http://www.nikonchat.com/nikon-d70-manuals/

Why is the bride out so dark?
White wedding dress and groom in white also. (Young Black) Advanced D70 with wireless flash. Dress perfect images but all the black aces. Used Meter, but the printer "prints too dark." House (During the taking of photographs) had to be set to exposer plus more than 1.3. (Photos look good, but lost detail in dress, but now you can see the faces). Printer had to be restarted. Photos look good "But" why can not the so-called advanced Nikon 70 do a better job, as claimed by Nikon? I had to meters during the day in manual exposure. He took me nuts. I do not have this problem with white skin. But it faces all black. (Sorry for misspelling), but all black faces. (Sorry for lack of spelling)
Shooting in manual is not so bad … I guess it's a relatively new experience for you. Continue practicing and learning from your system measurement of the cameras. Additionally, the Quito matrix metering and usage metering. This way you are not measuring only a small portion image. For people with darker skin, I gauge their skin and dark depending on what they are, fall somewhere in the EV -1. You may also meters with the dress and add EV to is about 1 or so, as you did. Most of all cameras are set to meters from the reflectance of light off a 18% gray card. So when you black meter tends to overexpose and when MEDIC, will tend to underexpose it. He does it because if it is to see black or white, is thought to seeing gray. That's why you need to be familiar with the measurement system of the camera. Learn how to correct situations in which to overexpose or underexpose in.
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