Mastering the Soft Background: How to Achieve the Bokeh Effect

Portrait of a man with bokeh effect in the background | Photo source: Aswin R S on Pexels

Key Takeaways for Mastering Bokeh

• Aperture is King: Use the widest aperture your lens allows (low f-stop numbers like f/1.4 or f/2.8).
• Distance Matters: Increase the space between your subject and the background while decreasing the distance between the camera and the subject.
• Lens Choice: Longer focal lengths (85mm and above) naturally compress the image and enhance background blur.
• Quality Over Quantity: The number of diaphragm blades in your lens determines the shape and smoothness of the bokeh circles.
• Context is Crucial: Use bokeh to isolate subjects, but ensure the background still supports the story you’re trying to tell.

Anyone who’s browsed professional portfolios or even scrolled through Instagram has seen images where the subject pops against a creamy, blurred background. This aesthetic quality is known as bokeh. While it might seem like a post-processing trick, the best bokeh is created in-camera through a mix of optics and technique. 

What is Bokeh?

Bokeh is the aesthetic quality of the out-of-focus areas in a photograph, typically appearing as soft, blurred circles of light. It’s achieved by using a shallow depth of field, created by wide apertures, long focal lengths, and physical distance from the background.

The term comes from the Japanese word boke, which translates to "blur" or "haze." In photography, bokeh refers to the quality of the areas that are out of focus in an image, rather than just the amount of blur. For instance, smooth, creamy backgrounds are usually considered pleasing, while a busy or harsh blur can detract from the main subject.

Why Photographers Use the Bokeh Effect

The bokeh effect is more than just a stylistic choice: it’s a powerful tool for visual hierarchy. By intentionally blurring the background, you eliminate distractions and force the viewer’s eye to land exactly where you want it.

This technique is a staple in portraiture, where a busy street or a messy room can be transformed into a soft wash of color, keeping the focus entirely on the person’s expression. This has applications beyond portraits—for example, macro photographers use bokeh to highlight tiny details, and sports photographers use it to isolate athletes from the surrounding crowd.

How to Get the Bokeh Effect: 5 Essential Tips

Learning how to achieve the bokeh effect requires a balance of camera settings and physical positioning. Here is how you can achieve it consistently.

1. Use a Wide Aperture

The most direct way to achieve a shallow depth of field is to open up your lens. Set your camera to Aperture Priority (Av or A) or Manual (M) mode. Choose the lowest f-number available on your lens, such as f/1.8 or f/2.8. The wider the aperture, the shallower the plane of focus will be, resulting in a more pronounced blur.

2. Increase the Distance Between the Subject and the Background

When your subject is positioned very close to the background, such as against a wall, using a wide aperture on a standard lens may not produce significant background blur. This is because there isn't enough distance to create separation between the subject and the background. Although specialized lenses, such as very fast lenses (e.g., f/0.95) or those with unique optical features, can enhance background blur, they cannot fully overcome the limitations imposed by the close proximity of the subject to the background.

To get those beautiful light orbs, pull your subject away from the background. The farther the background is from the focal point, the more the lens will render it as a soft blur.

3. Get Closer to Your Subject

Your proximity to what you are shooting significantly impacts depth of field. By physically moving the camera closer to your subject, you shorten the focus distance, which naturally causes the background to fall out of focus more aggressively.

4. Choose a Longer Focal Length

A 35mm lens and an 85mm lens will produce very different results even at the same aperture. Telephoto lenses compress the background, making it appear closer and blurrier. Prime lenses in the 85mm to 135mm range tend to produce the best results.

5. Look for Light Points

The most iconic bokeh effect involves "bokeh balls," which are the circular renderings of out-of-focus light points. To achieve this, look for specific light sources in the background, such as sunlight filtering through tree leaves, street lamps, or holiday lights.

Gear Recommendations for Beautiful Bokeh

While technique is vital, your equipment sets the ceiling for what you can achieve. If you’re looking to experiment without a permanent investment, you can rent professional lenses on ShareGrid to see which look fits your style.

Want to know about specific lenses? Check out ShareGrid’s lens tests for comprehensive comparisons and analysis about what each does best.

Common Bokeh Mistakes to Avoid

• Missing the Focus: When shooting at f/1.2 or f/1.4, the plane of focus is paper-thin. If you’re shooting a portrait, ensure the eye closest to the camera is tack sharp.
• Over-Blurring: Sometimes, a background that is too blurry looks like a studio backdrop. Keeping a tiny bit of texture can help the image feel real.
• Cheap Lens "Onion Rings": Lower-quality lenses can sometimes produce concentric circles inside the bokeh balls. High-end glass, like the Canon L-Series or Sony GM lenses, is designed to minimize these optical artifacts.

When the Bokeh Effect Might Not Be Appropriate

It is easy to get bokeh-happy and blur everything, but professional photography requires intentionality. There are times when a sharp background is actually better for the image, such as:

• Landscape Photography: Usually you want the entire vista from the foreground to the horizon to be sharp.
• Environmental Portraits: If the location is a key part of the story (e.g., a chef in their kitchen), blurring the background too much sacrifices the context of the photo.
• Group Shots: With a very shallow depth of field, you might find that one person is in focus while the person standing six inches behind them is blurry.

The goal of bokeh should be to enhance the subject, not to hide a lack of compositional planning.

Learn the Bokeh Effect With Lenses From ShareGrid

Mastering the bokeh effect is a rite of passage for many photographers. By understanding the relationship between your aperture, focal length, and physical distance, you can transform ordinary scenes into cinematic masterpieces. By experimenting with different lenses and lighting conditions over time, you can find your unique bokeh signature.

Frequently Asked Questions About the Bokeh Effect

Can I get bokeh with a smartphone?

Yes, most modern smartphones feature a Portrait Mode, which uses software and multiple lenses to simulate the bokeh effect. However, even the most advanced smartphone cameras tend to struggle with complex edges like hair, making a dedicated camera and lens superior for natural results.

What is the best f-stop for bokeh?

Generally, the lower the f-stop, the better. Common favorites include f/1.4, f/1.8, and f/2.8. However, even f/4 can produce great bokeh if you use a long telephoto lens and have plenty of distance from the background.

Does sensor size affect bokeh?

Indirectly, yes. Full-frame sensors allow you to get closer to your subject or use longer focal lengths for the same framing compared to a crop (APS-C) sensor, which results in a shallower depth of field.

Why is my bokeh not circular?

The shape of the bokeh is determined by the shape of the aperture opening. Lenses with more aperture blades (usually 9 or more) produce rounder bokeh, while older or cheaper lenses might produce hexagonal or octagonal shapes.

How do I make bokeh shapes?

You can create custom shapes (like hearts or stars) by cutting a shape out of black cardstock and placing it over the front of your lens. When you shoot wide open at light points, the bokeh will take the shape of your cutout!