I have limited experience w off camera flash. I have never had a problem getting the flash to fire indoors.

The other day I decided to set up off camera flash outside to capture shots of my bird feeder. I used an SB700 on a light stand and put my camera in comander mode.
I had difficulty getting the flash to fire.
Is using the camera's pop up flash to remote trigger not recommened outdoors?
Do I need a radio trigger?

I also have a vivitar flash I tried to use in slave mode this also would not fire.

I could get both flashs to fire when I got within a few feet of the flash but I wanted to fire from approximately 20 feet behind and slightly to the side of the flash.

Any advice?

JohnE Nikon

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"Cameras and lenses are simply tools to place our unique vision on film. Concentrate on equipment and you'll take technically good photographs. Concentrate on seeing the light's magic colors and your images will stir the soul." Jack Dykinga