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km6xz

St Petersburg, RU
3559 posts

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"RE: d 7K and SB 700"

km6xz Moderator Awarded for his in-depth knowledge in various areas, including Portraits and Urban Photography Nikonian since 22nd Jan 2009
Sun 04-Nov-12 06:37 PM

Balanced fill only works in Matrix metering since the meter needs to determine the overall scene illumination, which it can't do in spot or center weighted. The flash also needs to be in TTL BL mode. Stepping through the modes and TTL BL will be an option if the flash is mounted on the shoe and it is in Matrix.
2-3 Stops in TTL mode is a good way to ensure that the subject will be illuminated normally by the flash's metering but the background will be darker. How much darker? Well that will be the 2-3 stops lower but with the addition of flash light that falls on background elements near the focal plane of the subject. A receded background will potentially look 2-3 stops under exposed. A background closer to the subject will be some level between the flash level on the subject and the ambient 2-3 stops down.
The more the flash has to make up for the low ambient the more power it will generate so if shooting an event that will require hundreds of shots, increasing the exposure due to ambient will mean lower flash power is generated. Based on the discussion above, you would also expect the background would be more illuminated by ambient light as well.
It is easy to experiment buy getting a wig styling dummy head for $5 from a beauty supply shop and set it in the middle of a darkened room. It is a lot more patience for experiments than a human model. That way you can leisurely explore flash, fill, bounce, apparent size of the light source. When you see the difference with good bounce technique(which is rarely used by hobbyists, usually we see people using bounce from ceilings bounce point mid way between the photographer and subject which creates rather unflattering shadows and raccoon eyes, or using a bounce card as the main light source.)Trying some of the methods described on blogs is a good way to separate the wheat from the chaff of lighting technique.
This thread is more about flash than D7000 so we might move it to the flash forum.
Stan
St Petersburg Russia

Visit my Nikonians gallery.

A general, generic topic d 7K and SB 700 [View all] , hankwt , Thu 01-Nov-12 10:45 PM
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