complex metering and multiple light sources... (troubleshoot)
I'm using Hp5, at Ei 200
I'm also using a sekonic 758D.
I'm using a Metz 58-af1 flash gun
Situation / objective / previsualization:
the sun is behind to the left, and is being used as a hair light
a flash is in the fron to the right, and is being used as a fill light.
My objective is trying to render the background (sky + clouds) darker than the subject. (i.e. portrait)
My process + problem:
Metered the sky (using a reflective spot meter) and added two stops to render the background nice, dark and moody (the way I wanted)
(example: meter read f/11 1/250 --> I dialed in f/22 at 1/250)
THe problem, i'm not sure how to dial in my flashgun to get the correct exposure for hte subject
used the guide numbers, to dial in the exposure.
(example (at power: 1/-1/3, distance is 1.9 meters (which is the distance from teh subject)))
problem #2: is when i then change my meter to reflective it is reading a very weird value: (i.e. 1/250 f/5.6). Which is a far cry what I have already dialed into my flash gun.
Do I trust my guide numbers or my meter? Shouldn't they match?