how a longer exposure can make water look like glass

while still at summit lake, alaska i wanted to play with some longer exposures.  the first image below was only 1.3 seconds in length.  notice how you can see the ripples and definition of the surface of the water.

mytoesarecold gallery series

mytoesarecold gallery series

this second image had a shutter speed of 30 seconds.  notice how the definition on the surface of the water disappears and begins looking like glass.

mytoesarecold gallery series

mytoesarecold gallery series

the water wasn’t moving very fast because there was hardly any wind and there certainly weren’t any boats on the lake at 3am.  any time you have moving objects and you keep the camera stationary you can end up with some cool effects.