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Tagged Questions

Depth of Field is the depth of a scene that is "in focus" as perceived by the eye.

learn more… | top users | synonyms

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0answers
45 views

Not able to achieve shallow dof with aperture of f/4 in nikond5200 [duplicate]

I set my aperture to 4 and yet I cannot blur out the object that is 10 ft away. Everything is in focus. I only wanted the near object which is 3 ft away to be in focus.
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3answers
547 views

Why are big apertures used for landscape photography?

If it is true that a large aperture means shallow depth of field..a.k.a near objects in focus and background or far objects in blur, then how come big aperture is recommended for landscape ...
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2answers
168 views

Big sensor and landscape photography, DoF

I've been an owner of point & shot cameras for some years. Now, I'm considering to move to bigger sensor cameras (4/3, asp-c) because I really hate the noise that small sensors produce on low ...
2
votes
2answers
100 views

Invariants in subject size and depth of field? [duplicate]

I was curious if I could cheat my way around having to focus stack an object by using different lenses. Playing with the Depth of Field calculator I noticed something interesting: No matter what ...
1
vote
1answer
114 views

How to calculate depth of field by using extension tubes

I am using Nikkor 105mm f/2.8G and its close focus is: 1 foot (0.314m, 31.4 cm). And depth of field for this distance is about 0.5cm (I have an application on my Android phone). How will change depth ...
4
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2answers
165 views

Use of DOF adapters in stills photography

The camcorder guys figured out long ago how you can get the shallow DOF of a larger sensor system (typically full frame) on a camcorder equipped with a much smaller sensor (typically 1/2.8") by doing ...
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0answers
37 views

Does a smaller sensor give shallow depth of field? [duplicate]

I have read that a full frame sensor gives a more shallow depth of field if using the same lens as on a crop frame sensor. Is this true? What I actually want to know is how does this relate to a point ...
1
vote
2answers
125 views

What determines the sharp parts in an image: the DoF or the focus point?

I am a little bit confused between depth of field (DoF) and focus points. Which of them is responsible for making part of the image sharp?
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1answer
123 views

Night photo with Leica 25mm: blur at f/1.4 [duplicate]

I have an Olympus OMD EM5 and a Leica 25mm which takes wonderful pictures in daylight. I was trying to take night pictures with this setup and I had the following results (after several tries and ...
0
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2answers
116 views

Can I take photo with visible depth of field if shooting in a mirror?

There are question about "floating" objects. But how possible make photo with that depth of field in mirror? It is ordinary shot that reflected after, so?
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0answers
41 views

Connection between aperture and depth of field? [duplicate]

I want to know what's the relationship between aperture and depth of field. Why depth changes as aperture is changed?
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votes
3answers
484 views

Why do depth of field calculators show *more* DOF for larger formats with the same lens parameters?

I thought I had a pretty good seat of the pants understand of DOF. But I've been playing with DOF calculators and it's giving me results that don't line up with my practical experience, so I'm ...
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0answers
48 views

How to take photo in which only subject is focused [duplicate]

I just bought a Nikon Coolpix L820 and its my first personal camera ever. I am looking for a good video tutorial if possible and I am also looking how can I take a photo in which only the subject is ...
1
vote
3answers
192 views

Wide angle with low F stop number (eg.F2.8) in relate to depth of field

What is the purpose of having a wide angle lens like the Nikon AF-S 14-24mm f/2.8G ED with a low f/stop? For example I am shooting a landscape mountain scenery shots or group photos, why would I use ...
2
votes
2answers
1k views

Focusing on hyperfocal distance with Nikkor 35mm f/1.8G prime lens [duplicate]

I have a Nikkor 35mm f/1.8G lens on a Nikon D7000 body. I have a theoretical understanding of hyperfocal distance. And it seems like the lenses with an clear indication of "infinite" focus point are ...
4
votes
6answers
401 views

Why don't cameras provide you with DOF information?

The viewfinder is usually not 100% accurate in representing the final image you will get and I've lost a few shots while using a too narrow DOF. I would imagine that cameras, knowing the focal length, ...
0
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1answer
262 views

Depth of field: 28mm & crop vs 50mm & full frame [duplicate]

I've seen the posts about the angle of view being the same for a 28mm lens on a 1.6 crop sensor as for a 50mm lens on a full frame. I understand it. But what about the depth of field. Will that ...
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3answers
586 views

How does sensor size impact depth of field and diffraction for macro photography?

