Questions tagged [focus]

Focus is the mechanism of converging light from a point light source onto an imaging plane by a lens.

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7
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4answers
2k views

How to take sharper photos [duplicate]

I am sick and tired of getting photos that turn out just slightly blurry. I can't seem to figure out why this is or how to fix it. I like to shoot at events, indoors and outdoors, action shots and ...
15
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5answers
5k views

Why focus on the eye closest to the camera instead of the eye in the middle?

I've read more than once that the closest eye to the camera should be focused on a portrait of a person or of a group of people. Here is an example (faces are blured for discretion, pay attention to ...
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1answer
115 views

Can I salvage this out of focus image? [duplicate]

I took this photo with Canon EOS 1200D, using the 55–250mm kit lens. Unfortunately the pic is out of focus. Is there anything I can do to salvage this or fix the focus?
0
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1answer
506 views

How to get the effect of blurred lights (bright light spots)? [duplicate]

The attached photo is clicked in a professional DSLR camera. How can I get a similar effect of blurred lights in an ordinary digital camera, Or How can I edit a image later to get this similar effect?
0
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1answer
423 views

Achieve blur in the foreground and the background with a Nikon Coolpix 530 [duplicate]

I have been trying to take photographs of items in the mid-ground and am not getting sufficient blur on my foregrounds and backgrounds. I have tried using different distances between my subjects, ...
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2answers
7k views

How to get rid of blur background in photography ? How to get the background in focus as well in photography? [duplicate]

I have a Nikon D-5300 with 18-140mm zoom lens, Recently I visited a place, where I wanted to capture the mountain and lakes with the subject. As a beginner I used to click in Auto mode. I was able to ...
2
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2answers
6k views

Why does my DSLR focus on the background instead of my subject when taking shallow DoF photos?

I am an amateur photographer and have a Nikon D7000 and I want to get the blurry background effect (shallow DOF). I have a 35mm lens and I have set the aperture to be 1.8. While taking a picture I ...
0
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2answers
166 views

How can I fix the blur in this photo?

Someone else took this picture & the background was focused instead of us. please help.It was my farewell picture and It really would be great if someone can help me.
4
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4answers
5k views

Focus to infinity with 10-18mm canon lens

I am using a canon 10-18mm wide angle lens on a Canon t3 camera. I want to try shooting some stars at night. So I want to focus the lens to infinity. But the lens has no hard stop to it, or any sort ...
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1answer
171 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 ...
1
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1answer
284 views

Best technique for taking sharp photos with only a few auto focus points? [duplicate]

I have some Canon APS-C cameras which only have 9 or 11 AF points and I find the focus points are mostly in the center of the view finder. I work around it by finding the closest point, half-pressing ...
0
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2answers
347 views

Lock focus and lightning with Nikon D3100

I am trying to shoot a video with perfectly white background with a similar setup as described here: http://www.gowallaby.com/how-to-get-a-white-background-in-video/ However, Im using Nikon D3100 ...
7
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3answers
5k views

Concept of focus for a pinhole camera?

Is there a concept of "focus" and thereby defocus for a pinhole camera? If yes, then what is it? If it is assumed that only one ray of light enters in through the pinhole from every point on the scene,...
3
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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 ...
7
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2answers
5k views

How do I diagnose the source of focus problem in a camera?

Probably a novice question, but how do I correctly diagnose from a photo for what reason that camera wasn't able to focus properly? It can be any 1 of the following Unsteady hand Lens issue Metering ...
2
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3answers
1k 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 ...
2
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4answers
1k views

Does distortion change with focus?

