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.

Filter by
Sorted by
Tagged with
0 votes
0 answers
167 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 ...
user avatar
1 vote
1 answer
155 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 ...
user avatar
  • 11
-1 votes
1 answer
177 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 ...
user avatar
0 votes
2 answers
181 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 ...
user avatar
0 votes
0 answers
128 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 ...
user avatar
  • 101
0 votes
1 answer
426 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 ...
user avatar
  • 1
0 votes
1 answer
130 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 ...
user avatar
2 votes
2 answers
118 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 ...
user avatar
5 votes
5 answers
499 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 ...
user avatar
  • 1,493
0 votes
1 answer
181 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 ...
user avatar
0 votes
1 answer
155 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....
user avatar
  • 1
3 votes
1 answer
290 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 ...
user avatar
0 votes
0 answers
147 views

Is there an EF to MFT adapter that is known to work well with Sigma's or Tamron's 150-600mm lenses?

I own a Panasonic Gx9 camera and a 100-300mm lens. That gives nice reach, not that more reach could not be even nicer (for waterfowl, etc.) Is there an adapter for Micro Four-Thirds that has good ...
user avatar
  • 1,529
1 vote
1 answer
349 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 avatar
0 votes
1 answer
81 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 ...
user avatar
  • 3,503
1 vote
2 answers
366 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 ...
user avatar
2 votes
3 answers
80 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 ...
user avatar
1 vote
2 answers
649 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 ...
user avatar
1 vote
1 answer
106 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 ...
user avatar
1 vote
1 answer
124 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 ...
user avatar
  • 11
1 vote
0 answers
176 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 ...
user avatar
  • 11
1 vote
2 answers
576 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 ...
user avatar
0 votes
1 answer
613 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 ...
user avatar
  • 131
0 votes
2 answers
50 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 ...
user avatar
1 vote
1 answer
229 views

Dismissing red frame in close up [Canon EOS M50]

Is there a way to take a shot even though the red frame indicating out of focus appears? When I am trying to take a picture few inches away from something the red frame appears. Someone asked similar ...
user avatar
  • 13
0 votes
1 answer
164 views

Why is my Nikon dSLR taking so long (7 seconds) to autofocus?

I think my D5000 (or lens?) AF is malfunctioning, but I'm not sure. I'm using the stock lens (Nikon DX, AF-S NIKKOR 18-55mm) It takes seconds (like 7 seconds) for it to find focus and seems to keep ...
user avatar
2 votes
1 answer
131 views

Can a lens affect relative performance of autofocus points?

I am comparing the autofocus performance of my Nikon D800 with two lenses, A Sigma 150-600 C (post sigma-dock calibration) A Nikkor 50mm 1.8G (post AF fine tune). Both lenses focus well with the ...
user avatar
1 vote
1 answer
134 views

Can an infrared light source be used for focusing in the dark?

When I shoot pictures of badgers I recently found that the Nikon D500 + 200mm F/2.0 is a great combination. Badgers often come out very late when its quite dark but they cant see too well so you can ...
user avatar
  • 1,493
0 votes
2 answers
4k views

Why won't my Fujifilm X-T2 take pictures when I press the shutter?

I'm having a problem with my Fuji X-T2; it doesn't make pictures anymore. When I try to press the shutter, it will focus and it makes the focus sound but then it does nothing when I press the shutter ...
user avatar
  • 31
3 votes
2 answers
330 views

Does the number of phase detect auto-focus points affect focus accuracy in mirrorless cameras?

Does the number of phase detect auto-focus points affect focus accuracy of a mirrorless camera? And if so, how and why? I am considering buying either a Nikon Z6 II or a Z7 II. They have 273 and 493 ...
user avatar
  • 143
2 votes
2 answers
142 views

Eye-AF from Nikon Z6 is inconsistent or fidgety

I have a Nikon Z6 – latest firmware (ver. 3.12, from October 2020). As far as I can remember since Eye-AF was first introduced in May 2019, I've been having a hard time have the eye-AF locked on the ...
user avatar
5 votes
1 answer
136 views

What does "number of AF points" mean in scope of Canon's Dual Pixel AF

According to the Canon's Dual Pixel AF system paper, "EVERY pixel on the sensor can provide AF information [skipped]. Figuratively speaking, instead of hundreds of potential "focus points,&...
user avatar
  • 153
2 votes
3 answers
544 views

autofocus shown in viewfinder and captured on actual pic is different

Equipment : Nikon D7000, Godox Flash on camera with soft box diffuser. Background: I have been assigned the task by my family to make portrait albums of the identical twins born to my close relative. ...
user avatar
2 votes
2 answers
47 views

Use of AF button and AF Mode in Canon DSLR?

