40 votes

How can a smartphone take pictures of a landscape with everything in focus?

It's worth noting that sensor size plays a huge role in depth of field and behavior of the lens. A smartphone has a tiny camera sensor, often around 25 square mm. This gives the camera a crop factor ...
AthomSfere's user avatar
34 votes
Accepted

How to convey a sense of depth & distance in a landscape?

If we start by just numbering them 1 - 6 for easy reference... Personally, I'd discount 5 altogether as it has none of the aspects we're looking for. 2 is a bit naïve & perhaps achieves a lot of ...
Tetsujin's user avatar
  • 23.2k
33 votes
Accepted

Why are War Photographers able to take pictures that seemingly violate the exposure rule?

First about depth-of-field: The two examples you posted, and many war pictures, are of objects at or near infinity (Latin: as far as the eye can see). The light waves from objects at infinity arrive ...
Alan Marcus's user avatar
  • 38.9k
32 votes

Why are War Photographers able to take pictures that seemingly violate the exposure rule?

For the first photo: You just happened to pick a staged photo... This is the image with text, note the artificial bright lighting coming from high above, near the cameras position?: This is the ...
blobbymcblobby's user avatar
28 votes

How is it possible to have shallow depth of field in very bright conditions?

The easiest way to solve this problem is to use a neutral-density filter. They are essentially neutral grey filters that cut down on the light reaching the film or digital sensor. Good ones are ...
Jim MacKenzie's user avatar
27 votes
Accepted

70cm perfect focus depth of field for product photography

For me this is perfect fit for tilt lens. Moving the focus plane to be parallel to the guitar you will be able to get focus of entire guitar (in displayed position). Even if you use relatively open ...
Romeo Ninov's user avatar
  • 11.9k
26 votes

How to have a sharp product image?

shutter speed 0.5 seconds This is likely to be a bit of your problem. The shutter causes vibration of the camera. So, too, does your hand pushing the release button. At faster speeds, this ...
OnBreak.'s user avatar
  • 20.5k
25 votes

Why do people not use large f-numbers (small apertures) when shooting landscapes, when you want large depth of field?

First people want to have (when making photos of landscape) almost all in focus. But they do not use F22-32 because on such aperture diffraction degradate the quality of images. Second, when shooting ...
Romeo Ninov's user avatar
  • 11.9k
23 votes
Accepted

700D live view depth of field not accurate

The camera usually keeps the aperture open as wide as possible while framing the shot. It is only closed to the setting you dialed in when the picture is being taken. This allows for a brighter ...
null's user avatar
  • 8,514
22 votes
Accepted

What is the shape of the focal plane?

The effect is called field curvature. A good discussion comes from Nikon. It is a lens aberration that can reduce the resolution of the lens when coupled with a flat sensor. In the old days, the ...
Ross Millikan's user avatar
22 votes

Is camera lens focus an exact point or a range?

There's only one distance that is in sharpest focus. Everything in front of or behind that distance is blurry. The further we move away from the focus distance, the blurrier things get. The questions ...
Michael C's user avatar
  • 175k
21 votes

How can a smartphone take pictures of a landscape with everything in focus?

If by "landscape" you mean something like this: then the answer is simple: at very large distances, depth of field is extremely large even at large apertures. That is, at any aperture if you focus at ...
aaaaa says reinstate Monica's user avatar
18 votes

Why do we need a DOF preview button?

Hitting the DOF preview with a stopped down aperture should make it obvious: what you see can be very dim, dim enough it can be very difficult to compose and focus. That's why cameras have the lens ...
whatsisname's user avatar
  • 1,192
18 votes
Accepted

How do I get a sufficiently deep field when photographing an automobile dashboard?

You don't necessarily need to make the field deeper, you just need to tilt the field with respect to the camera's film/sensor. That's what the "tilt" function of a tilt-shift (Canon ...
Michael C's user avatar
  • 175k
15 votes
Accepted

Is this "tack sharp with blurred background" look done with Photoshop?

No photoshop necessary for that background. That's simply what happens when shooting a telephoto lens, f/2.8 or larger, and having the subject closer to the camera and much further from the background....
OnBreak.'s user avatar
  • 20.5k
15 votes
Accepted

What do these curved, color-coded lines mean on a vintage Nikkor lens?

