3 Speedlight Athletic Portrait in a Gym with Tom Bol and Rogue Modifiers 

Yesenia Gonzale sounds good to me, but my nissin flashes zoom only when I zoom my lens focal length, so I cant zoom the flash separately from the lens. Maybe you can though. Cheers

Hi Yesenia, Great question! Adjusting the zoom on the lens works great for focusing light, but a grid will give you a tighter focus than zooming the flash will. In addition, Rogue Grids also prevent spill of light on areas of the frame you wouldn't want illuminated. Let us know if you have any other questions, we'll be more than happy to assist. Regards, -The ExpoImaging Team

With zoom lens you zoom the picture and not the light on the object. With grid you focus the light on the person or object.