Macro photographers often stop down to very small apertures to maximize the razor thin depth of field when operating at such close focus distances. Smaller sensors have greater depth of field than ...
2
votes
1answer
161 views

How to get tack sharp portraits with shallow DOF when lacking an AF point where I want to focus?

What is the best way to get tack sharp portraits with shallow depth of field when lacking an auto focus point where I want to focus. I don't want to crop and "focus and recompose" is not an option ...
0
votes
1answer
225 views

How to know the F-Stop in a Webcam? [closed]

I'm looking for a Webcam with large aperture and shallow depth of field, similar to the F 1.8 Canon lenses, so far It has been really difficult since most of the specifications for any webcam are ...
1
vote
2answers
242 views

Why can't my newer cameras focus on my hands and something behind them at the same time? [duplicate]

I've got this thing where I go around the world and hold their famous monuments with my hand through perspective photography. For example, holding the learning tower of Pisa. The pictures I've taken a ...
2
votes
2answers
76 views

How can I use control over the aperture to take better photos?

I upgraded from a point-and-shoot to a Sony NEX a few months back. I think I've made substantial progress with regards to many aspects of photography like composition, the rule of thirds, ISO, ...
3
votes
2answers
465 views

Why didn't I get bokeh with my 50mm f1.8?

Recently I took a photograph at an aperture of f/1.8, but there was very little bokeh. The shot was of a wave with a few boats in the background. Everything seems to be clear even at f/1.8. Can ...
1
vote
1answer
128 views

What is the importance of Depth of Field preview? [duplicate]

Recently while browsing for a camera, I noticed that some cameras have this "DoF Preview" and some have none. Now, can someone explain to me here the importance of this feature in a DSLR?
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1answer
127 views

Preview the DOF result in a D5100 viewfinder?

I have been told that some cameras have the ability to show the exact Depth of Field in the viewfinder when pressing a button. I searched for that button on my Nikon D5100 without success. I could ...
4
votes
1answer
163 views

How do automatic cameras know the right depth of field?

When shooting in Shutter and Aperture priority, the camera just needs to meter the scene and come up with the corresponding f-stop or shutter speed, a very algothrimitic and simple process. However, ...
1
vote
2answers
109 views

How does aperture/DOF affect continuous autofocus?

When the autofocus system is deciding to adjust the focus, say in a situation of the subject getting closer to or farther from the lens, does it take into consideration the current depth of field, ...
0
votes
8answers
922 views

Is an aperture range of 3.5-5.6 shallow enough to provide great bokeh on a cropped sensor?

I have been primarily shooting with a Canon 18-135 f/3.5-5.6 for several years now, and I am not completely satisfied with it. The problems I have are: A bit too wide on the low end A bit too short ...
-2
votes
1answer
111 views

How to make blurry background in photos? [duplicate]

I see many photos like this: How it is done?
0
votes
1answer
332 views

How to take picture with blur background using FujiFilm HS10 [duplicate]

I tried a lot to take portrait pictures with blur background using my FujiFilm HS10 but haven't succeeded yet. I use f2.8 but still cannot get the effect. Can any of the experts give me any ...
1
vote
3answers
220 views

Can we always talk about noise difference between crop and full frame?

Let's say we have two systems: 1) full-frame camera, 80 mm lens at f/2.2 2) APS-C camera, 50 mm lens at f/1.4 The subject is the same, as well as the camera position, focus distance, shutter speed ...
1
vote
1answer
146 views

How does amount of blur compare between differently-sized sensors using lenses with equivalent focal length?

Let's say we compare two bundles: 1) cropped DSLR with crop factor 1.6 and 50 mm fix lens set on f/1.4 aperture 2) full-frame DSLR and 50 * 1.6 = 80 mm (which is not far from 85 mm) fix lens on ...
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votes
2answers
85 views

What does depth of field mean? [duplicate]

What does the term depth of field mean? How is it determined and how can it be changed? Is it related to the aperture?
2
votes
2answers
2k views

What is the difference between depth of field and focal plane?

