Zoom on Flashes

[Canonboi]

What does it mean when Strobist says "zoom your flash to 85mm"? Can I zoom my 430EX II?

Thanks.

[rjc1]

press the zoom button, (upper right) it will scroll through your choices.
You should read the manual, more than once if your like me,that way you will have a better understanding of it functionality.

[apersson850]

If you have the flash on the camera acessory shoe, it will even zoom automatically.

[Curtis N]

"Zoom your flash" means the flash tube and reflector inside the flash head move forward and back, producing a wider or narrower beam of light. The "85mm" part means it will create a beam of light wide enough to cover the field of view of an 85mm lens on a full frame (35mm) camera.