In dark churches this may push your iso to 3 200 plus.
Best light modifier for group shots.
The key to creating even light across a large group portrait is focusing the light direction to control the spill as much as possible.
But for a really big group i just use bare speed lights and spread them out lots of them as i have several 560 iii s and i d rather just set them up and position them to light everyone.
The following 5 modifiers are very reliable easy to use and they can bring dramatic results once you master the art of controlled lighting.
A 5diii or d800 has no problem handling this.
For our family shot the sun had just set behind the mountain in front of us which left us with nice open shade and indirect light as we faced the setting sun.
Set up your two off camera flashes modified with the wescott shoot through umbrellas on light stands raised to about 5 6 feet to avoid campfire lighting and to get the best light spread.
When i m using large modifiers for group i like to reflect off the modifier not shoot through shoot through has a hotter spot typically.
45 degrees to window aperture.
Bring your ambient light up to 1 stop under exposed.
Indoors with clean window light.