It may digitally compress it, too, throwing out additional data important to image quality. When you post it, Facebook, in most instances, downsizes the resolution, or reduces the number of pixels to make it smaller.
Now, say you upload that photo to Facebook. Since one million pixels is known as a megapixel, the resolution of your smartphone image is 12 megapixels. If an image you shot on your smartphone, say, is 4,000 pixels high by 3,000 pixels wide, it contains a total of 12 million pixels (the height multiplied by the width). Namely, image resolution.Įvery digital photo has a certain image resolution, which is the total number of pixels that make up a photo. Before I explain how to back up your photos, it’s useful to understand one important aspect of digital photos that relates to storing them properly.
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