The Beginner’s Guide to Prime Lenses: Elevate Your Photography and Video

Hand holding a 50mm Canon prime lens | Photo source: Mallem Amir on Pexels

Key Takeaways

• Fixed Focal Length: Prime lenses do not zoom; they have a single, set focal length.
• Superior Sharpness: With fewer moving glass elements, prime lenses generally offer higher image quality than zooms.
• Low Light Performance: Most prime lenses feature wider apertures (like f/1.8 or f/1.4), making them ideal for dim environments.
• Creative Discipline: Using a prime lens encourages "zooming with your feet," which improves compositional skills.
• Cost-Effective: In general, prime lenses are less expensive than zoom lenses because they have fewer moving parts and glass elements. For example, entry-level 50mm prime lenses, often called "nifty fifties," deliver professional-quality results at a surprisingly affordable price.

Whether you’re unboxing your first mirrorless camera or looking to level up your cinematography, you will eventually face a pivotal choice: prime or zoom lens? A prime lens is often the first major investment a creator makes after outgrowing their kit lens. Known for their sharpness and fast apertures, these fixed focal length tools force you to think differently about composition. 

What is a Prime Lens?

A prime lens is a photographic or cinema lens with a fixed focal length, meaning it has a set angle of view that can’t be changed. Unlike a zoom lens, which allows you to rotate a ring to get a closer view of a subject, a prime lens requires you to physically move your body to reframe the shot.

Prime lenses are designed to focus on a specific focal length, which typically allows them to provide better optics and wider maximum apertures than zoom lenses. However, high-end professional zoom lenses have made great progress in matching this quality, delivering exceptional image sharpness that rivals that of prime lenses. This level of performance often comes with a higher price tag and increased weight, though.

Common focal lengths include 35mm for street photography, 50mm for general use, and 85mm for portraits.

What is a Prime Lens Used For?

A prime lens is typically used to achieve maximum image sharpness, create a shallow depth of field, and capture images in low-light conditions. Professionals often favor prime lenses for portraits and high-end cinematography, where bokeh and optical clarity are priorities. However, the trade-off is that prime lenses lack the speed and focal-length flexibility of zoom lenses, which are commonly used for live events such as weddings and sporting events.

Prime Lens vs Zoom Lens: the Core Differences

The debate between a prime lens vs zoom lens usually comes down to a trade-off between convenience and quality.

1. Image Quality and Sharpness

Zoom lenses require complex internal construction with many moving glass elements to maintain focus while changing focal lengths. This complexity can lead to photos that have a soft quality or contain chromatic aberration. In contrast, a prime lens is optimized for a single focal length, resulting in images that are usually sharper from corner to corner.

2. Maximum Aperture and Speed

Lenses with a wide aperture are commonly known as "fast" lenses. This term refers to lenses with a wide maximum aperture, typically represented by a low f-stop number, ranging from f/0.95 to f/2.8. These apertures are often found in prime lenses. A wide aperture allows significantly more light to enter the lens than a standard lens with a higher f-stop number, such as f/4 or f/5.6, often seen in zoom lenses. Additionally, professional fast zoom lenses are available with apertures ranging from f/1.8 to f/2.8.

3. Size and Weight

While most professional "cine primes" are quite heavy, many consumer and prosumer photography prime lenses are significantly smaller and lighter than their cine lens counterparts. Additionally, cine lenses often have a long focus pull, which requires a follow focus system and a dedicated focus operator to manage. As a result, smaller productions, such as run-and-gun video shoots, typically use non-cine lenses.

Should You Use Prime or Zoom Lens for Videography?

Whether a prime or zoom lens is most suitable for videography depends on your production style.

Use Prime Lenses if:

• You’re filming a scripted project where you have time to swap lenses.
• You want a cinematic look with a very blurry background.
• You’re filming in a controlled environment with limited light.
• You want to maintain a consistent look by using a specific focal length.

Use Zoom Lenses if:

• You’re shooting "run-and-gun" style (such as in documentaries or live events).
• You can’t physically move closer to your subject (such as in sports and recording wildlife).
• You need to be able to change your framing instantly.

Many cinematographers on ShareGrid rent prime sets, which allows them to have 24mm, 35mm, 50mm, and 85mm lenses that all share the same color characteristics and physical dimensions, making it easy to swap them out on a gimbal or rig.

How to Use a Prime Lens Effectively

Learning how to use a prime lens effectively is a rite of passage for every creator. Since you can’t rely on a zoom ring, you must become more active in your process.

1. Zoom With Your Feet

The most important rule of prime lenses is movement: if the subject is too small in the frame, walk toward them; if you can't fit everything in, walk backward. This physical movement often leads to discovering more interesting angles you would have missed while standing still with a zoom lens.

2. Master the Depth of Field

Because primes allow for wide apertures, it’s easy to accidentally blur out the wrong part of your subject. For example, if you’re shooting at f/1.4, the plane of focus is paper-thin. When shooting portraits, always ensure the eye closest to the camera is the point of focus.

3. Embrace the Constraints

Constraints breed creativity. By sticking to one focal length for an entire shoot, you’ll develop a feel for that frame. Eventually, you’ll be able to look at a scene and know exactly where to stand to get the shot before you even lift the camera to your eye.

Why Renting Prime Lenses Makes Sense

High-quality lenses are expensive: a professional-grade 35mm f/1.4 can cost upwards of $1,500. For many creators, renting is the most logical path to professional results without the massive overhead.

On ShareGrid, owners often list "Lens Kits." Instead of buying one lens, you can rent a full set of cinema primes for a fraction of the cost. This allows you to test different brands (like Canon L-Series, Sony G-Master, or Sigma Art) to see which suits your style best.

Frequently Asked Questions About Prime Lenses

Are prime lenses better than zoom lenses?

"Better" is subjective. Prime lenses are generally sharper and better in low light, while zoom lenses offer more versatility and speed in fast-paced environments.

Why are prime lenses so expensive?

While nifty fifties are cheap, high-end prime lenses use specialized glass elements and coatings to eliminate distortion and maximize light transmission, leading to a higher price tag.

What’s the best prime lens for beginners?

A 50mm f/1.8 is widely considered the best starter prime lens. It is affordable, lightweight, and offers a natural field of view similar to the human eye.

Can I use a prime lens for street photography?

Yes, prime lenses are the gold standard for street photography. A 35mm prime lens is small, inconspicuous, and fast enough to capture candid moments in changing light.

Do prime lenses have image stabilization?

Some do, but many rely on the camera's Internal Body Image Stabilization (IBIS). Because prime lenses have fewer moving parts, they often don't include built-in stabilization.