Are you new to Seattle? There's 10xGazillion places for good photo-op. You don't have to drive far.
There's some really good fall color right now. A favorite place of mine is Lake Sammamish State Park. There are two entrances...I usually go to the one where the boat ramp is. Especially during the weekday--not many people there, so you get the vast expanses of lawn, and pristine backdrops all to yourself. You can either do treed/nature scenes, or you can spin around and catch the car looking out towards the lake.
Example of a pic I did with my old '97 Camaro (like waaaay back in the day. I think I took this photo in 2003).
