Canon Speedlite 580EX

Power

* Guide number: 58 (ISO 100, 105mm) → very strong flash

* Effective range: up to ~30m depending on settings

Flash control

* E-TTL / E-TTL II auto exposure
* Manual power control
* High speed sync (for fast shutter shooting)

Movement

* Full swivel: 360° rotation
* Tilt: up to 90° bounce

Zoom head

* Auto zoom: 24mm to 105mm
* Built in wide diffuser + bounce card

Wireless

* Can act as master or slave flash
* Uses optical triggering L

Performance

* Recycle time: ~0.1 to 6 seconds
* Shots per set of batteries: ~100 to 700 depending on power

Build

* Weight: ~375g (no batteries)
* Runs on 4x AA batteries

⸻

Real world translation

This was Canon’s top tier flash. Still powerful as hell, fully usable for:

* weddings
* events
* off camera lighting
* bounce flash indoors

Straight take

If you’ve got a Canon DSLR or mirrorless with adapter, this thing still slaps.

If not, it’s basically a €350 brick with a xenon tube inside.