I'm interested in writing some software to eventually replace the current photogrammetry system I use at work. Distortion correction (among other calibrations) is an important factor in getting high ...
0
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2answers
262 views

Can't get sharp focus on Canon 7D at 250mm f/32 [duplicate]

I'm an accomplished photographer (at least I thought I was) until I shot and re-shot a scene and it keeps turning out soft. Settings: Canon 7D... 250 mm...f29...manual focus...1/40 exposure I used a ...
2
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2answers
875 views

Is out-of-focus photography very niche or lost cause? [closed]

I recently decided to ditch my typical style of photography and opt to experiment with having the objects out of focus. I'm slightly indifferent with the results (as I'm learning this effect, will ...
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2answers
275 views

Is it normal for photos to be fuzzy when the lens is on M even though the camera is on auto?

I just purchased online a used Nikon D600 with the kit zoom--I think it is 24-85mm AF-S. I took the camera out yesterday and shot maybe 100 photos. When I looked at them on the computer none of them ...
5
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6answers
2k views

How to twist focus ring without shaking camera?

I'm shooting macro video with a Sony a6300 with a 50mm macro lens. I'm trying to do food shots with extremely shallow depth of field, for example two cookies, one behind the other. I'm trying to do ...
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2answers
2k views

What does it mean when macro focus range and normal focus range are equal?

For an example, G3X's normal FR and macro FR are the same according to DPReview. So, what happens when shooting? Also what does it mean a camera's (FZ2000) normal FR is 30cm? (that means it can ...
0
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3answers
701 views

How to get someone razor-sharp from head to toe from a distance of 12 feet (3-4 meter)?

I have tried several apertures, but I still can't get the entire body of the subject to be super-sharp. When the subject extends the arms, I find the hands to be less sharp than the eyes. I'm using a ...
3
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4answers
3k views

How can I take a photo through trees but focus on an object behind the trees?

I tried taking a picture of something through some trees but my camera keeps focusing on the trees instead of what is behind the trees. How can I focus on what is behind the tree?
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3answers
265 views

What should I look for in camera phone specs to ensure quick focus?

I have been searching for good camera phone. I am looking for two things: Good/Quick Focus: I have used Nokia X2 DS, camera phone in this phone rear camera takes too much time to focus on a scene and ...
4
votes
3answers
716 views

Ideal way to focus for portrait photography using a prime lens with narrow depth of field?

I recently invested in the Sigma 50mm f/1.4 Art lens for Canon. I want to know which is the best way to focus for portraits. I am using a camera with APS-C cropped sensor. Should I use focal points to ...
2
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1answer
147 views

Preserving AF speed and accuracy in extreme cold?

How can I keep my camera focusing well when it's very cold out? I recently did a portrait shoot where it was around 10 degrees Fahrenheit (-12 Celsius), using my Canon EOS 50d, and 50mm f/1.8 STM. I ...
0
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1answer
1k views

Focus ring not working in D3300 with factory supplied 18 - 55 mm lens

I have this D3300 that was working completely fine. Someone was playing with the settings and I realized that I cannot focus on objects anymore. I don't think that there is something physically ...
2
votes
2answers
390 views

How can I effectively use the focus points (of Canon DSLR), to get accurate focus on a small subject?

I'm shooting birds with my Canon 1200D and 55-250mm lens. I know this is not ideal lens and focal length for bird photography. But I am new to this field and before investing on expensive equipment, ...
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2answers
2k views

How can I make my camera focus on the eyeball rather than eyelashes?

I often find it challenging to focus on the eyeball (iris) rather than the eyelashes. The focus points on my Nikon D750 are not dots that I can aim on the iris, but small squares that tend to cover ...
9
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5answers
670 views

How do I take a sharp picture of a large crowd of faces?

I've been asked to take a picture of my church (the people, not the building we meet in). They're renting a lift I can use to get adequate height to fit all ~250 people into the frame, but I'm kind of ...
0
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1answer
3k views

My Nikon coolpix doesn't focus on close up mode

I have a Nikon Coolpix L830. I recently tried taking a close up picture (close up mode) and the image would not focus at all. Usually the close up mode is really sharp and clear. Can anyone help me?
2
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2answers
219 views

Why do out of focus elements in a photograph increase in apparent brightness?

