camera VS scale

In this project I tried to make a zoom effect by nesting the scene within master composition and scaling it. But it caused a great quality loss. To solve this out I tried different things, such as scanning assets at bigger dpi (800 instead of 300), but it didn't work well. Still quality was pretty bad. In the I set up proper camera and converted all layer to 3D object. And I then I would use the camera to make zooming in. This approach saved the quality and made it look more like a normal camera, which is great. Also I decided to add some camera wiggle through expressions, it made it look even more realistic.