Orthographic size for 2D sprites

I've read that the best way to keep a 1:1 sprite ratio for pixel-perfect art is to "set an orthographic size that matches the vertical screen resolution divided by the pixel height of a sprite" and then to halve that number to set as the orthographic size.

For testing purposes I'm using my current monitor which is 1680x1050 and my sprites are 80x80, so (1050 / 80) / 2 = 6.5625 right?

But when I set my orthographic size to 6.5625 this and test it full screen, the sprites are always smaller than they should be.

What am I doing wrong? Source for the information: http://www.third-helix.com/2012/02/05/making-2d-games-with-unity.html

 

I'm not sure if this is what you're looking for, but I've been using this script (from a tutorial on YouTube) and it seems to do the job.

Code (CSharp):

1. using UnityEngine;
2.  
3. [ExecuteInEditMode]
4. public class ScreenController : MonoBehaviour
5. {
6.     public int TargetWidth = 1440;
7.     public int PixelsToUnits = 32;
8.  
9.     private Camera owner;
10.  
11.     void Start()
12.     {
13.         owner = GetComponent<Camera>();
14.     }
15.     void Update()
16.     {
17.         int height = Mathf.RoundToInt(TargetWidth / (float)Screen.width * Screen.height);
18.         owner.orthographicSize = height / PixelsToUnits / 2;
19.     }
20. }

 

I applied that script to the camera but nothing happens (I played around with the numbers and noticed no changes) and despite there being no errors, I get this message below the script in Unity:

The associated script can not be loaded. Please fix any compile errors and assign a valid script.

EDIT:

I'm not sure why it wasn't working before, but trying your code and then reverting back to the code I had before has somehow fixed it! Works great now, this is what I'm using:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class CameraFollow : MonoBehaviour {
5.  
6.     public Transform target;
7.  
8.     Camera mycam;
9.  
10.  
11.     // Use this for initialization
12.     void Start () {
13.  
14.         mycam = GetComponent<Camera> ();
15.  
16.     }
17.    
18.     // Update is called once per frame
19.     void Update () {
20.  
21.         mycam.orthographicSize = (Screen.height / 100f) / 2f;
22.    
23.     }
24. }