Hi guys, it is my first time using unreal. I would like to ask how to take a realistic screenshot of my work. Thank you for your answers.
You have 2 ways to take screenshots.
In editor via the high resolution screenshot option or at runtime with the console command : high res shot 1920x1080 (or a number between 1-10, where its a multiplier of your screen res).
**important to know : high res shot don’t take temporalAA into consideration when saving the image. It’s the way it work. Use FXAA or take a huge screen and downscale it in photoshop to reduce the apparent AA. Good luck.
Print screen on your keyboard will have TemporalAA tho, but you only get a screen the size of your monitor 
Source : https://docs.unrealengine.com/latest/INT/Engine/Basics/Screenshots/index.html
thank you for helping kind sir