What is the physics that explains the phenomenon observed when out of focus areas increase in apparent brightness?
4
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3answers
381 views

Are points off-center from the lens axis out of focus? [duplicate]

If I take a picture of a flat surface perpendicular to the direction of the lens (i.e. the surface is facing directly at the camera), and I focus on the center, are the points off center in perfect ...
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2answers
558 views

How do I take a photo with sunset and starry sky at the same time

Here is a reference. Hope it helps with the question
4
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1answer
11k views

Does Canon have an AF assist light on camera?

I have a 70D and a T2i, and none of them turn on an AF assist light when focusing. I also have a YN465 which has an AF assist led and it works perfectly in both cameras. I believe the camera would ...
0
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2answers
242 views

How do you focus a Fujinon 23mm 1.4 in the dark?

I went on a night hike with my friends, and we decided to take a group picture so I pulled out my Fujifilm camera with a 23mm 1.4. There was no natural light so we had to use the on-camera flash, ...
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2answers
228 views

What is the point of Auto Focus? [closed]

Although I started in the 90’s with the EOS system, I never used the AF inherent in EF lenses. As an amateur, I could take the time to take the best picture I could. I feel that I can get a better ...
2
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2answers
351 views

How does (auto-/manual-)focus changing work?

I know when I change focal length of a zoom lens the physical length of it is changed. It's understandable: the optical parameters of the lens were changed. But what is going on when (auto-/manual-)...
11
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2answers
1k views

What is the best way to focus when doing night photography or astrophotography?

Last night, when I was attempting to do some astrophotography, I found it rather difficult to focus on the stars/tress/buildings in nearly pitch darkness. The Live View feature doesn't show much as it ...
4
votes
1answer
239 views

Where should I focus in landscape photography?

Not sure how relevant my question is, but I am a bit confused as where to focus in landscape photography. I have a D90 with Matrix mode, so when I try to take a photograph (say a house in the valley),...
4
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4answers
1k views

When changing between manual and auto focus, should I change the setting on both the body and the lens?

I use my DSLR (Nikon D500) for both photography and video, and I prefer autofocus for photography and manual focus for video (to get rid of autofocus noise). There is an option for changing between ...
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2answers
2k views

Focus accuracy on new Tokina 11-20. Expected or defect?

I seem to have a focus issue with my new Tokina 11-20. It's mounted on a Canon 1000D(XS) The camera is on a tripod. The lens is wide open F/2.8, at 11 mm. I manually focused on the T on the box ...
0
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2answers
148 views

What is the most general theoretical reason images out of focus appear blurry?

Don't know if I should ask here or physics for optics. But I am wondering how come images out of focus appear blurry? It seems to me that if a given lens geometry has a given focal length, then ...
0
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2answers
247 views

I don't need anything to be blurred. I need everything to be focused [duplicate]

The scene is at the distance of say 10 feet. I own Nikon d7200 and a lens of 18-140 mm. There are three cats here and there (not together), but many of my images focused on one/two cats and not all ...
22
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3answers
3k views

How to reposition subject in the same place and pose in a series of images over time

I am going on a lengthy road trip this summer, and I wanted to have some fun with the pictures I take. I thought it would be cool to take pictures of my girlfriend in various locations, but have her ...
3
votes
1answer
680 views

Why does my Zorki 4 take blurred pics on infinity focus?

I've recently bought a Zorki 4 and the results I get from my test roll are quite disappointing. I've been calibrating the mirror, adjusting it for both infinity focus and close one (1 meter). Here is ...
7
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2answers
816 views

What are these red markings on this lens?

What do those red marking do (just to the right to the focus distances?
0
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1answer
192 views

Tethering to improve focusing

I use a Canon 700D, and my focus is always just a little bit off. What is the best tethering device I could use to preview on a bigger screen?
3
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2answers
2k views

Is there any reason you would use one-shot focus over AI-Servo?

The only one I can think of is recomposition - achieving focus and then recomposing. Are there any others? The convenience of tracking your subject seems very, very convenient - moreso than the lock ...