it depends what you want to shoot. dslr lens have thier special abilities to capture what you want. thats the beauty of it.
Sports for example, you end up using AF 80-200mm f/2.8D ED orAF-S VR 70-200mm f/2.8G IF-ED as you need the distance and the speed to capture the fast motion
Landscape you would likely use like Sigma 10-20 or nikkor 12-24 to try to get a wider view of the landscape.
Marco lens usually allows you to focus the subject at a closer range.
what else? hm..:dunno:
Roger That.... wat about single mm lens ie... 50mm or 60mm... w/o zoom feature rite... shaper picture rite... wat else...