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Questions tagged [depth-of-field]

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

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91 views

Does shift based perpsective correction have any effect on focus?

Consider a photographer with an SLR camera and a PC lens attached in its default, unshifted position, standing on the ground at the base of a columned building whose height is X times that of the ...
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2answers
43 views

“Focal Distance” / “Depth of field” of endocsopic and (car) backup cameras

In a nutshell, my question is: Why is the depth of field for endoscopic cameras so limited? It seems it is generally around 3 to 8cm (some are around 3 to 40cm). Why aren't they similar to automobile ...
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1answer
126 views

How do I activate Depth of Field Preview on a Canon Eos 100?

I have searched the internet for some time now, and have found multiple mentions of a "depth of field preview" function on the Canon EOS 100 (the analog one from 1991. I have used a Canon EOS 100 for ...
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1answer
57 views

Why is far depth of field larger than near?

I just read this article which sounds quite sane. However, the article states (and backs it up with the diagram below) that the size of the smallest object that will be clearly resolved in your image ...
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2answers
132 views

Changing depth of field of Nikon D5200

I've been trying to change the depth of field on a Nikon D5200 for 2 hours and I can't seem to get it to work. I have to take photos and videos of people tomorrow (this is not my camera). The depth of ...
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3answers
100 views

Shallow depth of field with wide angle

I need to video (but same q for photos) an interview using a Sony A7 and the kit 28-70mm f3.5 - f5.6. I want the shallowest depth of field I can get. If I use 70mm the lowest aperture I can use is f5....
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4answers
149 views

Are all prime lenses designed so that the same DoF scale applies at any focusing distance? If so, why?

This question is about the mapping between the angular position of the focusing ring and the focusing distance. This mapping could be anything but the design of prime lenses seems to be such that a ...
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3answers
621 views

Any truth that depth of field extends from one-third in front of focal point to two-thirds behind it?

In the book Digital Photography Complete Course, there is a page that discusses and illustrates depth of field: There is an info box that says the following: The point at which you focus the lens ...
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2answers
2k views

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

This lens, a Nikkor 80-200 AIS, has some curved lines that are color coded to match the aperture ring. Originally I thought this was for focusing but playing around with it does not make it seem like ...
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5answers
544 views

How to maximize the blurred background look with a distant subject (for example, 10m away)?

What lenses do I need in order to achieve the amount of bokeh that's on the image below? I am quite new to dslr photography, and I want to buy a new lens. My main objective is to get strong bokeh ...
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5answers
3k views

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

When setting the aperture at f1.8 you are for sure going to overexpose the image. When I'm out at the beach I set my GH5 at f1.8 with the shutter speed 1/8000 and my iso at 200, but I still get an ...
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1answer
118 views

How does blur radius change with distance from the point of focus at macro distances?

In a macro situation, is there a known function that maps the blur radius as a function of the physical distance from the plane of focus? I'd expect this function to give near zero (in pixels) at ...
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2answers
329 views

Does changing the focal length change the depth of field for the same magnification?

When taking pictures with lenses with the same f-stop and different focal lengths, and magnifying the same subject to the same size (by changing the distance), how does the depth of field vary? I am ...
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0answers
51 views

Why does a point and shoot with the same aperture and focal length as a more expensive full sensor lens seems to have a deeper depth of field? [duplicate]

So I’m in the market for my first real camera and a few lenses. One thing I can’t seem to wrap my mind around is as follows: I own a G7X. It has a max aperture of f/1.8 and max focal length of 35mm (...
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1answer
1k views

700D live view depth of field not accurate

I shoot with a Canon 700D and I've just bought myself a Sigma 105mm 2.8 Macro lens. I've been loving the new lens but one issue I have is that the depth of field in the live view on the camera's ...
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3answers
146 views

How can I achieve more depth of field on macro shots with a smartphone camera?

How can I get more depth of field for macro photography with a smartphone (Huawei Honor 8) camera? I am trying to do some macro photography work using my smart phone and a custom-made macro lens. My ...
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1answer
385 views

Is this “tack sharp with blurred background” look done with Photoshop?

