Rule of thirds - grid lines on the iPhone and Android smartphone explained (2024)

What is the Rule of Thirds?
To create an aesthetically pleasing photograph – there are several compositional guidelines. The rule of thirds is one of the most powerful techniques, to help you position different elements in the photo.
Most modern smartphone cameras now can overlay the lines over the screen before taking the photo. These are referred to as either grids or gridlines - and they do not appear on the photo!

I have had the privilege of presenting to camera clubs about iPhone photography and guest judged their monthly competitions. The number one photo analysis feedback is composition. It really can make or break an incredible photo.

Rule of thirds is the process of placing two equally spaced vertical and horizontal lines across the photo – thus creating nine squares, looking like a Tic-Tac-Toe board. You can have this overlay on the screen of your iPhone and Android smartphone. It does not record on the photo!

Why use the Rule?
When you position the main subject in the centre of the photo – it becomes static. The viewers' attention goes straight to the centre of the photo and gets stuck there. Imagine now, a photo of a subject positioned off-centre. The viewer is then encouraged to look beyond the main subject and further explore the remaining photo. This is where you can position supporting subjects and/or background to provide the context and narrative to the photo. The subject can remain the dominant object in the photo, through the use of size, lighting, colour and sharpness.

You are already doing it!
You probably already do this without realising. Have you taken a photo of someone (or selfie), where you want to show people or remember the context of where you are. You will no doubt already be placing them in the side of the frame, or at least ensuring there is enough space around them to see the context of the location.

Four intersecting points
The ideal position is actually atop of one of the four points where two lines intersect. This places the subject off-centre both vertically and horizontally.

How do I crop an image on my iPhone or Samsung Android smartphone?

iPhone: Open the photo in your Photos app > Edit > Crop (crop icon with arrows) > Aspect (the stacked square) > Square. Drag the image and/or each corner then tap Done.

Samsung Android: Open the photo in the gallery > Transform > Ratio > 1:1. Drag the image and/or each corner then tap the tick icon.

How do I crop an image using Snapseed?
Snapseed is my favourite mobile photo editing app. Cropping the photo is step two in my six-step 'Simple Snapseed photo editing process' article

Open the photo > Tools > Crop > Square.

The Snapseed app provides a Rule of Thirds 3x3 grid overlaid on the image. Drag the image and/or each corner then tap the tick icon.

Landscapes
One of the many reasons why we take photographs is to communicate a story. In a landscape, the main subject can often be the stunning location or the amazing sky. When you place the horizon in the middle of the scene, it cuts the image in half and the viewer has to subconsciously work harder to interpret what the image is about (story). If you love taking landscapes in your travels check out my article '40 tips to take travel photo using your smartphone article'.

By placing the horizon on the lower of the two horizontal lines, you are filling the top two thirds with the sky. As the majority of the image is the sky – you are communicating to the viewer that this is what the story is about. Conversely, if the sky is a bit drab and not giving you anything – place the horizon on the top horizon line.


Portraits
Next time you see a magazine cover – notice the model's eye will always be in one of these four intersecting points. It will also be the eye closest to the camera. Sometimes there may be variations when the photographer has to leave extra room for text and headings on a magazine page. This also applies to taking portrait photographs of your pets!

I have had a couple of attendees contact me several weeks after an in-person smartphone photography workshop – to tell me that I had ruined going to the movies forever! Now they find themselves analysing the production and positioning of the actors and are now seeing the rule of thirds everywhere! You probably will too now – you're welcome!

Which line do I place the subject?
Now imagine a photo of a person positioned ideally on the left of the two vertical lines. In the first photo, we have the person looking toward the middle of the photo. This allows us to see what they are looking at and quickly interpret the story being communicated. In the second photo, the person is positioned the same – however, they are positioned on the right vertical line and looking toward the edge of the photo. This can create some visual tension, as we cannot see what it is they are looking at. It creates some unease, confusion, mystery and in some instances can completely change the mood.

Although the viewer is encouraged to use their own experiences and imagination to interpret your image – you had a clear intention for taking the photo. Cropping the image without sufficient considering can dramatically change the story, look, feel, mood and emotional response from the viewer.

Square photos rule of thirds variation
On the iPhone – you have the option to capture a square image as a capture mode. Most Android smartphones have multiple aspect ratios available in the settings.

When you either capture or edit a photo in a square aspect ratio 1:1 – the rule of thirds stills applies. However, the lines closer to the middle are not that far off-centre. I recommend imagining the interesting lines further out. This creates more space that is normally a bit of a struggle in a square photo.

