The 300dpi mark is indeed "true photo quality" in print terms, but it isn't always needed to get good prints. And also the work done in post has more to do with achievable print size than megapixels. "The critical part that is being left out which needs to be tied into this information is sensor size. This chart is only about the math and does not take into consideration the subject matter of the image, the media it will be printed on, the amount of post editing that will be done to it, or the viewing distance of the final output. Strictly speaking in terms of pixels per inch, with no post editing, an 8x10 300ppi is (8x300) x (10x300), or 7,200,000 pixels (7MP). "When you go from 8x10 to 16x20 aren't you quadrupling the area? Therefore it would make sense that you would need 24 to 30 megapixels for a 16x20 if you could produce a 8x10 with 6 to 8 megapixels because 6x4=24 and 8x4=32. "Thanks for bringing some light into the megapixel mistery! " Nice chart, one of many reasons why I opted for the 7 megapixel camera over the 5! " I haven't tried anything larger than a 8x10. Even though 7 is not on the chart it is not difficult to see where it would fit. "Nice guide, I got a 7 Megapixel Camera and it makes beautiful 8x10s. Recognize the importance of sensor quality, optics, compression, post processing, and viewing distance. Once again, I made this chart as a visual representation of megapixels. Since people keep making the same comments, I thought it best to have my original answers at the top. Oldest comments at the top because I tried to answer many of the initial comments about this chart. On this page however, I decided to show the On most Design215 pages you'll see the newest comments at the top. "dots per inch" and why you need 300ppi for true **At 150ppi, printed images will have visible pixels and details will look "fuzzy".įor an explanation of "pixels per inch" vs. Actual pixel dimensions vary from camera to camera. If an image is enlarged too much in this manner, it will look Quality of the camera and lense becomes more important at this point because any loss of detail or If you know how to use image editing software like Photoshop, you can "cheat" even moreīy increasing the image size, and even doubling the number of pixels in the image.At 200ppi, the maximum print size becomes: Prints for yourself or your friends, you can "cheat".
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