The Sigma 18-50mm f/2.8: Balancing Performance and Portability

The Sigma 18-50mm f/2.8 DC DN zoom lens offers a mix of performance and versatility for those using Fujifilm cameras. This great video review takes a look at what you can expect from it in real-world usage.

Coming to you from Dylan Goldby, this insightful video reviews the Sigma 18-50mm f/2.8 DC DN lens. Goldby, who typically prefers prime lenses, found himself needing a zoom lens occasionally, leading to his purchase of the Sigma.

Goldby highlights the build quality of the lens, noting its premium feel comparable to Fujifilm’s lenses. However, he points out design differences that might annoy regular Fujifilm users. For instance, the focus ring's position and the zoom ring's rotation direction are opposite to Fujifilm's standard, disrupting muscle memory. Additionally, the lack of an aperture ring is a significant drawback for those accustomed to Fujifilm's ergonomics.

Despite these issues, Goldby praises the lens for its practicality. Its compact size and light weight make it convenient for various shooting scenarios. The lens' versatility in focal lengths—from wide angle to short telephoto—allows for a range of compositions, making it useful for travel, event photography, and general use. The constant f/2.8 aperture throughout the zoom range is a significant advantage, providing consistent exposure and depth of field control.

In terms of image quality, the Sigma 18-50mm performs well for its class. Sharpness is good across the frame, with the center being particularly sharp at all focal lengths and apertures. The corners are softer, especially at 18mm, but improve as you stop down the aperture. Vignetting is noticeable at wider apertures but corrects easily by f/4. Chromatic aberration is minimal and well controlled. Flare and ghosting are generally well handled, although shooting directly into the sun can cause some ghosting.

Autofocus performance is another strong point. Driven by a stepping motor, the autofocus is fast and accurate, suitable for various shooting conditions. However, the lens lacks optical image stabilization (OIS), which could be a disadvantage for users without in-body stabilization (IBIS) in their cameras.

Goldby appreciates the lens' ability to deliver decent image quality across a range of focal lengths. He finds it particularly useful for scouting locations and casual shooting, where the flexibility of a zoom lens is beneficial. Check out the video above for the full rundown from Goldby.

Alex Cooke's picture

Alex Cooke is a Cleveland-based portrait, events, and landscape photographer. He holds an M.S. in Applied Mathematics and a doctorate in Music Composition. He is also an avid equestrian.

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