better video game quality

Well I am inquiring for my sniper game project I'm working on and I would like to make the quality buffering better so that when I zoom the textures are not all pixelated....any feedback is appreciated :)

How are you zooming? I think a loseless way is changing the FOV of the camera, that works for me atleast... Um, you could tweak it in a way that when you zoom, it just pushes the camera out, then it'll just have the same graphics, if that makes sense?