In print, the resolution is measured in dpi(dots per inch), and this is in reference to how many dots of ink or toner the printer places on the sheet in one square inch. On a screen (phone, tablet, computer), the resolution is measured in ppi (pixels per inch) and is the same concept but for digital media.
The resolution of a computer screen is usually 72ppi but with print, the minimum resolution is 300dpi. It doesn’t matter what the quality of your computer display is; what is important is the resolution of your document when you export it.
When exporting from Adobe InDesign, make sure to set the resolution to 300dpi in the ‘Compression’ tab. PICTURED BELOW
If you are using a programme such as Adobe Photoshop, you will need to set the resolution to 300dpi when creating the document. PICTURED BELOW
Low-resolution images make you look unprofessional and will give a bad impression to your potential clients. To avoid using low-resolution images you should use a filter when using a search engine. PICTURED BELOW
A better solution is to use royalty-free images from sites such as Pexels as these are usually high quality.
When taking your own photos it is important to make sure the subject is well lit. Although adjusting the ISO within the camera will brighten the image, it may make the final picture appear more grainy and therefore lower in quality. The best way to make sure your image is bright enough while retaining clarity is to light the subject with bright photography lights or to use outdoor, natural light.