take anything away for "invisible sync info." You don't do even do that for SD when it's quoted as "480i". All 480 scan lines are visible picture info. Yes, there is invisible sync info in NTSC, PAL, etc., formatted video, but for ex. in NTSC this is how you get from 480 to 525 scan lines; the sync info is in the extra 45 scan lines. Similarly in HD formats, "720p" means 720 *visible* pixels on the vertical dimention, , just as there are 768 visible pixels vertically in XGA. Now, sync info must of course be sent to the display, and this does take time - but there are still 720 visible lines. So there is no "7 percent less" to allow for sync info.
Edit2 - added: I have the answer!
The sensor actually is 1280x720 pixels, so it can create 720p video, no problem. That is a 16:9 format.
But still pictures... most still camera take 4:3 pictures, and the iPod's camera does the same. A 4:3 picture with 720 pixels vertically is 960x720. That's 691,200 pixels, or 0.7 megapixels.
So it doesn't have a 0.7 mP sensor at all. They just only use 0.7 mP of it for still pictures.
Which acer laptop/netbook is this?
I'm New At
I go to this thing called kumon and one of the prizes they have is a 8.9" Acer Aspire mini laptop.
There are a bunch of different acer aspire laptops/netbooks and I don't know which one this is! i want to look up the review for this to see if it is any good.
http://www.cosmic.kumon.com/prizes/index.aspx?prizes=300zenith
thanks!
Answer
Most likely, this one
http://www.amazon.com/Acer-Aspire-8-9-inch-Laptop-Processor/dp/B001BBS76Q
* 1.6GHz Atom N270 Processor
* 8GB solid state hard drive, 512MB DDR2 SDRAM (expandable)
* 802.11b/g, Ethernet, three USB 2.0, VGA, and 3.5mm audio out
* 1.3 megapixel camera, SDHC and multi-format media readers
* Linpus Linux Lite operating system
end of line
Most likely, this one
http://www.amazon.com/Acer-Aspire-8-9-inch-Laptop-Processor/dp/B001BBS76Q
* 1.6GHz Atom N270 Processor
* 8GB solid state hard drive, 512MB DDR2 SDRAM (expandable)
* 802.11b/g, Ethernet, three USB 2.0, VGA, and 3.5mm audio out
* 1.3 megapixel camera, SDHC and multi-format media readers
* Linpus Linux Lite operating system
end of line
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Title Post: how come the 0.7 mp camera of the ipod touch 4g can capture 720p video?
Rating: 92% based on 9788 ratings. 5 user reviews.
Author: Yukie
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Rating: 92% based on 9788 ratings. 5 user reviews.
Author: Yukie
Thanks For Coming To My Blog
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