Sigma 28-70mm f/3.5-4.5 UC Zoom Lens for Pentax AF

Name: Sigma 28-70mm f/3.5-4.5 UC Zoom Lens for Pentax AF
Brand: Sigma
SKU: SGPT2870
Price: 35.96 USD
Availability: InStock
Rating: 4.6 (5 reviews)

Sigma 28-70mm f/3.5-4.5 UC Zoom Lens for Pentax AF - Main image

Sigma 28-70mm f/3.5-4.5 UC Zoom Lens for Pentax AF - View 2

$35.96 ~~$49.95~~ In stock

Category: Lens

The Sigma 28-70mm f/3.5-4.5 UC is an auto-focus zoom lens designed for Pentax cameras. It covers a versatile 28-70mm focal range, making it suitable for everyday shooting.

Brand: Sigma
Focal length range: 28-70mm
Aperture range: f/3.5-4.5
UC (Ultra Compact) zoom lens
Auto-focus operation for Pentax cameras

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Customer Reviews (4.6 / 5 · 5 reviews)

Violet ★★★★★ Oct 22, 2026

I've been using this lens for a few weeks now and the autofocus on my Pentax body is impressively quick and quiet. The 28-70mm range is perfect for walking around town, and the f/3.5-4.5 aperture works fine in decent light.

Eli ★★★★★ Oct 21, 2026

The UC design makes this zoom surprisingly light for everyday carry, and the 28-70mm range covers most of what I shoot without swapping lenses. Autofocus is quiet enough for candid shots during family outings.

Nicholas ★★★★★ Oct 20, 2026

The autofocus on this 28-70mm locks on quickly even in mixed light, and the compact size makes it perfect for slipping into a bag. I’ve used it for everything from portraits to landscapes, and the sharpness across the zoom range has really impressed me.