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Questions tagged [autofocus]

Autofocus is the ability of a camera/lens system to automatically adjust the focus of the lens via a motor attached to the focus group of the lens. Contrast with manual focus.

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Canon EOS90D Auto-focus indicator light

I have a Canon EOS90D and would like the auto-focus indicator light to come on in all light conditions. Can anyone help with the required settings?
JohnP's user avatar
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4 votes
5 answers
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How do I get an interchangeable lens camera on a tripod to focus on my face while I'm taking selfies?

I want to place the camera on a tripod, frame the shot, set the timer, stand where I want to be photographed, have the camera detect my face (sharp focus) and take the picture. My DSLR can't do this. ...
CameraQuestions's user avatar
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Will the in-body AF of my d7500 work on an AF-P lens with broken AF? [duplicate]

I just bought a AF-P DX NIKKOR 10-20mm f/4.5-5.6G VR lens and it has no AF. I bought it for 100€ and it’s literally like new, that’s the only reason I bought it. AF is not a priority for me as I will ...
Mike's user avatar
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Canon EOS 7DII - focus settings for birds in flight

I recently acquired a vintage Canon EOS 7D Mark II with a low shutter count. Initially, I had very good results for birds in flight, but later I started experimenting with the very sophisticated ...
Reverse Polarity's user avatar
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Nikon D750 display in the viewfinder is not working

I dropped my Nikon d750 off a low shelf. There is not visible damage. However, the viewfinder stopped displaying info. Any thoughts or suggestions? Has anyone ever encountered this? Thanks.
Ron Clarke's user avatar
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Why don't my Fujifilm X-A20 autofocus after putting back on original lens?

I have a Fujifilm X-A20, but I removed its original lens around 4 years ago and have been using a meike lens I bought at the same time. Today I decided to put back the original lens to use it but I ...
hellohelpmetq's user avatar
1 vote
1 answer
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Is there a difference in "feel" of a dedicated Manual focus lens (MF Only) vs an AF lens set to Manual Focus mode?

I really love shooting in Manual mode, but my AF Micro-NIKKOR 60mm f/2.8D Lens, when in Manual mode, doesn't have a 'buttery' feel and it can be difficult to get it to focus precisely. I have a dirt ...
Andrew Lovato's user avatar
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Do I need to upgrade my camera for group portrait photography?

I have a D3500 with kit lenses which I use to shoot group portraits. I have read extensively about lighting, aperture, ISO, shutter speed, etc., and have applied my learning to my photos. I shoot all ...
setholopolus's user avatar
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2 answers
90 views

Canon 7D - shutter Will Not Fire and Menus Disabled When Auto-Focus Is On

When I set the shooting mode to anything but automatic(eg., M, TV, SV, c1, c2, c3), and the lens is on the camera and is set to auto focus, I cannot fire the shutter or view any of the screens. ...
Lou Lowe's user avatar
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Does autofocus in iPhone changes focal length? [duplicate]

I was wondering how auto-focus works in mobile cameras. I understood that, mobile phones uses either 'contrast based' or 'phase-detection based' algorithms to find the optimum length position for ...
Aravind D. Chakravarti's user avatar
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How to deal with sudden change of action and light?

In the forest yesterday, I was busy capturing birds in flight (BIF) when suddenly I saw two animals escaping underneath the trees. There was no time to change the settings and I just hit the shutter ...
RKh's user avatar
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Not understanding the benefits of AF-ON button or option in the menu [duplicate]

I am simply not understanding the benefit of this feature. From a YouTube tutorial I learned about AF-ON button on few cameras. In my camera (Nikon D5600), it is located under: Autofocus Settings -&...
RKh's user avatar
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Are AF improvements firmware specific or model specific? [duplicate]

I was checking reviews of Nikon Z6 II Autofocus capabilities. Few reviewers complained about AF not that great whereas few reviewers say that it is better after firmware update. Are auto-focus ...
RKh's user avatar
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Subject-Tracking only available in LiveView

I found this after three years of purchasing this camera (Nikon D5600) that it does have subject-tracking capabilities like other higher-end cameras. I always used eye-piece to take photos from ...
RKh's user avatar
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3 answers
1k views

Camera auto-focus issues with Tamron 150-600mm

I rented a Tamron 150-600mm f/5-6.3 G1 to test it before buying. I want it for bird and wildlife photography. My camera is Nikon D5600. While testing today on few birds sitting on a distant branch, I ...
RKh's user avatar
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1 answer
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Lens auto-focus not working well

I am using Nikon D5600 with Kit Lens. I have mostly used Manual Single-Point focus and sometimes Continuous Full-Area focus. When using 70-300mm kit lens, I tried Auto-Focus on a bird at a single ...
RKh's user avatar
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3 votes
1 answer
108 views

Light streaks leaking beyond frame of negative?

I am using a minolta automatic camera - and for a few rolls of film now it has been producing streaks on the roll, usually in low light when there is one obvious light source. The camera is automatic ...
phaedra's user avatar
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1 vote
4 answers
203 views

What is the definition of focal length for a camera lens?

