Linked Questions

1 vote
2 answers
839 views

Why are subject's eyes out of focus with EF 28-70mm F2.8 L?

I purchased an older 28-70mm F2.8 L Series lens. I'm trying to use it to take portraits on a Canon 5D Mark III. However, when I use autofocus at 70mm, the eyes are not in focus and the face seems ...
Mowrite's user avatar
  • 11
0 votes
2 answers
869 views

Do my photos look blurrier on a newer, higher-resolution camera body because my lens has a problem?

I have a Canon EF 100-400 1:4.5-5.6 L IS USM (the old version, not the II) zoom lens, which I often use for bird photography. I used to have a Canon 10D body, which I used in combination with this ...
CesarGon's user avatar
  • 103
0 votes
2 answers
217 views

Calibrating a lens...is auto focus less reliable when zoomed?

So, I'm calibrating my lenses to a new camera body, a 5D Mark IV. When calibrating my 70-200 ƒ2.8 (version 1), I found that the focus was accurate at 70mm. However, when I calibrated it at the 200mm ...
Darrin's user avatar
  • 11
0 votes
2 answers
17k views

Canon 50mm f1.4 no longer focuses reliably

On my Canon 6D, other lenses work as expected. But my 50mm f1.4 which has been very reliable for many years is not focusing correctly. It can sometimes focus when the subject is close (1-5' away). ...
Sajee's user avatar
  • 211
0 votes
2 answers
1k views

Does this test chart show that my kit lens front focused?

I just bought me a Nikon D7100 with 18-140 kit lens. When I used focus test chart page 18 to test my camera and lens I got one of following result at 35mm/f4.2. I used Nikon's ViewNX2 to open the raw ...
hardywang's user avatar
  • 273
11 votes
1 answer
1k views

How can you tell if a lens is having problems with back focusing?

I recently bought a Canon EF 24-70/2.8L to use with my 450D and I suspect that it is constantly back focusing. Is there any way of determining if it is something wrong with the lens or if it is a ...
Mathias's user avatar
  • 381
8 votes
1 answer
16k views

Can I fine tune the autofocus on my Canon 60D to be more accurate?

I noticed that some of my lenses auto-focus more accurately then others. (Assume perfect light conditions and fast shutter speed) Zooming-in on say the center focus point (if only the center focus ...
Jakub Sisak GeoGraphics's user avatar
4 votes
1 answer
1k views

Do mirrorless cameras focus less or more accurately than SLRs under low light?

How do the following compare in terms of autofocus accuracy for night photography: Mirrorless cameras like the Sony NEX-5R, in hybrid autofocus mode. The NEX-5R, in contrast-only autofocus mode. A ...
Kartick Vaddadi's user avatar
4 votes
1 answer
11k views

How can I fix my Nikon D7000's back focusing problem?

After using a new Nikon D7000 camera for awhile, I've found that that my camera has back- focusing issues - many images are out of focus, even portraits or focusing on near objects where I have ...
Hardy's user avatar
  • 143
4 votes
1 answer
2k views

Is the Quality Inconsistent on the Canon 24-70mm f/2.8 L MkI lens?

I'm considering buying a Canon 24-70 L Mk I. There is one thing that scares me a bit, though: reading reviews around the intertubes it appears that a fair number of people had to send their copy back ...
s.m.'s user avatar
  • 163
3 votes
1 answer
1k views

Pictures of surfers start in focus then go out of focus?

I was recently shooting some surfers after a session with my 7D and Tamron 18-270mm F/3.5-6.3 Di II VC PZD. I started shooting while he was in focus, then as he got to the main part of the maneuver ...
Cole Y's user avatar
  • 31
1 vote
1 answer
2k views

How to find out perfect autofocus adjustment value? [duplicate]

Possible Duplicate: What is the best way to micro-adjust a lens? I have D7000 for some time and all of my nikon lenses were working fine. But I have bought Tamron 28-75 recently and it's ...
zacharmarz's user avatar
0 votes
1 answer
3k views

Best AF Fine tuning for Nikon D7000 lenses [duplicate]

Over the last few months I've been noticing an annoying back - focus problem on my Nikon D7000, regardless if I was using a AF-S or AF lens. But the problem seems ...
Mauker's user avatar
  • 143
0 votes
1 answer
829 views

Does manual focus carry over to a different aperture, lens or focal length?

This is in the manual focus mode. If I focus my lens so that a certain object is clear and crisp, and then do one of the following, will I have to focus again? Change the aperture Switch to a ...
Kartick Vaddadi's user avatar
0 votes
0 answers
108 views

What are these bands called? [duplicate]

I wanted to know what this sort of distortion / artefact is called?
Riddhiman Dasgupta's user avatar

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