Sigma 24-70mm f/2.8 EX DG HSM IF Lens for Canon EF-Mount {82}

Sigma's f/2.8 workhorse covering the full event range

The 24-70mm f/2.8 focal range is the backbone of professional event and documentary work, and Sigma's EX DG HSM version brings constant f/2.8 aperture to Canon EF shooters at a price point well below the first-party option. The HSM (Hypersonic Motor) drive delivers fast, quiet autofocus, a real consideration when you're working a reception or a ceremony where noise carries. The EX designation signals Sigma's professional-grade construction tier, and the 82mm filter thread accommodates serious glass up front.

Internal focusing keeps the barrel length fixed during focus pulls, which matters for shooting with polarizers or graduated NDs. At 24mm you have genuine wide-angle coverage for environmental portraits and tight venues; at 70mm you're reaching into short telephoto territory for compressed head-and-shoulder frames. That range covers most what most photographers shoot in a given day without touching another lens.

For Canon EF bodies from crop sensors through full-frame, this lens gives you a single zoom that handles available light, fill-flash work, and daylight shooting without compromise on aperture.

Who It's For

Wedding and event photographers who need a single zoom through a full ceremony will find the constant f/2.8 aperture essential for mixed lighting and fast-moving subjects. Photojournalists and documentary shooters benefit from the 24-70mm range as a primary lens that covers wide establishing shots through tight subject framing. Portrait photographers working on location appreciate the 70mm end for natural head-and-shoulder compression. Studio photographers shooting products or editorial work on Canon EF systems get a reliable standard zoom with internal focusing that keeps polarizer alignment intact.

Key Features

• 24-70mm constant f/2.8 aperture for available-light event coverage
• HSM Hypersonic Motor delivers fast, quiet autofocus during ceremonies and receptions
• Internal focusing maintains fixed barrel length with polarizers and graduated NDs
• EX professional-grade construction tier
• 82mm filter thread for serious front-element glass
• Canon EF mount for full-frame and crop-sensor bodies

FAQ

Is this a full-frame or crop-sensor lens?

It works on both. The EX DG designation means it's designed for digital bodies across Canon's EF lineup, from crop sensors like the 7D through full-frame bodies like the 5D series.

How does the HSM autofocus perform during video or live events?

The Hypersonic Motor is fast and quiet - critical when you're shooting ceremonies or receptions where AF noise carries. It's not silent, but it won't ruin audio the way older AF motors would.

What's the practical difference between 24mm and 70mm for event work?

At 24mm you get wide environmental coverage for tight spaces and establishing shots. At 70mm you're into short telephoto range, giving you compressed subject-to-background ratios for closeups. That spread handles 90% of event situations without a lens change.

Does internal focusing matter if I'm using filters?

Yes. The barrel stays fixed length during focusing, so polarizers and graduated NDs hold their orientation and don't rotate as you focus. That's the practical reason Sigma built it this way.

Can I use this on a crop-sensor body like a 7D or 80D?

Yes. At 24-70mm on a 1.6x crop body, you're effectively shooting 38-112mm, which is still a usable event range - tighter on the wide end, longer on the telephoto.

How does this compare to Canon's native 24-70mm f/2.8L?

Sigma's version is significantly cheaper and delivers comparable optical performance for event work. The HSM motor is quieter than older Canon AF systems. Canon's version has weather sealing and a wider professional ecosystem, but this lens handles the actual shooting.

What size filters do I need?

82mm. That's a standard professional size, so you have options for quality glass without paying a premium for oversized filters.