1.
500secs at f22
250secs at f22
125secs at f22
What you can see from the above shots is that by altering the exposure you can effect the size and shape of the rays produced by the sun, i particularly like the rainbow halo that is produced around the sun. This is good effect to be aware of but I'm not sure its something that i would look to use very often as i don't like including the sun in my landscape work that much unless its at sunrise/sunset when you can make it a really eye catching part of the image.