Try this experiment:
- Turn off your camera.
- Mount your kit lens on your camera body.
- Set the lens focal length to the shortest possible setting (lowest number on the zoom ring).
- Set the Mode Dial to Aperture Priority.
- Rotate the Sub-Command Dial on the camera body until the largest aperture (lowest value) appears in the Control Panel.
- 24mm: f 4.0
- 35mm: f 4.8
- 45mm: f 5.3
- 50mm: f 5.6
- 70mm: f 4.5
- 85mm: f 4.8
- 200mm: f5.6
Prime Lenses, Fast and Cheap: In an earlier post I referred to two non-zoom lenses (called fixed focal length, or prime, lenses) that, by comparison, allowed much more light to pass through. These would be the 35mm 1.8 and the 50 1.8 lenses, each costing a little more than $200.00 to own. If you plan on doing much low-light work, consider buying, or renting, one of these lenses. However, if you only have prime lenses and decide that need a different focal length of your lens, expect some delays while you change lenses.
Nikon still manufactures prime lenses for lens "purists" and those photographers who need ultra high speed lenses. Be warned, when you venture beyond the so-called "normal" lenses, the prices can be astronomical.