Is Sigma's 300-600mm f/4 Your Ideal Super-Telephoto Lens?

The Sigma 300-600mm f/4 DG OS Sports Lens is filling a noticeable gap between typical telephoto zooms and ultra-expensive super telephoto primes. If you've been struggling to find a high-quality lens without reaching into the $10,000-plus range, Sigma's latest offering might be precisely what you're looking for.

Coming to you from Dustin Abbott, this comprehensive video provides a close look at Sigma's ambitious 300-600mm f/4 DG OS Sports lens. Abbott highlights the attractive pricing—around $6,000—which is significantly less than buying multiple prime lenses with comparable focal lengths. What's most intriguing here is the consistent f/4 aperture through the entire 300-600mm zoom range. Usually, lenses at these longer focal lengths sacrifice either speed or flexibility, but Sigma has managed to keep performance remarkably balanced. Abbott also points out the lens' superior optical stabilization, outperforming even some of Sony’s own lenses in practical use. Whether you're shooting wildlife, sports, or action, that stability could be a critical advantage.

Abbott’s hands-on exploration shows that Sigma hasn’t cut corners on build quality. Featuring an innovative tripod collar with selectable click stops and an Arca-compatible foot, this lens is thoughtfully designed for practical use in the field. Because of the lens’ massive front element, traditional filters aren't an option. Sigma addresses this with drop-in polarizers and neutral density filters. Additionally, Abbott covers the unique functionality of Sigma's new power-focus ring, allowing quick and precise manual adjustments—ideal for complex scenarios such as focusing through branches or other obstructions.

Key Specs

• Focal Length: 300-600mm

• Maximum Aperture: f/4

• Lens Mount: Sony E, Leica L

• Autofocus: Yes (High-speed Linear Actuator Motor)

• Image Stabilization: Optical stabilization (up to 6 stops at 300mm, 5.5 stops at 600mm)

• Filter Size: 40.5mm (Drop-In)

• Minimum Focus Distance: 9.2 ft (300mm) to 14.8 ft (600mm)

• Maximum Magnification: 0.17x (at approximately 470mm)

• Optical Design: 28 elements in 21 groups

• Aperture Blades: 13, rounded

• Dimensions: 6.6 x 18.5 inches

• Weight: 8.75 lbs (3.97 kg)

In practical testing, Abbott noted some minor autofocus inconsistencies when compared directly to top-tier Sony lenses. While it provides strong overall performance, expect occasional slight misses in critical moments if you demand absolute perfection every frame. Despite this, Abbott emphasizes that most users would find the autofocus more than sufficient, particularly for wildlife and action photography.

One important consideration Abbott raises pertains specifically to Sony shooters: compatibility limitations prevent using teleconverters, significantly restricting the lens’ potential reach. Sigma's L-mount version, however, fully supports Sigma's teleconverters, dramatically increasing versatility with focal lengths up to 1200mm.

Ultimately, the lens is a compelling choice, delivering a blend of affordability, versatility, and high-end performance rarely seen in one package. Check out the video above for the full rundown from Abbott.