My favorite prime lens for traveling is the Panasonic 20 mm f/1.7 pancake lens.  Since I don’t travel much anymore, I occasionally get the urge to stick it on my camera and take it for a walk.  I used it to make this image since I wanted to see how it worked for flowers.  In this case I got as close as it would focus and used f/1.7 and 1/5000 sec since the wind was blowing and I also wanted to blur the background.