Why Do I Need a Fast Aperture Lens? A Look at the TAMRON Fast Trio Zooms

You may have heard the term “fast lens” or “fast glass.” What does it mean, and why would you need a lens with a fast aperture? Let’s explore the basics of fast aperture lenses from the mirrorless lens experts at Tamron and discuss our fast mirrorless zoom lenses for Sony E-mount cameras, the 17-28mm F/2.8 (Model A046), 28-75mm F/2.8 G2 (Model A063), and 70-180mm F/2.8 G2 (Model A065),(The 28-75mm G2 is also available for Nikon Z mount) that are ideal for anyone who needs fast aperture lenses.

What Is a Fast Aperture Lens?

The “speed” of a lens does not refer to its autofocus speed. Rather, it refers to how much light travels through the lens while the shutter is open – it’s the “speed” of how much light is entering!

This is determined by the size of the lens aperture. A faster lens means the maximum aperture is larger, and more light will hit the sensor compared to a “slower” lens. This is usually expressed in an “f-number.” The smaller this number is (like F2.8), the “faster” the lens is, and vice-versa.

How Can I Use a Fast Aperture Lens?

Fast aperture lenses allow photographers to capture a shallow depth-of-field, meaning the subject is in focus while the background is more blurred. This is great for portraits and for other creative shots.

And when there’s less light available, a fast aperture lens helps you make the most of the light you do have. The large aperture means you can get a clear, crisp shot, even when other lenses may produce blurry images due to the lack of high-quality light, like in the late evening or in a candlelit area.

The Tamron Sony mirrorless fast zooms feature cutting-edge autofocus technology, unbeatable optics, and unique features like moisture-resistant construction and fluorine coating.

If you’ve been looking for a fast lens, Tamron is the right camera lens manufacturer for you. To buy new Tamron lenses, just find one of our authorized Tamron dealers in your area or visit the TAMRON Store today.

If you’ve been looking for a fast lens, Tamron is the right camera lens manufacturer for you. To buy new Tamron lenses, just find one of our authorized Tamron dealers in your area or visit the TAMRON Store today.

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