It is not real HDR images. It’s an advantage to shoot RAW.
What is the difference between JPEG and RAW formats? The main advantage of JPEG format is that images in JPEG are ready for print or can be uploaded to the web as soon as you take them off your camera.
If you choose to use RAW format, you can have a lot of fun manipulating your image. I promise :-). You may not know it, but camera RAW format is 12, 14 or even 16 bits per color (depending on your sensor), compared to 8 bits per color for a JPEG. What does that mean? RAW gives significantly more room for adjustments, as it has more color information (this is a raw snapshot from a camera’s sensor), allowing more brightness, contrast, white balance, and saturation, without losing quality. The final image will be converted (down-sampled) to 8 bits per color, because our monitors only support 8 bits per color anyway. Working with JPEG is like manipulating on a small web-size photo, compared to a full-resolution source and saving it to a small size afterward.