Zoom in your flash when you need more power!
When, for instance, I use a 35m lens and I leave the flash alone, it would light up the entire pictrure.
But if I am short of power? Then I might zoom in the flash manually, to get a more concentrated beam. If I set my flash to 105mm, while leaving the lens at 35mm, it sends the light only to the centre:
And that gives me more light. Which I needed Sunday on the photo walk. Example:
Of course I aimed it down a little, too, there.
So I can use this “extra zoom” setting for two reasons:
- To get vignetting
- To get more power
Simple, really, innit?