The rainbow is one of nature's more beautiful occurrences. It doesn't matter where you're headed or the hurry you're in, a rainbow has the power to stop you in your tracks and take a moment to look in awe. If you love photography, you catch that awe inspiring moment on film. All too often, I develop my film only to find that I failed to capture the true wonder on film.
The wet fall days and clear crisp skies mean that rainbows are plentiful and the opportunities to practice photographing them are in abundance. How to photograph a rainbow
gives you tips on taking the best picture.
A tip that I found particularly useful is this one about positioning the end point of your rainbow.
End Points of the Rainbow - the point where a rainbow hits the ground/horizon is an important point in any rainbow photograph. This is a natural point of interest so think about where you'll put it in the frame. You might want to zoom in on this spot or even quickly change your own position so that it lines up with some other object in the scene.
The tips address everything from foreground to composition to filter. Read through their suggestions and go searching for your subject. By the end of this rainy season you'll have a collection of rainbow photos.