I normally use the burst method for low lightJust take lots of pics, about 1 out of every 3 will look good.
Also depends on the window, if there's a bit of bird**** on it, or the sun is at a bad angle it can get messed up.
You get a few blurry pics when taking through a window as the camera lens can get a bit confused as to what distance it should focus on.
If u want to use zoom, then take about 6 pics of whatever it is you want a pic of.
What I'm trying to say is - TAKE A LOT OF PICS.![]()
The problem in this case is the sheer size of the 150-500 and/or the 50-500 will make the vibrations much more pronounced than I'm used to.