In order to transfer pictures from your Sony camera to your PC, you shouldn't buy any software. To do that, you only need a USB cable to make the communication between the camera and PC possible. The process is fairly simple. Turn on your PC, connect your camera while it's OFF to the PC using the USB cable, turn ON the camera, wait for the PC to recognize the device, the autoplay should start the transfer process. To begin it, click on the Import Pictures and videos using Windows. From there, just follow the steps provided. For more information about this issue, visit the following support website.