Canon Speedlite 430EX III-RT review

The latest Mk III edition of Canon’s ever-popular flashgun is full of great tricks, with radio triggering and intuitive controls

Canon Speedlite EX 430EX III-RT
(Image: © Matthew Richards)

Digital Camera World Verdict

The 430EX III-RT packs plenty of high-end features into a compact and lightweight package. However, the lack of an optical wireless master facility or stroboscopic multi-flash mode are disappointing.


  • +

    Intuitive interface with four-way pad with a rotary dial

  • +

    Good value

  • +

    Built-in radio trigger

  • +

    Excellent exposure


  • -

    Modest maximum output

  • -

    No AF assist beam with EOS R system

Why you can trust Digital Camera World Our expert reviewers spend hours testing and comparing products and services so you can choose the best for you. Find out how we test.

The third generation of the Canon's most popular flashgun takes on from the Speedlite 430EX and 430EX II. Launched in 2015, the Canon Speedlite 430EX III-RT packs the same powerful punch but adds plenty of new thrills. The most clearly visible differences are around the back.

(Image credit: Matthew Richards)

Thank you for reading 5 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

Matthew Richards

Matthew Richards is a photographer and journalist who has spent years using and reviewing all manner of photo gear. He is Digital Camera World's principal lens reviewer – and has tested more primes and zooms than most people have had hot dinners! 

His expertise with equipment doesn’t end there, though. He is also an encyclopedia  when it comes to all manner of cameras, camera holsters and bags, flashguns, tripods and heads, printers, papers and inks, and just about anything imaging-related. 

In an earlier life he was a broadcast engineer at the BBC, as well as a former editor of PC Guide.