In Canon 1300D DSLR with Telephoto Lens, I have the doubt on the use of, the AF switch on the lens and Auto Mode in the Camera Mode Dial. When to use either of this, or is the AF/MF switch something ...
user avatar
13 votes
3 answers
4k views

Macro photo that I cannot repeat

I have an iPhone SE 2 with pretty standard 12MP camera and as I was sitting on our porch and browsing the web I randomly enabled the main camera and took a shot of my sweatpants fabric (no joke here): ...
user avatar
5 votes
2 answers
850 views

Does cleaning the camera sensor affect its autofocus capabilities?

I cleaned my dirty sensor of nikon d3400 few days back and the dirt spots are gone now. But a random thought came to me which is troubling me now. I wanted to know if cleaning the sensor could alter ...
user avatar
  • 53
3 votes
1 answer
189 views

What part of Canon 50mm f1.4 is responsible for failure to autofocus?

I have the Canon 50mm f1.4 which had the common focus issue due to deformed inner focus ring. I have straightened the ring and the lens now had full range of manual focus, but Autofocus cannot find a ...
user avatar
  • 31
3 votes
2 answers
111 views

Unable to take the shot when subject is moving fast

I am recently trying to experiment with types of photography that I have not done much before before. One of these is photographing subjects that are moving towards or away from me. But I have ...
user avatar
  • 761
1 vote
1 answer
535 views

How do I fix the autofocus on a Polaroid Sun 660?

I need help with one Polaroid Sun 660. It seems that autofocus is not working at all. After investigation on internet I noticed that this camera has a four- disc lens, so every time you press the ...
user avatar
  • 21
3 votes
2 answers
193 views

How to proper focus for sharper images?

For shooting landscape photos, what is better using manual focus or automatic focus? I seen a lot of people who focus with automatic focus then switch to manual focus, is this so the focus doesn't ...
user avatar
1 vote
2 answers
107 views

Different focus on different parts of the picture

I have a problem with the camera on my Xiaomi Mi A2. It mainly occurs when I take pictures of things far away. This problem is consistent. I have added a few pictures. You can see in one of the ...
user avatar
0 votes
2 answers
334 views

Why is my Nikon D5500 unable to lock focus while using Live View but works fine when using the ViewFinder?

It just keeps trying to find focus. If I press the half-click focus button I hear the motor moving and the numbers on my lens go from smallest to infinity and stop. If I press the half-click focus ...
user avatar
1 vote
1 answer
506 views

Fuji 35mm 1.4 stuck in manual focus mode?

I know that to go into autofocus mode the lens ring needs to be pulled out. However mine is completely stuck! I am a member of the Fuji VIP program and have received a faulty lens before. I got ...
user avatar
4 votes
2 answers
1k views

Why won't a Tamron AF LD 200-400mm f5.6 model 75DN autofocus on Nikon D3300? [closed]

Can anyone tell me how to work the autofocus on a Tamron AF LD 200-400mm f5.6 model 75DN? I have tried numerous settings on the f-stop ring with no success and there is no auto/manual switch. It will ...
user avatar
1 vote
1 answer
164 views

What could cause the focus to be off in some images and not others?

I took a number of photos like the one here. Each was at the same settings but each time I asked the camera to focus (with a single focus point) and the focus point right on the girls face. The ...
user avatar
  • 345
1 vote
2 answers
181 views

Canon T7i focus indicator misbehaving [duplicate]

On my Canon T7i, in the viewfinder, there is a circle that shows up when focus has been achieved. That is not functioning correctly now. I am using it with a 24mm f2.8 Canon lens. The focus ...
user avatar
  • 1,038
0 votes
2 answers
101 views

Nikon D-750 autofocus not working

The autofocus doesn't work on my 2 year old Nikon D-750. Doesn't work with any of my lenses. The AF is set on both the camera body and lens.
user avatar
1 vote
1 answer
361 views

EOS 5D Mark III for photo and video in 2020 [closed]

Is the 5D Mark III a good DSLR for both photography and videography in 2020? Does it support features such as tracking or continuous AF in video mode? I did some research but I didn't find a clear ...
user avatar
0 votes
1 answer
151 views

How big is an AF-Point in a Nikon camera?

I have a Nikon D7500 and am looking for information regarding the size, in pixels, of each individual AF-Point in the 51-point AF system. When stored in NEF files, Nikon references their AF-points in ...
user avatar
  • 1
2 votes
3 answers
151 views

Remote flashlight device for focusing in an off-camera flash scenario

I was shooting in a fairly dark room with two Yongnuo YN560 IV off camera in softboxes and a Yongnuo YN560-TX II on the camera to trigger them. I was not able to focus without having someone hold a ...
user avatar

1
2 3 4 5
15