The aperture ring is engraved with f-numbers duplicated; the duplicates are color coded the same. The lines you are asking about are also paired, same color. The idea is to graphically display the ...
Alan Marcus's user avatar
  • 38.9k
14 votes
Accepted

Can focus stacking (or a similar technique) also be used to reduce depth of field?

Yes, it's possible With the focus stack you could estimate a depth map of the scene. Then this map is used to selectively blur the image to emulate the effect of shallower depth of field. See for ...
Atnas's user avatar
  • 278
13 votes

Why do we need a DOF preview button?

Why do we need a DOF preview button? So that you can see how much depth of field you'll get when the shot is actually taken. Why not just show the effective depth of field, by default? Because ...
Caleb's user avatar
  • 31.7k
13 votes

How can a smartphone take pictures of a landscape with everything in focus?

Aperture is only one factor in depth of field. Others are: sensor size and focal length. Large format camera lenses often have max apertures in f/4-f/5 range, yet they yield very shallow DOF - because ...
Agent_L's user avatar
  • 2,090
13 votes
Accepted

Manual focus and depth of field

I haven't used this camera, but it has a "Manual focus magnification' feature. On my Sony Alpha a550 DSLR, it automatically sets aperture to full open to help you with precise focusing. The ...
Reinmar Bielau's user avatar
13 votes

How do I get a sufficiently deep field when photographing an automobile dashboard?

Exposure time is moot if the subject is stationery and using a tripod. f/11 @ 1/8" or f/16 @ 1/4" or best f/22 @ 1/2" will accomplish your goal. Depth of field -- from the point focused ...
Alan Marcus's user avatar
  • 38.9k
11 votes

Why is the Depth of Field Preview button necessary?

Why is the Depth of Field Preview button necessary? With the lens wide open, as it normally is before you take the shot, you can't tell how much depth of field you'll get in the photograph. When you ...
Caleb's user avatar
  • 31.7k
11 votes
Accepted

Maximizing bokeh in the foreground?

From the other question: Here's the list of things that influence depth of field the most (in this particular order): Subject distance, the closer the subject is, the shallower the DOF (think of ...
10 Replies's user avatar
11 votes

How is it possible to have shallow depth of field in very bright conditions?

Some considerations: Turn your ISO right down to the minimum value Do you really need f/1.8? Depending on the composition of your shot you can usually still get decent shallow DoF up to around f/4....
SierraOscar's user avatar
11 votes

70cm perfect focus depth of field for product photography

And the other option besides the one Romeo Ninov mentions (tilt lens) is focus stacking. Basically is adjusting focus bit by bit taking several shots. This is better done manually doing the focus. If ...
Rafael's user avatar
  • 24.5k
10 votes

What causes images to have flat depth?

It is typically called "lens compression," where things farther away appear nearer to the subject/closer together. And the opposite of this is typically called "lens distortion," ...
Steven Kersting's user avatar
9 votes

What is the shape of the focal plane?

A single converging lens with real thickness has a curved field of focus. Most lenses offered by manufacturers include corrective elements to flatten the field of focus closer to a flat focal plane to ...
Michael C's user avatar
  • 175k
9 votes

How to focus on an area correctly, while still blurring everything else?

The short version is you need not the "biggest aperture possible" but the right aperture given the distance and desired depth of field. There are a number of online depth of field calculators ...
Linwood's user avatar
  • 2,363
9 votes

Why are War Photographers able to take pictures that seemingly violate the exposure rule?

A lot of it was the choice of camera. The usual "press camera" of the 30's, 40's and 50's was a Speed Graphic or similar with a 4" by 5" focal plane. The enlargement required to ...
John Doty's user avatar
  • 191
8 votes
Accepted

Why I am getting different values for depth of field from calculators vs in-camera DoF preview?

First, a word about what depth-of-field is and is not: In a way, depth-of-field is an illusion. There is only one plane of focus. Everything in front of or behind the point of focus is out of ...
Michael C's user avatar
  • 175k

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