Hi, I'm not sure what DPI exactly is. 300dpi and 72dpi, which is better? why?
Everytime the photo I shot came out as 72dpi, but sometimes I see photos uploaded to the net with 300dpi, how do I get a 300dpi as well?
2006-12-08 05:53:38 · 6 answers · asked by cheeken lita 2 in Consumer Electronics ➔ Cameras
DPI stands for Dots Per Inch. It is a measurement of resolution, or how much detail is in an image. Let me explain...
The DPI number refers to the number of pixels that fit into one inch. So, if an image is 72 DPI, that means in a one inch line, you will find 72 pixels. When you refer to a 300 dpi image, that means in a one inch line, there are now 300 pixels. You can see how a higher number is better in terms of resolution. The more pixels in an inch, the greater the detail of an image.
Digital cameras default to displaying a 72dpi image. But what happens is, as the resolution (5 MegaPixels, 6MegaPixels etc.) of your camera increases, the DIMENSIONS of your picture get bigger and bigger.
One Megapixel cameras output a 1200 pixel by 800 pixel image. But 5-megapixel cameras typically output images of about 2,592 pixels by 1,944 pixels (commonly written as 2592 x 1944). Now, If you went to print that image out at 72dpi, the print would be 36 inches by 27 inches. Unfortunately, you could see each individual pixel of color with the naked eye and it would look bad.
You need to shrink that image down (in an image editing software like Photoshop or PaintShop Pro) so more pixels fit into an inch. As each pixel shrinks, the dimension of the picture goes down too. At 300 dpi, that picture is now only 8.64 inches by 6.48 inches, but it looks extremely sharp and crisp.
Hope that helps.
2006-12-08 08:56:49 · answer #1 · answered by Tim 2 · 0⤊ 0⤋
DPI (dots per inch) is how many dots are in 1 linear inch. The more dots the sharper the image. It is also used in scanning.
You say that every photo you shot came out 72 dpi but that isn't right. The reason you are seeing 72 dpi doesn't have to do with the camera it has to do with the application. If you are printing then you can set the dpi in the printing application. If you are uploading then you set the dpi there or it is preset for you.
2006-12-08 09:17:19 · answer #2 · answered by Theaterhelp 5 · 0⤊ 0⤋
DPI, or dots per inch is typically a way of stating PRINT resolution. Screen resolution is stated in the amount of pixels horizontally by the amount of pixels vertically, like 1024 x 768. It would be impossible for most monitors to display an image at 300dpi. That's why most high resolution images look huge on your monitor but are normal size when printed out, yet very good quality.
2006-12-08 06:09:25 · answer #3 · answered by Geoff S 6 · 0⤊ 0⤋
dots per inch. the higher the number the better quality. 72 dpi images are usually used for web, 300 are usually printed out. it needs to have a higher dpi if you wish to enlarge it, or else the photo will become pixelated
2006-12-08 06:30:57 · answer #4 · answered by Tara 1 · 0⤊ 0⤋
confident and that i do it each and all the time however the utility will manage the photos / selection that's going to insert info (there are few techniques it does it) to make it look stable - sometime it relatively is going to be high quality sometime no longer. in case you test something at 3 hundred dpi and open it and that's seventy 5 dpi that's because of fact your viewer or photograph utility set to open pictures at seventy 5 dpi as default. you may oftentimes replace it in ideas. (some software will open pictures interior the saved selection some no longer)
2016-10-14 06:57:55 · answer #5 · answered by Anonymous · 0⤊ 0⤋
dots per inch. 300 DPI is not as good quality as 720DPI. Are sure you didn't mean 720 and not 72? Never heard of 72.
2006-12-08 05:55:00 · answer #6 · answered by nikonphotobug 3 · 0⤊ 0⤋