I would like to know how to address the difference between them and how relates to each other.
1
vote
0answers
89 views

Why is DOF shallower on Full Frame compared to APS-C [duplicate]

I've read the comparison between APS-C and Full Format at When do the differences between APS-C and full frame sensors matter, and why? The depth of field is controlled by the circle of confusion, ...
3
votes
1answer
173 views

When Peterson says 'fixed-lens digital cameras have greater DoF', is he assuming a smaller sensor? [duplicate]

I'm reading Understanding Exposure and ran across some discussion of apertures in fixed-lens digital cameras as compared to SLRs (page 54 in the 3rd edition). The author says that fixed-length digital ...
1
vote
2answers
158 views

How do I get the entire landscape in focus? [duplicate]

According to this calculator at 16mm, my hyperfocal distance is at 0.7m at f/11. So on the safe side, if I wanted to make sure the scenic background is tack sharp I would focus at 1m or so. But now ...
0
votes
1answer
317 views

What is the infinity lens by Jim Frazier? [duplicate]

I know who Jim Frazier is and what he has done, but I only have basic knowledge of his invention. Could someone please explain what he has done further?
4
votes
1answer
182 views

For digital sensors and in terms of imaging medium, is the minimum CoC equal to the size of 1 sensor pixel or 2? And why?

For digital sensors and in terms of imaging medium, is the minimum CoC equal to the size of 1 sensor pixel or 2? And why? For example purposes using a 35mm Full Frame digital sensor where the pixel ...
2
votes
1answer
305 views

Why do some people say to use 0.007 mm (approximate pixel size) for the CoC on a Canon 5DM2?

The 5DM2 pixel size is approximate 0.00645mm in size and so some people talk about using 0.007mm as the CoC. I think canon said once they use 0.035mm for DOF charts, full frame normal is 0.033mm, ...
3
votes
5answers
314 views

How do I get more in focus when aperture is already quite small?

When doing a product shot like this, how do I get more in focus when the aperture is already so small. I don't want to get any smaller for the risk of introducing significant diffraction. Note the ...
10
votes
3answers
431 views

ND filter vs stopping down for long exposures?

To achieve long exposures in daylight, one might need to stop down, or use an ND filter. By stopping down, the depth of field increases, but at some point the image quality/sharpness will suffer, due ...
0
votes
2answers
10k views

How to focus on object and blur the background? [duplicate]

How can I take the photo with the focus on the main object and blurred background using the Nikon D5100? What kind of mode and settings I should use? Thanks.
3
votes
4answers
403 views

How is it possible to have shallow depth of field with a small aperture? (The tele-macro paradox.)

Some longer tele lenses have a macro mode that allows for really shallow depth of field that have a lot of background melting when using relatively narrow apertures; like f/4.5-6. I have tried and ...
-4
votes
2answers
77 views

Depth of field clarification [duplicate]

What is the range of depth of field when using the hyperfocal distance? I am looking to get clarification on this topic.
4
votes
5answers
754 views

How do I find the right motion blur/depth of field trade off in sports photography?

I could be wrong but when doing sports photography I'm always thinking about the following trade off: A fast shutter speed to freeze the action. A small(er) aperture to increase DOF and thus ...
4
votes
1answer
306 views

How does Depth of Field change when changing distance to account for cropped sensor?

I know that if I take my full frame lens (for example 50mm/1.4) and put it on an APS-C sensor, the field of view (FOV) changes. So what I will do is move back to retain the same subject magnification. ...
0
votes
1answer
338 views

How to shoot with the Brenizer method with an active, moving background, i.e. on the streets

If the background is moving, like a street full of people and you're shooting a stationary subject with the Brenizer method, how does that work? When you stitch up the surrounding area wouldn't it be ...
17
votes
3answers
715 views

Why is my far away background in focus even with a low aperture number?

I took a picture of my son in an elementary school cafeteria. The room was very well lit and the parameters of the shot were Canon T3, 18mm, F/3.5, 1/125, ISO 100. I was close to him and his head ...
1
vote
3answers
210 views

Reproduction ratio / depth of field

I know that aperture changes the depth of field (DOF), but why is it that by making the image appear larger (by getting closer to the camera or zooming in) there is less DOF?