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A 1080p resolution means the image has 1920 pixels horizontally by 1080 vertically (1920x1080). You can find the total pixels in the image by multiplying those two numbers (the height and width) together, meaning a 1080p image has more than 2 million pixels.

Definition 2: Resolution can be expressed as the total number of pixels. With megapixel cameras, the resolution is generally the total number of pixels, divided by 1,000,000, and rounded off.

Excellent quality photo prints require a resolution of at least 300 dpi (dots per inch). Therefore, an image file should ideally measure at least 1200 pixels by 1800 pixels to print an excellent quality 4x6 print. This is because 4 inches x 300 dpi = 1200 pixels and 6 inches x 300 dpi = 1800 pixels.

Calculating the mega pixels of the camera Lets say we have an image of dimension: 2500 X 3192. Its pixel resolution = 2500 * 3192 = 7982350 bytes. Dividing it by 1 million = 7.9 = 8 mega pixel (approximately).

Understanding the DPI ratio We can imagine DPI as the number of pixels which would be needed for one inch (2.54 cm) of printed paper. Usually, for a quality print, we need about 300 DPI, meaning that an image the size of an A4 paper should count 2480x3507 pixels.

The best resolution for a picture can vary depending on its purpose. While 300 DPI is a great benchmark for printed pictures, for large posters that may be further away from the viewer, you may be able to reduce the resolution to 150 DPI. For online images, the standard resolution is 72 PPI.

Yes, most industries would describe 600 DPI as high-resolution. If an image has a resolution of 600 DPI, the printer will produce twice the standard number of dots per inch.

Image resolution is typically expressed as a horizontal x vertical measurement. So, an image resolution of 6000 x 4000 tells us that the image measures 6000 pixels in width and 4000 pixels in height. Multiplying the two figures together gives us the second way this is commonly stated, namely as megapixels.

PPI ?Pixels Per Inch, this is a measurement for the detail shown on a computer screen or digital image. Anything 300 PPI or over is usually considered to be high resolution.

The best way to get high-resolution images is by using the right camera for the job. But when that's not an option ? or you're looking to improve older digital photos ? Adobe Photoshop and Adobe Photoshop Lightroom can help. Experiment with Super Resolution and resampling to see how far you can push your image quality.