I’m relatively new to photography and although I feel like each photographer has their own style when capturing an image it seems that sometimes I just don’t have the right equipment. The pictures ...
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4answers
179 views

Does a macro lens have a smaller DOF in 'real-world' distances at the same focal length and aperture as other primes, why?

This question IS about: Does a macro lens have a shallower DOF at the same settings and focal length as another prime? If so, what in the optics is responsible for this? Using a Macro lens as a ...
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2answers
192 views

Focal length measurement and definition in DSLR cameras [duplicate]

So i am a bit confused when it comes to focal length in DSLR cameras. According to multiple sources online i found and as per NIKON "It is a calculation of an optical distance from the point where ...
3
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2answers
141 views

How to take a macro photo, but with the subject completely in focus [duplicate]

I love macro photography, it gives an insight in the small world around is. Unfortunately, I'm really not good at it. When I came across an artificial beehive, I took a chance to get into the bees and ...
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2answers
107 views

Distortion towards the edges/corners of the field of view in an image

I am taking a picture keeping the camera horizontally in landscape mode from a height of roughly 3-4 ft, acquiring the top-view of the scene. It was seen that the objects placed towards the centre of ...
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4answers
201 views

How many steps to walk forward to get equal range to 200mm with 70mm lens?

I'm newbie in the world of lenses ... I have 24-70mm 2.8. I never got a chance to use 70-200mm. One friend told me that you just have to walk two or three steps forward to get 200mm equal range with ...
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1answer
435 views

Will 50mm f1.4 and 85mm f1.8 lenses produce the same bokeh, given the same framing?

I have recently upgraded from a DX Body (Nikon D3300) to a FX body (Nikon D750) and also I have Sigma 70-200mm f2.8 & Sigma 150-600mm Sport lenses. While I was using the DX body, I had a Nikon ...
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1answer
57 views

Depth of field and aperture size [duplicate]

Why does a smaller aperture size have a high depth of field? What is the physics behind this?
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3answers
6k views

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

After the announcement of the new Samsung Galaxy S9 with the new camera that changes aperture, I caught myself wondering: if smartphones have such a wide aperture (f/2.8, f/2.2, etc), how are ...
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4answers
3k views

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

I've noticed that some photos of landscapes make me feel the depth and immersion, don't know how to describe it, just the true feeling that the photo isn't really flat. Other photos rather look ...
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2answers
575 views

How can I find cameras with a Depth of Field Preview button?

Which specific cameras (Brand/Model) have a DOF button that actuates the iris and is NOT just an electronic function? I used the DOF and split screen focus extensively shooting 35MM. I don't have ...
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3answers
983 views

Understanding focus distance of Nikon f/1.8D lens with D5600 Camera

I took some sample photos using my Nikon D5600 camera with Nikon f/1.8D lens. I had to set the focus manually since this lens doesn't provide AF with my camera. My Question: The album of my sample ...
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4answers
184 views

Which aperture value determines depth of field on variable aperture lenses?

Do variable aperture values represent the way in which depth of field is rendered by a lens or only to the transmission of light (i.e the brightness)? For example, if i wish to calculate depth of ...
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2answers
200 views

depth of field and f-stop

I have a thorlabs DCC1545M camera. https://www.thorlabs.com/newgrouppage9.cfm?objectgroup_id=4024&pn=DCC1545M e.g. it has a 1/2 inch format, a sensor size of 6.66mm*5.32mm, with 1280*1024 ...
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1answer
183 views

Why does my depth of field look like it’s swirling?

I’m sure this is an illusion. Maybe it’s just me, but to my eyes the out of focus areas look as if they’re swirling or distorted, like if you took the photo with a fisheye lens or something like that. ...
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4answers
1k views

What is the formula for determining where infinity focus begins?

I'm having difficulty find any info on determining where infinity focus begins. I'm assuming there's a formula involving focal length and... Can anyone help?
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2answers
482 views

How do I calculate the change in HFOV and VFOV as Object Distance changes?

Let's assume that I have the following camera parameters confirmed: Focal Length F/# Coc And a Lens Focusing Distance (the focus distance it was optimized to in the manufacturing process of the lens)....
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1answer
238 views

What is the depth of field if the the focus distance is set to infinity?

