Question 1

Is the Sigma 300mm f/2.8 EX DG APO HSM compatible with my Canon DSLR?

Accepted Answer

Yes — this lens uses the Canon EF mount, which fits every Canon EF DSLR body ever made, from entry-level Rebels to the full-frame 5D and 1D series. The EF mount has no mechanical aperture lever, so communication between body and lens is fully electronic and works reliably across the Canon lineup.

Question 2

How does the HSM autofocus perform on the Sigma 300mm f/2.8?

Accepted Answer

HSM stands for Hypersonic Motor — Sigma's ultrasonic AF drive that moves the focus group quietly and quickly. On a 300mm telephoto, fast AF acquisition matters a lot for moving subjects like athletes or birds. Full-time manual focus override is also available without switching the lens out of AF mode, which is handy for fine-tuning focus on a locked subject.

Question 3

What does 'APO' mean on this Sigma lens, and why does it matter?

Accepted Answer

APO stands for apochromatic — it means the lens is designed to bring multiple wavelengths of light to the same focal point, which reduces chromatic aberration (color fringing). At 300mm, even small amounts of CA can show up on high-contrast edges like a bird against a bright sky. The APO designation is Sigma's way of saying this optical design takes that problem seriously.

Question 4

Can I use teleconverters with the Sigma 300mm f/2.8 EX DG APO HSM?

Accepted Answer

A 300mm f/2.8 is one of the classic lenses to pair with a 1.4x or 2x teleconverter — you get 420mm f/4 or 600mm f/5.6 respectively. Sigma makes its own TC series compatible with EX lenses, and Canon teleconverters may also work depending on the body and converter version. Always check specific TC compatibility before buying, as not every combination will retain autofocus.

Question 5

How does the Sigma 300mm f/2.8 compare to the Canon EF 300mm f/2.8?

Accepted Answer

The Sigma holds its own optically — independent reviewers have noted it compares favourably to Canon's native 300mm f/2.8, with strong contrast and sharpness. The main trade-off is that Canon's own lens guarantees first-party AF compatibility and firmware update paths, while the Sigma typically comes in at a lower price point on the used market, making it an appealing option if budget matters.

Question 6

Is buying a used Sigma 300mm f/2.8 a smart move?

Accepted Answer

For a lens this size and price class, the used market is exactly where experienced photographers shop. The Sigma 300mm f/2.8 EX DG APO HSM is a robust, professional-grade telephoto — built to take punishment in the field. Every used lens on Camera-tweedehands.nl is professionally inspected and comes with a minimum 12 months warranty, so you get the peace of mind of a second-hand price without buying blind.

Cart (0)

Sigma 300mm f/2.8 EX DG APO HSM - Canon EF

Get notified when available

Do you have a Sigma 300mm f/2.8 EX DG APO HSM - Canon EF?

About the Sigma 300mm f/2.8 EX DG APO HSM - Canon EF

Key Specifications

Who is this lens for?

Frequently asked questions