I had an interesting experience while shooting with my D7000 with SB-600. I would love to get your thoughts on how this camera meters the scene with a speedlight for indoors and outdoors.
I was shooting at a BBQ recently and the setting was mixed. Guests were sitting in a tent with very little lighting (semi indoors) and kids were playing in the grass right next to the tent (complete outdoors) and it was a bright sunny day. So i had to constantly go in and out and adapt to shooting conditions instantly to not lose a shot.
I had my D7000 on Auto-ISO with a max of 3200 ISO, Aperture mode.
Situation #1 (Outdoor): I took some shots of a kid running around in the grass with my flash on and the shots came out way over exposed. I had set the Aperture to be f/7.1 and camera metered shutter at 1/250 and ISO at 1000. Metering mode was "Pattern" for all my shots.
For this situation I think the camera did not take into account the flash and calculated the ISO unnecessarily high.
Situation #2 (Outdoor): I then turned off the Auto-ISO and had it fixed at ISO 100. Flash was on and the Aperture was f/9.0 and the camera metered shutter at 1/80 and the shot came out properly exposed. Same setting.
I think that turning off Auto-ISO was necessary in this situation to get the correct exposure.
Situation #3 (Indoor): Using Aperture priority with f/5.6 I had Auto-ISO on. Camera metered shutter at 1/60 and ISO at 800 with flash on. The shot came out way overexposed.
Again I feel that with the Auto-ISO on, camera did not take into account the contribution of flash to the exposure. The ISO should not have been that high.
Situation #4 (Indoor): Turned off Auto-ISO. With aperture at f/5.6, camera metered shutter at 1/100 and with fixed at 100 and flash on. The picture was properly exposed.
Again I concluded that having Auto-ISO on was a mistake.
I would love to hear your opinions and experiences about this and perhaps get some advice on what I might have been doing wrong if I completely missed in using Auto-ISO properly.