The “ Update” controls how much this picture updates. When you press Render, you will see the picture that shows the state of render right now. Also there are settings for Scripts, but it is too advanced and only needed for a small amount of people who are making scripts. It is useful only when there are no other lights on the scene and should be turned off if there are. Headlamp is a tool that produces light directly from your camera view. “ Misc” or miscellaneous is mainly for controlling headlamp. “ Render Target” decides whether you would see the process of your render in the new window or it will just save the file upon finishing. Also here you choose the name of your render file. So if you are making an animation and need a series of images, here in “ Render type” you can change it from the default “ Still image”.
“ Destination” helps you to choose where your final render files would be stored and their type. For portrait pictures it would be 4:3 aspect ratio and so on.
So if you want a FullHD picture you would set Pixel size to 1920×1080 and Aspect ratio to 16:9. You can choose from many presets or set it yourself.
In the “ Dimensions” you can set the size(resolution) and ratio of your render.
