Chapter 5: Aperture
- Pixel Palette
- Jun 18
- 4 min read
Introduction
Have you ever wondered why some photographs have a beautifully blurred background while others appear sharp from front to back?
Why do professional bridal portraits often have a creamy, dreamy background, while group photographs keep everyone in focus?
The answer lies in a camera setting called Aperture.
Aperture is one of the three pillars of exposure, along with Shutter Speed and ISO. It controls two very important things:
The amount of light entering the camera.
The depth of field (how much of the image appears sharp).
At Pixel Palette Studios, understanding aperture is essential because it helps us create everything from stunning bridal portraits to sharp family group photographs.
What is Aperture?
Inside every lens is an opening through which light passes before reaching the camera sensor.
This opening is called the Aperture. Think of it as the pupil of your eye.
When you enter a dark room, your pupils become larger to allow more light in.
When you step into bright sunlight, your pupils become smaller to reduce the amount of light entering your eyes.
A camera lens works similarly.
A larger aperture allows more light to enter.
A smaller aperture allows less light to enter.
Understanding f-Numbers
Aperture is measured using f-numbers or f-stops.
Examples include:
f/1.4
f/1.8
f/2.8
f/4
f/5.6
f/8
f/11
f/16
At first, the numbering seems confusing.
The important thing to remember is:
Smaller Number = Larger Opening
Example:
f/1.8 = Very large opening
f/16 = Very small opening
This is one of the most common beginner mistakes.
Many people assume f/16 is larger than f/1.8 because the number is bigger.
In photography, it is the opposite.
Aperture and Light
Aperture controls how much light enters the camera.
Wide Aperture
Examples:
f/1.4
f/1.8
f/2.8
Characteristics:
More light enters
Brighter image
Better for low light
Narrow Aperture
Examples:
f/8
f/11
f/16
Characteristics:
Less light enters
Darker image
Often used in bright conditions
What is Depth of Field?
Depth of field refers to how much of the image appears sharp.
This is where aperture becomes a creative tool.
Shallow Depth of Field
When using a wide aperture:
Examples:
f/1.4
f/1.8
f/2.8
The subject remains sharp while the background becomes blurred.
This effect is called:
Background Blur
or
Bokeh
Professional photographers use this frequently in portrait photography.
Deep Depth of Field
When using a smaller aperture:
Examples:
f/8
f/11
f/16
More of the scene remains in focus.
This is useful when photographing:
Large groups
Landscapes
Architecture
Aperture in Wedding Photography
Wedding photography requires constant aperture adjustments depending on the situation.
Let's look at practical examples.
Bridal Portraits
One of the most common uses of aperture.
Goal:
Keep the bride sharp.
Create a soft background.
Recommended Aperture:
f/1.8 – f/2.8
Benefits:
Beautiful subject separation
Professional look
Strong visual focus
This is why lenses such as 50mm f/1.8 and 85mm f/1.8 are popular among wedding photographers.
Groom Portraits
Recommended Aperture:
f/1.8 – f/2.8
This helps isolate the groom from distracting backgrounds.
Couple Portraits
Recommended Aperture:
f/2 – f/4
Why not always f/1.8?
Because two people standing at different distances from the camera may not both remain perfectly sharp.
A slightly narrower aperture provides more room for error.
Wedding Detail Shots
Examples:
Rings
Jewellery
Invitations
Bridal accessories
Recommended Aperture:
f/2.8 – f/5.6
This creates attractive blur while keeping important details sharp.
Group Photographs
This is where many beginners make mistakes.
If you use f/1.8 for a large group photograph:
Some people will be sharp.
Others may be blurry.
Recommended Aperture:
f/5.6 – f/8
This ensures everyone remains reasonably sharp.
Family Portraits
Recommended Aperture:
f/4 – f/8
Depending on:
Group size
Distance from camera
Lens being used
Reception Stage Photographs
Recommended Aperture:
f/4 – f/5.6
Benefits:
Multiple subjects remain sharp
Better consistency
Easier focusing
Landscape Photography
When photographing:
Mountains
Rivers
Venues
Outdoor locations
Recommended Aperture:
f/8 – f/11
This keeps most of the scene in focus.
Aperture and Lens Choice
Different lenses have different maximum apertures.
Examples:
50mm f/1.8
Maximum aperture:f/1.8
Excellent for:
Portraits
Weddings
Low-light photography
24-70mm f/2.8
Maximum aperture:f/2.8
Excellent for:
Events
Weddings
Versatile shooting
Kit Lens (f/3.5–5.6)
Maximum aperture varies depending on zoom position.
Good for learning photography but generally allows less light than professional lenses.
The Relationship Between Aperture and Background Blur
Many beginners think:
"Wide aperture automatically means beautiful blur."
Not always.
Background blur also depends on:
Focal length
Distance from subject
Distance to background
Example:
An 85mm lens at f/2 creates significantly more blur than a wide-angle lens at the same aperture.
Common Beginner Mistakes
Using f/1.8 for Group Photos
Result:
Only a few people are sharp.
Always stop down the aperture for groups.
Believing Lower Numbers Are Smaller
Remember:
f/1.8 = Large aperture
f/16 = Small aperture
Shooting Everything Wide Open
Many beginners keep the lens at f/1.8 all day.
Professional photographers adjust aperture based on the scene.
Different situations require different settings.
Ignoring Focus Accuracy
At wide apertures such as f/1.4 or f/1.8:
Depth of field becomes extremely thin.
Even slight focusing errors become visible.
Always focus carefully.
Practical Wedding Aperture Cheat Sheet
Bridal Portraits
f/1.8 – f/2.8
Groom Portraits
f/1.8 – f/2.8
Couple Portraits
f/2 – f/4
Detail Shots
f/2.8 – f/5.6
Family Portraits
f/4 – f/8
Group Photos
f/5.6 – f/8
Reception Stage
f/4 – f/5.6
Venue Shots
f/8 – f/11
Landscapes
f/8 – f/11
Why Wedding Photographers Love Wide Apertures
Wide apertures help:
Separate subjects from the background.
Create a premium look.
Work in low-light environments.
Direct the viewer's attention.
When people see professional wedding portraits with creamy backgrounds, aperture is often one of the main reasons they look special.
Key Takeaways
Aperture controls the amount of light entering the camera.
Aperture also controls depth of field.
Smaller f-number = Larger aperture.
Larger aperture = More light and more background blur.
Smaller aperture = Less light and more of the scene in focus.
Portraits usually use wider apertures.
Group photographs usually require narrower apertures.
Aperture is both a technical and creative tool.
Internship Assignment
Exercise 1: Observe Background Blur
Photograph the same subject using:
f/1.8
f/2.8
f/4
f/8
Compare how the background changes.
Exercise 2: Portrait Practice
Photograph a friend using:
f/1.8
f/2.8
Observe:
Background blur
Subject separation
Focus accuracy
Exercise 3: Group Photography Simulation
Photograph three to five people using:
f/2
f/5.6
f/8
Compare sharpness across all faces.
Exercise 4: Wedding Scenario Analysis
For each situation below, choose the most appropriate aperture and explain why:
Bridal Portrait
Couple Portrait
Ring Shot
Family Group Photo
Reception Stage Photo
Aperture is more than a camera setting.
It is a creative decision that tells the viewer exactly where to look.
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