Being away from home this week, I’ll make a brief but useful article.

When you take photos with flash, consider increasing the ISO of your camera! Use the ISO value at which your camera takes pictures where the noise is not visible for printing.

For example, on the D700, I regularly take photos with flash at ISO 800. Compared with the nominal ISO of the camera (200), I gain two stops (200 – 400 – 800). By gaining two stops, I am using four times less flash power to take the same photo (200 -> 400, two times less power, 200 -> 800, four times less power). So I can take four times more photos with the same set of batteries.

So always remember to use a higher ISO when you are taking photos with flash, you can take more photos before changing batteries!