Like ALL DSLRs you zoom manually assuming you are using a zoom lens and not a fixed prime lens.
answered 1 year, 6 months ago
answered 1 year, 8 months ago
You zoom in and out by adjusting your lens manually.
answered 1 year, 10 months ago
"Power" zoom buttons are typically found on point and shoot and "bridge" cameras. Typically, DSLR cameras like the Nikon D3100 have a rubberized ring on the lens that you manually turn at your own speed to zoom in and out. This is much more efficient and allows you to act faster than using a power zoom lever like the one on your old point and shoot camera.
The Nikon D3100 lens is zoomed manually with a rubbery ring around the body of the lens that you twist back and forth.
If you look at the images of the D3100 that are provided above, and look carefully at the one where you can see the top and side of the lens on the camera body, you can see a "rough" "knurled" area to provide grip when zooming the lens from 18mm to 55mm and all points in between. This type of manual zoom is pretty much a universal feature for all lenses that can mount on a camera body that accepts interchangeable lenses.
Looking at the image above in which the lens and body are facing to the left, you can see another very small rough / knurled area at the very front end of the lens. This is where you can manually focus the lens if you move the switch on the side of the lens from A to M. (Representing Automatic focus and Manual focus respectively.)
Basically Nikon expects that you'll zoom a lot, hence the large zoom ring, and that you'll rarely use manual focus, hence the tiny focus ring.
There is no zoom button on this D3100 that rocks back and forth as on point and shoot cameras, only the manual zoom built into the lens itself.
Hope this helps
answered 2 years, 1 month ago
Yes, it will auto focus. Just tap the shutter release button to focus, hold it down to take the photo. I have owned this camera for about 18 months. It is my first dslr. I absolutely love it. I previously owned a Nikon advanced point & shoot with long zoom. It was waaaay more complicated to use than the d3100.
answered 2 years, 2 months ago