You can get great lighting for your portraits with on-camera flash. And there’s no need to purchase expensive attachments to modify your light, because everything you need is already there. The thing to understand is that your flash unit is just another light source at your disposal. Fortunately, you can learn to control the light it produces and shape it to your needs. Plus, it has the added benefit of doing some of the thinking for you when you need it to.Since the light your flash unit produces directly can appear rather harsh, you’ll have to do one or both of the following in order to get more pleasing lighting from it: Create a larger, wider area of light relative to your subject. Illuminate your subject from an angle other than directly off the top of the camera.The following tips will help you accomplish these goals:
via 8 On-Camera Flash Tips: How To Get Better Lighting From Your On-Camera Flash.