[font color=\'#000000\']No, such a thing does not exists.
DSLRs, like the D70, do not generate a live image. You have to take the photograph prior to seeing the image. Digicams though have a "live" chip and you can preview the image before exposure. You may want to look at one of the high-end digicams with a large LCD screen, as this may meet your needs.
The Leaf Valeo 22Wi[/font]