Linked Questions

0
votes
1answer
286 views

When I point my D5100 at a plain wall, why does it keep trying to focus instead of taking a picture? [duplicate]

D5100: When i point to a wall, and use shutter release button, it just tries to focus and that is it?why so?
1
vote
1answer
110 views

Is there a way to avoid focus searching? [duplicate]

While using my camera in a relatively low light scenario I noticed some shots I missed because my camera was struggling to focus. I use a Nikon D7100 and noticed that the AF assist light only came on ...
13
votes
4answers
2k views

Why doesn't auto-focus work with an all-white subject (like a wall)?

I am trying to compose a shot using my Nikon D60 and 18-55mm lens towards a white wall in a auto-focus mode. It looks like I am not able to take the photo. I feel the camera is not able to find any ...
35
votes
3answers
13k views

How does autofocus work?

How does auto focus work on modern cameras? How accurate is it?
3
votes
2answers
1k views

What could be causing focus problems in low light?

I am not a professional photographer but shoot outdoor and indoor pictures, weddings, and portraits as a hobby. I use a Nikon D750 with a 70-200mm 2.8 VR lens and a 35mm 1.8 ED lens. I have been ...
2
votes
1answer
2k views

Nikon D5100 shutter button not working

I'm having problems with my Nikon D5100, generally when I first pick it up it will work fine for 3, maybe 4, shots then the button just stops working, I press it but nothing happens. If I change to ...
2
votes
3answers
419 views

Why is my Canon 70D's liveview autofocus much worse than the viewfinder's?

First of all I came across these questions already: My viewfinder won't autofocus but live view focuses well Canon 600D Autofocus not working when using view finder but working in live-view Why is my ...
0
votes
1answer
908 views

Why doesn't my Sigma lens autofocus if the subject is initially way out-of-focus?

I have a Sigma 150mm F2.8 EX DG OS HSM APO Macro lens mounted on my Canon 6D. Even if AF mode is set to minimum-to-infinity range, if my subject is way out of focus (too far or too near), like, say, ...
2
votes
2answers
282 views

Lack of Focus/Sharpness on Zoom

I have recently taken what I thought were hundreds of amazing pictures of a group of seals on an CA beach - only to find every single picture is clearly out of focus or lacks sharpness. A sample ...
0
votes
1answer
432 views

Focus box on the screen turning red on my canon 800D

I'm very new to photography, I have a EOS 800D. Sometimes I try to take a picture, noticing the focus box on the screen is red not green which won't let me take a picture. Why is that?