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640/240 = 2.666 or 2 and 2/3 inches.
480/240 = 2 inches
So the image is 2.6666x2 inches, or about 5.33 (5 and 1/3) inches squared.
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How many pixel equal to one inch?
1.5 inch=300 pixel
What is the resolution of 2 2 inch image that has 512 512 pixels?
Resulation means pixel per inch either row side or column side, so row side= 512/2=256 or column side 512/2=256.
How do you convert pixels per inch to dots per inch?
It is the same. 1 dot is also 1 pixel.
What resolution do my images need to be printed in a 12x12 frame?
For a 12 x 12 inch print your ideal image resolution dimensions should be 3600 pixels by 3600 pixels. At a minimum your dimensions should be 1800 by 1800 pixels. Larger mega pixel producing cameras are often better when you want to crop your image down to smaller sizes.
How many inches equal one pixel?
It depends upon the physical resolution of the display unit and its manufacture. There can be between about 70 pixels per inch and 325 pixels per inch. (or each pixel is between approx 0.014 in and 0.0031 in wide) - from this the limitations of the resolution than can be displayed is derived. For example, I have an 19 in CRT monitor which can physically display 1600 px by 1200 px over an area of approx 14.4 in by 10.8 in; which means that there are 111 pixels per inch, making each physical pixel approx 0.009 in. Other resolutions of output (1280x1024, 1024x768, 800x600, 640x480) are achieved by overscanning the pixels, sometimes using more than 1 physical pixel to display the pixel (eg 800x600 is achieved by displaying 4 pixels for each pixel (a 2x2 grid) of the output, making the pixels approx 0.018 in in this case, or approx 56 px/in). My laptop display is approx 13 in by 8¼ in with a physical resolution of 1280x800 which gives 96 px/in and thus each pixel is approx 0.0104 in (as given by Lifesnadir above). Again, other resolutions are achieved by over scanning pixels. Another 17 in CRT monitor I have has a dot pitch of 0.28mm which gives approx 91 px/in or each pixel is 0.011 in for its native resolution of 1280×1024.