I came across many articles where the focal length of a camera lens is defined as the distance between the optical centre of the lens and the sensor. One such article is here: https://photographylife....
LumosMaxima's user avatar
1 vote
2 answers
309 views

My Nikon D7100 autofocus fluctuates and will not focus on distant objects

I photograph with a Nikon D7100 with a Tamron 18-400 mm lens. My camera is set to autofocus but when I try to photograph a bird sitting on a branch that is BEHIND near branches, the camera vacillates (...
Hol's user avatar
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How to auto Tune for live view in Nikon D780

I found my lens and camera weren't give to me good results and I resolved to tune it. I was able to tune for Finder but not for Live view. I didn't find any information on how to auto-tune or tune for ...
Coelho's user avatar
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2 answers
1k views

Nikon Z50 Auto Setting Focus Issues

I have been taking photos for many years, amateur but always complimented for my great photos. After most of my life using a great point-and-shoot camera - a Samsung VLUU WB500 (HZ10W) I bought in ...
cckadlec's user avatar
1 vote
0 answers
251 views

Why won’t the aperture adjust on my Sony A camera? [closed]

I recently bought a telezoom objective without built-in AF. I did not bother because my camera has an AF which could handle the focus on such lenses. I always had used lenses with built-in AF so I did ...
Gabor B's user avatar
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AF not working on Manual mode AV or TV mode, and shutter not opening. however both AF and shutter opening on auto and not flash -EOS400d

I am testing an old EOS 400d to see if its worth using- on auto mode and no flash mode- the camera focuses, I get the green light then it takes the photo once I fully press the trigger button, in all ...
barnaby king's user avatar
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3 answers
397 views

Autofocus in light painting

I'm working on light painting, and I am stuck. At the point of taking the shot it says to use auto focus and switch to manual. From what I have seen in tutorials. It's one pass of light on the subject ...
Justjess81's user avatar
1 vote
0 answers
187 views

Why did my back button focus stop working?

I was shooting at a styled shoot last week. Everything was going well. Then all of a sudden while I was shooting my back button focus stopped working. It didn’t seem like it was even trying to find ...
Braydenr's user avatar
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2 answers
2k views

Why doesn't my autofocus work in the optical viewfinder, but works in live view?

I have a Nikon D7200. The autofocus does not work when using the optical viewfinder. When I use live view, the autofocus works fine. But when I use the optical viewfinder, the autofocus won't stop in ...
user107366's user avatar
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2 answers
752 views

Why does my Canon dSLR only work in autofocus with liveview and not the viewfinder?

When I have my camera (a Canon 6D Mark II) in AF mode, I can't take pictures (nothing happens when I click the shutter button) while using the viewfinder. I can take pictures using the screen though ...
Shilpi's user avatar
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0 answers
183 views

Wandering focus between shots 5D Mark iv

I've been using my Canon 5D Mark iv in a professional capacity for almost five years, and a few months ago I started to feel like it wasn't sharp. Of course at first I thought this would be a lens ...
Teagan Cunniffe's user avatar
1 vote
1 answer
1k views

Help! Sigma Lens won’t manually focus

I have a Canon EOS 60D and a Sigma DG 150-500mm zoom lens that I absolutely love using for bird pictures, I’ve had it for a few years now and have never had an issue with the manual focus. It’s just ...
Erica's user avatar
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-1 votes
1 answer
189 views

Nikon D750 Autofocus Vastly Inferior to Canon DSLR Autofocus: Rented D5 and 850 - Autofocus Beautiful

I own a Nikon D 750 and prior to that a D7000. The autofocus is vastly inferior to any Canon full frame camera. I rented a Nikon D5 and the autofocus was wonderful. I heard they put the D5 autofocus ...
William H Jones Jr's user avatar
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2 answers
243 views

Can I fix a D5200 with 200mm lens that doesn't autofocus correctly after being dropped?

When first bought, my Nikon D5200 worked like a champ! Now everything has a fuzziness to it and the auto focus doesn't quite focus and you can't see the details of a picture taken. It's ruining my ...
tedster49R's user avatar
3 votes
2 answers
600 views

Focussing issue with Canon 90D and Tamron 24-70

A few weeks ago, I took wedding photos for a friend of a friend. A problem I had been having lately suddenly became very apparent: a lot of photos I take are not in focus. The focus indicators of my ...
Wouter C's user avatar
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1 vote
0 answers
2k views

Nikon D850 autofocus issues in latest batch

I was wondering whether anyone has experienced autofocus issues with the Nikon D850 from recent batches (released since September, 2021). I am aware of issues with previous batches of this camera ...
mobius's user avatar
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0 votes
1 answer
438 views

Canon 600D - how to correct sensor tilt and level

I have a Canon EOS 600D which I have modified for astrophotography by replacing the stock UV/IR filter with a Baader BCF filter (this extends the spectral response to >656nm so that Hydrogen-alpha ...
Adrian K-B.'s user avatar
2 votes
2 answers
582 views

What’s wrong with my Canon EF 85mm 1.2 lens?

