Depth of field?

Question

I have a photography assignment to take three depth of field photographs. The problem i have is that I am using a 35mm camera. I am having sooo much trouble. Is anyone willing to IM me or message me and help me figure out what to do? PLEASE HELP!!!

Answer 1

So you need 3 photographs showing depth of field? You don't know how to do this - please tell me this is your first day in the class.

Depth of field refers to focus mainly. More specifically where the focus is at. Close - medium or far away (infinite).

The first photo can be a shallow depth of field where the only object in focus is the front most subject. Use a wide aperature for this.

The next photo can be of medium dof where the middle object and foremost objecs is in focus.

The third photo would show a greater dof where all 3 objects are in focus. Using a small aperature is how you achieve this.

You can use the same subjects to take all three photos. Find something where 3 different subjects are 25 - 50 meters apart. Stand in one spot, set your aperature to like 4.5 and snap a photo - then change it to 11 and snap the photo - then finally to 22 (or greater) and snap the photo.

Answer 2

Shallow depth of field is where very little is in focus, created by a large-open aperture (a small number like 1.2 or 2.6).

Very large depth of field is where everything in the picture is in focus, with a very small aperature - like squinting your eyes when you can't see something (a large number like 16).

What you see when you look through the camera isn't exactly what you will see in the final picture. So you can't go by "this looks like not a lot is in focus" when you look through the camera. Because when you're looking through the aperature is as open as possible, but when you take the picture it goes to where you set it.

When you change your aperature open one stop (lets more light in) you have to change your shutter speed once faster and it will still be exposed right. The opposite is true, close down your aperature one stop (less light) and you slow down your shutter by one notch.

Answer 3

depth of field is related to how fast you are shooting, say 1/1000 of a second, and how tight the aperture is. If you shoot something at f16 and 1000th of a second, basically everything will be in focus.

Slow the lens speed down, 1/250 or so, and shoot at f5.6 or f8, focusing hard on something near to you and shoot that. Then use the same thing, but focus on something farther away, with your nearby subject still in the photo. What you will see is that in the first shot, the subject will be in focus, but the background will not be. Then in the second, you will see that the background, what you focused on, will be in focus, but your nearby subject, on which you did not focus, will be out of focus.

If you are using a SLR, that is all easy, how to do it with a point and shoot is something I am not familiar with because I don't use them.

Answer 4

It had better be really well lit for f16 and 1/1000 of a second!

Answer 5

Wikipedia does pretty well on the subject of depth of field. See:

http://en.wikipedia.org/wiki/Depth_of_field

See also: http://www.photo.net/learn/optics/dofdigital/

Answer 6

take a picture where something is far away, another item in the middle, and close up ! get all 3 in the picture.........

Answer 7

i sent you an email