What is a wide angle lens setting and how to get it?

I have a Nikon D and would like to know how to take a wide angle lense shot on a wide angle lens setting, without uding a wide angle lens.

The wide angle lens is required for what you're trying to do

You have a fully adjustable camera which uses interchangeable lenses. It is NOT like a camera you find in a mobile and might use apps to create the look of different focal length lenses.

You need to spend some time learning the fundamentals of photography and include learning all about how cameras and lenses actually work.

You have a fine camera, but sadly none of the skill nor understanding of how it is supposed to work.

Here is a link to the wide angle lenses made for Nikon D cameras.

The second link shows you what various focal length lenses "see"

The term "wide angle setting" isn't accurate. There's no button to press or a setting to choose. The lens that you're using will either have a wide-angle position or it won't. Using 35mm-format as a standard (35mm refers to the size of the sensor/film and not the lens), any lens that has a focal length less than or equal to 35mm is considered a wide angle lens. Some will argue that since a 50mm is a "normal" lens, that anything less than 50mm should be considered wide angle. It's up to you.

APS-C format cameras have a 1.6x crop factor, which means that since the sensor is smaller than 35mm format, it will record less than what the lens can actually see. To figure out what the equivalent focal length of an APS-C lens would be in 35mm format, you just need to multiply the focal length of the APS-C lens by the 1.6x crop factor. Dividing a 35mm format lens by 1.6x will give you the focal length needed to obtain the same angle of view when using an APS-C format camera.

Cameras with smaller sensors will have a larger crop factor. Smartphones, for example, have a 5.6x crop factor.

You do not need a wide-angle lens to get a wide area into the photograph.
If you want to take a wide-angle shot without using a wide-angle lens, then you must take a series of shots of the area that you want in the final image. Then take those images and combine them using some kind of photo-editing software such as Photoshop. I often find myself in situations where the angle of my widest lens isn't wide enough. In these situations, I take a series of photographs from bottom left to bottom right, overlapping images by about 25-50%. You can do a single row from left to right, or you can do multiple rows too. Do a YouTube search for panorama photos, and you'll see how it's done.

I'll tty and put this as simply as possible.

You have a DSLR.

It uses interchangeable lenses.

It probably came with an 18-55mm kit lens. The 18mm focal length IS wide angle.

If you want a wider angle shot, you need to mount a wider angle lens. Less than 18mm.

Nikon dSLR? No such thing as a wide angle lens setting. You need to use a wide angle lens to get a wide angle shot. The 18-55mm kit lens is wide angle from 18mm to around 24mm.

In any "crop-frame" DSLR, such as the "D" series Nikons, the "standard" lens setting is around 30mm, and anything significantly shorter (e.g. 24mm, 18mm) goes towards wide-angle. With you kit zoom lens you have 18mm, a good "medium wide" setting.

If you want to buy a good quality lens significantly wider than 18mm (maybe starting around 10mm or 12mm)you will need to spend good money, about as much as you have already spent on the camera with its kit zoom lens.

Do not think about cheap "add-on adapter lenses" - they give poor quality images.

Do a YouTube search for panorama photos, and you'll see how it's done.

Adding any lens is shown(the field of view) in the veiwfinder of any DSLR camera simply because you are looking through the lens that is in fact the "taking" lens of the camera.