It squeaks when I try to focus and sounds like metal against metal. And it won’t focus on Manual mode. The outside is in great condition but the ring for focus is loose and wobble's. It’s like it is ...
Kylista Hawkins's user avatar
6 votes
5 answers
534 views

Why is my camera missing the action again and again?

I shot a series of images in continuous high with my D4 + AF-S 300mm F/2.8 of this rat. I set my camera to AF-C single point and also tried the D9 setting. Throughout the series of images I kept ...
Arji's user avatar
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0 votes
1 answer
431 views

Slow autofocus from Tamron 150-600 on Canon M6 Mk II

I rented a Tamron 150-600 for birding to use on my Canon M6 Mk II. It works well but the first shot when I pick it up takes forever to focus. I carry it over my shoulder turned on which means it is ...
Ross Millikan's user avatar
0 votes
1 answer
369 views

Is a Nikon AF-S Nikkor 50mm f/1.8G lens compatible with a Nikon D3100?

Can I use autofocus in Nikon D3100 body with Nikon AF-S Nikkor 50mm f/1.8G lens? If possible then how? I have recently bought one but can't use autofocus. The camera is showing me lens is not attached....
Sazin's user avatar
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3 votes
1 answer
957 views

Why are entire rolls weirdly out of focus on my Olympus Sylus Epic?

So I picked up an Olympus Infinity Stylus Epic point and shoot for cheap. The problem is that none of the photos come out in focus. The guy I bought it from said the same, but I figured I'd give it a ...
RatGrimes's user avatar
1 vote
1 answer
1k views

Nikon D7100 not Auto-Focusing

I've had a Nikon D7100 for about 6 years and have always used the Nikon 18-55mm AF-S lens that came with it. I've never had any problems with the camera. I've also never taken off this lens for the 6 ...
user_583's user avatar
0 votes
1 answer
122 views

How to use Sony A77M2 auto-focus for shooting birds

I've been challenged with the following scenario: I'm shooting a stationary bird with a Sony A77M2 and 300mm lens. Eventually the bird takes flight. How should I configure and use the body's ...
feetwet's user avatar
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1 vote
2 answers
397 views

Which actions in the camera menu/settings change the focus and which do not?

Allow me to explain the question which might seem slightly vague. One particular use case where i generally face this question is when i am shooting something during nighttime, dark conditions. In ...
silverrahul's user avatar
2 votes
3 answers
195 views

Do attachments that block the AF-assist light force you to focus manually?

I'm thinking of getting a cheap macro ring light (something like the Bolt VM-160). At the moment, when I shoot close-up shots, the AF-assist light comes on to help the auto-focus mechanism. It seems ...
George Hawkins's user avatar
1 vote
2 answers
3k views

Help! Auto-focus not working on Manual Mode but working perfectly fine on Auto Mode

I just bought and received a brand new Canon EF 24-70mm II USM lens. Already there is an issue. The autofocus works perfectly fine in Auto shooting Mode but will NOT work in Manual shooting Mode. This ...
allisonmashburn's user avatar
1 vote
1 answer
218 views

Half press on Nikon D90 triggers shooting

I'm starting to learn photography and, in one of the videos I watched, the guy said that its good to first half press the shooting button (on auto focus settings and P mode) and then full press to get ...
Mateus Neves's user avatar
1 vote
2 answers
746 views

D7200 no longer autofocusing

AF on the body of the camera M/A on the lens Back dial is not locked I've tried clicking and holding the AE-L/AF-L button Tried two different lenses Battery is full In the viewfinder, I see two arrows ...
krapzz's user avatar
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1 vote
0 answers
383 views

Auto focus won’t work in viewfinder on Aperture priority mode

My camera (Canon Rebel t7i) won’t auto focus in manual or aperture priority mode in viewfinder. (It works perfectly in liveview) Maybe it’s important to say that I’ve never shot in manual mode so I ...
Emnsmnc's user avatar
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1 vote
2 answers
2k views

confusion about the principle of on-sensor PDAF technique

There are a lot of pictures over the internet illustrating the principle of phase detection autofocus, such as this one https://www.androidauthority.com/how-pdaf-works-1102272/ The simplest way to ...
Jogging Song's user avatar
1 vote
1 answer
1k views

Nikon D5600: AF area mode (no of focus points ) doesn’t work in any of manual mode (aperture, shutter, manual) for any focus Mode?

AF-area mode (no of focus points 9, 21, 39 ) doesn’t seem to appear in viewfinder in manual modes (aperture priority, shutter priority, manual) for any focus mode (AF-A, AF-C), only it focus/shows a ...
Schrodinger's user avatar
0 votes
2 answers
63 views

D5300 Autofocus

I broke my 18-55 kit lens months ago. And i currently have no lens in my hand. But i usually hover over my camera setting for no reason. Tonight i charged my battery and then playing with the settings ...
ShakibKhan's user avatar

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