Description: photo tips from Richard Herzog and herzography tips
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Output is determined by the input so, let's look at some output devices mostly used today. Most commonly used are cell phone screens, computer monitors for web browsing and inkjet printers for making physical prints. The resolution on most monitors is very low, 72 PPI, whereas printer resolution (DPI) can vary and are much higher resolution than a computer monitor. Usually, printer resolution is around 180dpi to 300dpi but check your printer’s manual or with the company that's doing your printing to find ou
How do you calculate the size of the file you need to give a photo-lab? The easiest way I have found to check on what resolution you need is to go into Photoshop and select command N to create a new image. Set the size parameters with the height / width, resolution and color depth that you require. You will then see the file size you need for printing.