© 2006 KenRockwell.com
Nikon 12 - 24
mm f/4, Tokina 12 - 24 mm f/4, Sigma 10 - 20 mm f/4 - 5.6 and Tamron
11 - 18 mm f/4.5 - 5.6.
Click an image to get it from Adorama. Also try Amazon. It helps me if you get yours at either one.
These lenses see an angle so wide that they can see their own shadow cast by the built in flash. This can take the form of a dark semi-circle at the bottom of the image.
These are the widest settings you can use with the built-in without any shadowing with an ordinary 6.45mm thick (excluding male threads) Tiffen Haze-1 filter and no hood. Without the filter you can go a hair wider. With the hood you're out of luck at any focal length and would need to use an external flash instead.
The Sigma and Tamron are better because they are shorter.
Widest Unshadowed Setting on D200 with Built-in Flash
* Oddly there's still a slight black bar flat across the bottom that doesn't change as you zoom in.
Widest Unshadowed Setting on D70 with Built-in Flash
The D70's flash pops up less far, so there can be more of a problem.
* Still some minor shadowing
** Still some shadowing