Hi there! So, sharpening is when we make a dull thing sharp again. For example, when you use a pencil a lot, the tip becomes dull and you can't write well with it anymore. But if you sharpen it, you can make the pointy tip come back and use it to write smoothly again.
When we talk about sharpening in pictures, we mean making the details in the photo look clearer and more defined. This is done by using special tools in editing software. Just like how you sharpen a pencil using a special sharpener, people use these tools to make pictures look better.
When we take a picture, it's not always perfect. Sometimes it can look blurry or there might be grainy spots. Sharpening can help fix those problems by making the edges of things in the photo stand out more. Think of it like outlining a picture with a dark pen or crayon. The dark line makes the subject in the picture easier to see and understand.
Just like sharpening a pencil, you don't want to overdo it when you're sharpening a picture. Too much sharpening can make the picture look weird and fake. It's important to balance out how much you sharpen with how much it actually improves the picture's quality.
So, that's what sharpening is! It's using tools to help make pictures look their best by making the details more clear and defined.