drawing enemies with a moving overhead 2d camera

gistfile1.cs

//drawing enemies with a moving camera

 Vector3 cameraPos = new Vector3(-camera.Position.X, -camera.Position.Y, 0);
            Matrix cameraTrans = Matrix.CreateTranslation(cameraPos);
            spriteBatch.Begin(SpriteSortMode.Immediate, null, null, null, null, null,cameraTrans);
            foreach(Sprite s in sprites)
                s.Draw(gameTime,spriteBatch, true);
            spriteBatch.End();