A great method of controlling your viewer's focus and bringing more attention to the subject of your photograph is using "frame within a frame". It's a simple concept with a huge impact, and can easily be used for this challenge!
The first image to the left is an easy way to utilize "frame within a frame" because you are literally bringing a frame into the image. Notice how your eye doesn't want to leave the frame, you just want to solely focus on the couple.
The image to the right is a beautiful use of "frame within a frame" as the photographer found a natural "frame" in a rock formation and used it to create a powerful image.
Your eye immediately focuses on the rock formations through the frame created by the rock in the foreground.
Your eye may wander to admire the beauty of the foreground, you always jump back to what's within the frame.
Photograph by Ambarin Afsar.
Photograph by Ray Bradbury.
Photograph by Glenn Nagel Photography.
The use of frame to to the left is very interesting.
The photographer chose to edit the frame in a surrealistic way by repeating the image over and over again, drawing your eye down through the frames within each frame.
Keep in mind, your photograph that you do for this challenge does NOT have to be realistic and plain. Venture into the world of surrealism and abstraction and you may surprise yourself.
Photograph by Björn Bechstein.
The image above is a beautifully simple yet complex use of a frame within a frame. While there are a lot of "frames" in the image, only one draws your attention because of the human subject within that frame. This is a great use of geometric shapes and line. Notice how the shutters and the man are all facing right? This is intentional to create a sense of harmony within the photograph.
The image to the left is a very creative and complex way of using frame within a frame. The photographer found a subject with a strong enough prescription of eyewear that would result in most of the subject's face in the left lens, while capturing enough of the face to keep you intrigued in the right. Remember when we discussed how we are attracted to looking at eyes in photographs? This image has 4 eyes and one subject. Impressive.