One of the most common mistakes beginners make is overexposing an image. This helpful video talks about why overexposure is so detrimental to a photo and the various methods you can use to prevent it from happening in your images.
Coming to you from James Popsys, this helpful video talks about the dangers of overexposing an image and the many ways you can prevent it or work around it. You might notice that often, photographers underexpose an image slightly and bring back the shadows in post. This is because unlike film, digital cameras have a hard cutoff for their exposure tolerance, and once that has been exceeded, there's no recovering the blown-out highlights. Many modern cameras have helpful guides to help show you if you've blown out the highlights, and mirrorless cameras in particular contain some very helpful real-time aids. In addition to Popsys' tips, I recommend turning on your camera's highlight alert system. This will flash a warning over any areas that have blown highlights when you review images. It's particularly helpful if you're shooting on a DSLR and don't have the real-time aids in the viewfinder, as it allows you to take a quick glance at the back LCD immediately after taking a shot to make sure your exposure is safe. Check out the video above for more helpful tips!