Do my Image Widths Exceed Limit?
Rather than opening a resource and then remembering to close it with a .Dispose() call,
I think it's good to use the using (...) { ... } idiom as much as possible.
Some questions (and again) on Stack Overflow suggest some issues with releasing image resources when opened with Image.FromFile.

I propose this alternative:

public static void Main()
{
    string[] files = Directory.GetFiles("C:\\Users", "*.png", SearchOption.AllDirectories);

    foreach (string file in files)
    {
        using (FileStream fs = new FileStream(file, FileMode.Open, FileAccess.Read))
        using (Image img = Image.FromStream(fs))
        {
            if (img.Width &gt; 1100)
            {
                Console.WriteLine(file);
                Console.WriteLine(img.Width);
            }
        }
    }
}