Speedlights are awesome! They are portable and yet really robust as to what they offer. I guess that is why some of them run upwards to around $400+.

One of the features many have is the ability to zoom the flash head. Take my Nikon SB-900s for example, they can zoom from 12/17mm up to 200mm (on my DX/FX camera) which can give me a lot of variations of light. It is almost like a built-in snoot. Here's why: When the flash is mounted to the camera, it automatically zooms to match up with the lenses focal length and sends enough light to spread across the entire scene. Therefore, a wide-angle lens needs a lot of light spread out in order to light up everything properly. On the other hand, light needs to get thrown out, more like a "beam," when using a telephoto lens because it has to go further and cover less of the scene.

The beauty of this really comes into play when you are shooting off-camera with your flash. Take a look at the example image below:



This picture was taken at a recent wedding. I used high-speed sync to darken the background and used my flash off camera to illuminate both the bride and groom. I set the speedlight to zoom all the way up to 200mm so that it would shoot a beam of light directly on the couple's faces and fall off fairly quick. This flash was held as far out as I could in my left hand as I held my camera with my right. I used my Nikon D700's pop up flash as Commander mode only to trigger the off-camera flash for me. I believe the flash was set to +1.3ev as well. My 24-70mm lens was used here because that wide angle allows me to get in close so the flash can be close enough to hit my subjects (inverse square law 101).

Moral of the story, you don't always have time to set up and light a scene the way you want to when it comes to weddings. You have to prepare and pre-plan for these things and roll with the punches. No light stand, no softbox, no assistants holding reflectors. Just me and my flash.

Thanks for stopping by!
Mike