Unity3D/C# class that takes screenshot from SFCamera. Works with Scaleform Unity Plugin.

SFCameraSnapshot.cs

using Scaleform;
using UnityEngine;

[RequireComponent(typeof (SFCamera))]
public class SFCameraSnapshot : MonoBehaviour
{
    private bool _takeShot;

    private Rect _rect;
    public void Shoot(Rect getSnapshotRect)
    {
        _rect = getSnapshotRect;
        _takeShot = true;
    }

    private void OnPostRender()
    {
        if (_takeShot)
        {
            var resWidth = (int)_rect.width;
            var resHeight = (int)_rect.height;

            var screenShot = new Texture2D(resWidth, resHeight, TextureFormat.RGB24, false);
            screenShot.ReadPixels(_rect, 0, 0);

            byte[] bytes = screenShot.EncodeToPNG();
            string filename = ScreenShotName(resWidth, resHeight);
            System.IO.File.WriteAllBytes(filename, bytes);
            Debug.Log(string.Format("Took screenshot to: {0}", filename));
            _takeShot = false;
        }

    }

    public static string ScreenShotName(int width, int height)
    {
        return string.Format("{0}/screenshots/screen_{1}x{2}_{3}.png",
                             Application.dataPath,
                             width, height,
                             System.DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss"));
    }
}