If the camera format is 35mm, the focal length of the lens is 35mm, the aperture is f/4, the subject distance is 25ft, and the hyperfocal distance is 39'7", then what would be the range of focus when ...
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6answers
3k views

Why do we need a DOF preview button?

Why not just show the effective depth of field, by default? What's the point of having it display a picture that's different to how the image will actually turn out? My first thought was, it must be ...
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2answers
103 views

What variables define DoF? [duplicate]

I want to be able to see a frame and 'calculate' (either mathematically or intuitively) the DoF of the picture to be taken. The most basic variable would be the aperture; my question is do other ...
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0answers
53 views

How to take a photo with foreground and sky both very sharp? [duplicate]

I'm a newbie and a girl post the above picture on SNS. I want to impress her by saying I know exactly how to set the camera to shoot the above photo. But sadly I don't know squat. So how to take a ...
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6answers
475 views

Lens equivalent depth of field [duplicate]

This question is ported directly from Physics SE, because the guys there believe this is the right place for it. In digital photography, there's the principle of lens equivalency, according to which, ...
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1answer
2k views

Depth of field preview button on Canon 5D Mark II

In manual and Av mode I experimented with apertures of f/4 - f/22 and the depth of field preview button. Nothing happened as I pressed the button, does anyone know why this could be? Also, online ...
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5answers
322 views

F-stop vs T-Stop - how do I quickly grasp a videographers view of the world?

I'm aware this is flirting with video rather than photography, but the question really relates to how each world can be understood by the other. Very briefly - I am an amateur photographer who ...
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3answers
181 views

If I add a 2x telephoto adapter to a 18 - 55 mm 1:3.5 - 5.6 lens will portrait backgrounds go out of focus better?

I understand that I need a telephoto lens, combined with a low fstop to separate the subject in a portrait from the background, which will be out of focus. I'm confused if I add a macro/2x telephoto ...
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2answers
835 views

How do I calculate the depth of field of cameras on mobile phones with auto focus?

I just hope to learn the relationship between depth of field (DOF) with the distance on my mobile phone. When I capture one cup with the distance about 20cm from my phone, what 's the DOF? When I ...
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1answer
927 views

How to get a blurred background using a Canon 18-55 STM lens? [duplicate]

I'm totally new to photography and need your help. I've read much about ISO, Aperture and Shutter speed. I know to get a blurred backround: use a wide aperture. Also I know the distance between ...
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3answers
156 views

What type of lens should I buy if I want strong out-of-focus blur?

I'm looking for a lens to focus on one thing, and the background is really blurred out. I also want really good quality. I was looking a 50mm prime.
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4answers
283 views

Do I need shallow DoF and a large sensor for travel photography? [closed]

I am really conflicted in my camera needs. Currently I am sporting a tiny RX100 and even that is rarely used as smartphones have become our main cameras. We're going travelling for 3 months, the ...
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1answer
149 views

How to achieve large DOF in a macro like this video? [duplicate]

I noticed that this video has a very beautiful DOF, almost spot on. It is a video but should still be applicable to photography. So how is such precise and large Depth of field achieved? What kind of ...
4
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1answer
245 views

Will a Canon MP-E 65 provide more depth of field than a reversed lens?

I currently do macro photography using a Canon EF-S 18-55 kit lens, setting it to f16, and unscrewing it while hitting depth of field preview to close the aperture and reversing it. (See for example ...
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0answers
484 views

D.O.F equivalence in micro four thirds vs full frame [duplicate]

I know that a 25mm lens in a micro four thirds camera is equivalent to a 50mm (crop factor 2x) in a 35mm sensor camera. What change will there be in depth of field ?
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4answers
2k views

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

I made a picture (see below) of an almond cake with the following settings: 4/3 sensor 25mm focal length Aperture f1.4 Shutter speed 1/30 sec I chose an appropriate shutter speed with the biggest ...
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3answers
792 views

How can I get infinity focus, both including the moon and a tree in the foreground?

I'm trying to take photos of the moon with other objects in the foreground but I can't seem to get both in focus. How far do I have to be from the tree to have pan focus (foreground and background in ...