Rules can be broken - in photography!
The rule of thirds should be renamed guidelines of thirds. It doesn't quite sound the same does it? It is just that though, it is a guideline – it is there to help you understand a basic theory to consistently create photos that are aesthetically pleasing to the eye.

A reason to break this rule is when photographing a plate of food from above – referred to as a flat lay. Portraits, where you do not want the eye to go wandering, can also be extremely effectively positioned in the middle. Another great example of not employing this technique is reflection images. These can sometimes be far more effective cropped as a mirror image for absolute symmetry.

My advice is to study these composition guidelines – understand why they work, when to apply them and when to experiment and create photos outside of these rules.

Rule of thirds - grid lines on the iPhone and Android smartphone explained (3)

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Rule of thirds - grid lines on the iPhone and Android smartphone explained (2024)

FAQs

Rule of thirds - grid lines on the iPhone and Android smartphone explained? ›

It really can make or break an incredible photo. Rule of thirds is the process of placing two equally spaced vertical and horizontal lines across the photo – thus creating nine squares, looking like a Tic-Tac-Toe board. You can have this overlay on the screen of your iPhone and Android smartphone.

What is the rule of thirds on iPhone grid? ›

To switch the gridlines on go to Settings > Photos & Camera > Grid. The rule of thirds states that the most important elements in the scene should be placed along the gridlines or at the intersections where the lines meet.

Does iPhone have rule of thirds? ›

To enable the rule of thirds grid when using the iPhone's native camera app, go to Settings, then Camera. Under the Composition heading, make sure that the Grid toggle is enabled. On an Android device, the process will be very similar. First, launch the camera app and tap settings.

What is grid mode on iPhone? ›

To display a grid or level on the camera screen that can help you straighten and compose your shot, go to Settings > Camera, then turn on Grid and Level. After you take a photo, you can use the editing tools in the Photos app to further align shots and adjust horizontal and vertical perspective.

What is grid setting on iPhone? ›

The Grid Function on an iPhone can be useful for aligning objects and capturing better photos. Here's how to use it: Open the Camera app on your iPhone. Tap on the "Options" button in the top left corner of the screen. Scroll down until you see the "Grid" option.

What is the use of grid lines in mobile cameras? ›

They help you align your subjects and elements along the lines or intersections, creating balance, harmony, and visual interest. Most cameras and smartphones have a grid option that you can turn on or off in the settings.

How do I make my iPhone 3x3 grid? ›

how to add a grid to pictures on iphone
  1. Open your iPhone camera app.
  2. Tap on "Settings" in the upper right-hand corner of the screen.
  3. Scroll down until you see "Grid" and toggle the switch to "On."
  4. The gridlines will now appear on your camera screen, creating a 3x3 grid.
Aug 25, 2023

What is the rule of thirds for beginners? ›

What is the rule of thirds? The rule of thirds is a composition guideline that places your subject in the left or right third of an image, leaving the other two thirds more open. While there are other forms of composition, the rule of thirds generally leads to compelling and well-composed shots.

What is GridView in Android? ›

A GridView in Android is a versatile UI widget that arranges data in a grid-like fashion, typically used to display images, text, or other items in rows and columns.

What is the rule of thirds grid lines? ›

Rule of thirds is the process of placing two equally spaced vertical and horizontal lines across the photo – thus creating nine squares, looking like a Tic-Tac-Toe board.

What is the rule of 3rd grid? ›

The rule of thirds is a composition guideline that places your subject in the left or right third of an image, leaving the other two thirds more open. While there are other forms of composition, the rule of thirds generally leads to compelling and well-composed shots.

What is the thirds rule grid? ›

In the rule of thirds, an image or design is divided into three sections, by columns and rows, whether square or rectangle-shaped. Then, the image or design is split into three columns vertically and three rows horizontally to create nine individual squares inside of the larger design.

What is the rule of thirds grid system? ›

The rule of thirds is a method of breaking up an image or design into different sections using columns and rows that form a grid. The grid consists of three evenly-spaced rows and columns to make nine equal boxes that fit over the image. The grid on your phone's camera is a great example of this.

What is the rule of thirds with grid lines? ›

It involves dividing an image into thirds, both horizontally and vertically, to create a grid of nine equal parts. According to the rule of thirds, the most important elements in an image — i.e. the main subject or focal point of the photo — should be placed along these lines or their intersections.

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