Retaining High Resolution from a Picture

I’m applying a picture to a material and applying that material to a plane. When I see the result, it is a lower resolution that what I would like. How can I control the picture’s resolution to achieve something closer to the original “hi-res” picture?

Thanks.

Check the asset’s import settings by finding the texture in the project. You can tweak settings there like compression or color depth. Sometimes texture compression can cause artefacts.