yes
You have to press the depth of field button to release/enable the mirror lockup. While pressing the depth of field preview button rotate the mirror lockup lever clounter clockwise until it stops.
Manual or Aperture Priority.
Generally, you can with all cameras. All you need is a shallow depth of field. You can achieve this by using a low aperture (ex. f/2.8, f/1.8) The lower the f/#, the shallower your depth of field will be.
Infinite, with a suitable lens. In theory, a pinhole camera (which has no lens at all) will have a nearly infinite depth of field, but at the expense of extremely long exposure time.
the F numbers usually refer to the aperture of the lens which controls how much light can enter the camera. it also affects the depth of field.
See the answer to "Why do you get a greater depth of field from a smaller aperture"There's also a great article on it at: http://www.uscoles.com/depthoffield.html
Depth of field on a camera is controlled by the aperture. The aperture is basically the size of the opening in the lens. A large aperture (or opening) creates a shallower depth of field and a small aperture creates a greater depth of field. Aperture, along with shutter speed, determine how much light goes into the camera. The size of the aperture is indicated by the f/stop number. The numbers usually range from about f/1 to around f/64. The smaller the number is, the larger the aperture is and the shallower the depth of field, meaning less space is in focus.Additional AnswerDepth of field is also affected by the focal length of your camera's lens. For any given aperture, longer focal length lenses (telephoto lenses) have a much narrower depth of field than a standard lens, and shorter focal length lenses (wide-angle lenses) have a much wider depth of field than a standard lens.
All nikkor lenses (the name for nikon's lenses) have the same mount design. It is called an F-mount, and with this system any lens will fit any nikon camera. There are differences in some lenses that could change that answer though. If you camera is a DX format, an FX format lens is going to be automatically zoomed in and vice versa. Also some nikon lenses are PC (computer chip inside) and some are not. Some older pre AI Nikon lenses can damage some DSLRs if fitted. A FX lens on a DX camera will give exactly the same field of view as a DX lens of the same focal length on a DX camera. A DX lens on a FX camera will usually only image the center part of the frame with dark corners.
Depth of field in photography is 3-dimensional and is measured from the foreground moving along a horizontal plane towards the background. Maximum depth-of-field means most of the scene is in focus and shallow depth-of-field means the minimum is in focus. Shallow depth-of-field lets you lose the background into a nice blur leaving the foreground in focus - good for portrait photography. In landscape photography you would normally choose the maximum depth-of-field so that distant hills were in focus as well as the middle ground and the foreground - in other words, everything in the field of your vision would be sharply focussed.
Pinhole was a slang term for A. a primitive type of camera with a very small aperture, giving maximum depth- but requiring much light, and B. this still in use- the smallest , and thus the deepest in depth of field aperture of any given camera or lens. My most modern Nikon F-80 has a preselected F/32 pinhole setting ( coded in as M) on the modal dial) this is great for distance shots of skyscrapers and the like on bright days only! Photo sensors will shift to a brighter aperture if there is anadequate light- such is progress. l25 ( shutter speed) and F-32 can work wonders with buildings.
When you focus not every thing in front of the camera will be in sharp focus.Away from the camera something will be in focus.(all before this will be gradually blurred.)Now from this "in-focus" point to some more distance things will look sharp. After that point things will again gradually blurr.The area between these two points, within which things look sharp is called depth of field. What will be the distance between these two points or what is the range of septh of field? It mainly changes with the aperture setting. It is an 'inverse' relation; larger the aperture, lesser the depth of field. (Some lenses have a scale for this on their rings.) Sometimes we want to 'fix' the depth of field.Modern DSLRs help us achieve this in a particular setting.That setting is called auto depth of field priority setting. How you actually do it depends on the camera brand. There are good sites. Please try youtube with this phrase "setting auto depth of field in canon' for example.
If you are using a compact camera, digital or otherwise, the lens probably has no markings you can use. In this case, you will have to obtain a depth of field chart. If the camera has a depth of field scale on top of the lens barrel, you locate the f stop (the number) being used for the shot on both sides of the center dividing line and estimate the corresponding distances that line up with those numbers to get the depth of field as a range in feet or metres.Describing this in words is virtually impossible, so the best I can suggest if you did not grasp the above, is to read up on it in your camera manual or Google it.