Should One Change The Dpi Or Size Of A Photo First

The size and resolution of an image affects both its appearance on your figurer screen and its print quality.

Resolution

Resolution refers to the corporeality of visual detail contained in an image. The resolution of output devices (printers) is measured in dots per inch (dpi), and in the case of halftones, lines per inch (lpi).

For most artwork, 300 dpi is preferred. Most printers produce first-class output from images set up at 300 ppi.
You lot can use 150 dpi for large prints because the difference in print quality is not very noticeable on large pieces when you look at the prints from a altitude.
Output device resolutions vary, depending on the type of press and paper used. In general, a photo is output at a crisp 150 lpi if printed on sleeky mag stock, and at 85 lpi if printed on newspaper stock.

Acquire more about resolution in the Corel Painter Help.

Sheet dimensions

The sheet dimensions determine the size of your artwork when it is printed. When you set up the canvas size, cull options that correspond to the image's destination.

Consider the largest size at which you lot plan to print your artwork, too as whatsoever smaller or larger copies that yous may demand.
Cull a larger paradigm size to preserve more paradigm item. The large size makes it easier to maintain image quality when you need to produce a smaller version of the paradigm. For example, you can set the resolution of a new image at 300 pixels-per-inch (ppi), the width to sixteen inches, and the height to 24 inches.

Starting with a standard frame size, for example, 18 in by 24 in, will give you an adequate corporeality of item. When you lot create a new certificate, first gear up the resolution, and and so specify the width and the acme.

It is always better to start with a bigger canvas because you can decrease the width and elevation of your image at any point without affecting its quality. Nonetheless, when you increase image dimensions, the awarding inserts new pixels between existing pixels, and their colors are based on the colors of adjacent pixels. If you increase image dimensions significantly, images may appear stretched and pixelated.

Changing the height and width of an image without changing the resolution results in quality loss. Left to right: image with smaller dimensions, original image, image with larger dimensions.

When choosing a sheet size, brand sure your document has the proper aspect ratio that will allow you lot to print to common canvass and paper sizes (for instance, eight in by 10 in, eleven in by 14 in, 16 in by twenty in, 18 in past 24 in, etc.) without cropping your artwork.
If you are using a personal light amplification by stimulated emission of radiation or inkjet printer, set your document size in inches, centimeters, points, or picas at the dots-per-inch setting specific to your printer.
If you are using a commercial printer or a more than sophisticated output device, the dimensions of the image should always be set up to the actual size that you desire the image to appear in the printed piece. A good dominion of thumb is to fix the number of pixels-per-inch to twice the desired lines per inch. So, at 150 lpi, the setting should be twice that, or 300 ppi; at 85 lpi, the setting should exist 170 ppi. If y'all take questions about the resolution of specific output devices, it's a skilful idea to bank check with the print service provider.

Annotation that the bigger the canvas size and resolution, the more pixels there are in a brushstroke, and the harder information technology may become for your calculator to process information technology. To ensure optimal brush and application performance, experiment to find the largest canvass dimensions that work best for your painting and for your software and hardware configuration.

To ready resolution and sheet size

1. Click File > New.
2. Make certain the sail preset is set to Painter Default.
3. Cull Inches as the unit of measurement.
4. Enter a value in the Resolution box.
5. Enter values in the Width and Height boxes.
6. Click OK.