Micro Adjustment Canon 7d Mark Ii

By | 09/08/2022

vett93

vett93 •

Veteran Member

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How does 7DII handle AF micro-adjustment and Focus Shift?

I empathize that one has to practise micro focus adjustment for each lens to get maximum sharpness with DSLR camera. Since these cameras practise AF with lens’ max aperture, does information technology focus shift with dissimilar discontinuity values in actual use?

For example, if I do AFMA with discontinuity broad open up, say F2.8, I will get one starting time value. But if I use F5.6 to have a photo after on, does the photographic camera know that it has to adapt the focus indicate for that lens at aperture F5.6 for potential focus shift?

My 7DII is my first DSLR. I have 3 Sony mirrorless cameras. They don’t have such bug. The AF is on sensor and so I don’t accept to do AFMA. Also, it does AF at the aperture I use, instead of wide open similar DSLR, I don’t take focus shift bug. Now I am onto a new territory. So any communication on them would be appreciated.

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RogerZoul

RogerZoul •

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Re: How does 7DII handle AF micro-adjustment and Focus Shift?

vett93 wrote:

I understand that 1 has to do micro focus adjustment for each lens to get maximum sharpness with DSLR camera. Since these cameras do AF with lens’ max discontinuity, does information technology focus shift with different aperture values in bodily utilize?

For example, if I do AFMA with aperture wide open up, say F2.8, I volition go one kickoff value. But if I employ F5.6 to take a photograph subsequently on, does the photographic camera know that it has to accommodate the focus point for that lens at discontinuity F5.6 for potential focus shift?

My 7DII is my first DSLR. I have 3 Sony mirrorless cameras. They don’t have such issues. The AF is on sensor and so I don’t have to do AFMA. Also, information technology does AF at the discontinuity I utilise, instead of wide open similar DSLR, I don’t have focus shift problems. Now I am onto a new territory. So any advice on them would be appreciated.

The 7DM2 doesn’t take such issues either. I have never needed to practise AFMA on any of my bodies and all of the lenses I take.  Just because you tin can practise AFMA, doesn’t mean you lot demand to.



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Re: How does 7DII handle AF micro-adjustment and Focus Shift?

vett93 wrote:

I understand that one has to do micro focus adjustment for each lens to get maximum sharpness with DSLR camera. Since these cameras do AF with lens’ max discontinuity, does it focus shift with different discontinuity values in actual use?

For case, if I exercise AFMA with aperture wide open, say F2.8, I will get one showtime value. But if I use F5.half-dozen to take a photo later on, does the camera know that it has to arrange the focus bespeak for that lens at discontinuity F5.6 for potential focus shift?

No, AFMA doesn’t accept focus shift into business relationship. Nearly lenses don’t suffer from focus shift to whatsoever meaning degree, but for those that exercise AFMA is not a solution.

My 7DII is my first DSLR. I have iii Sony mirrorless cameras. They don’t have such issues. The AF is on sensor and so I don’t take to practise AFMA.

That’due south correct, and you tin of class use on-sensor AF with Live View on the 7D2. But at that place are significant advantages to traditional SLR focusing every bit I’m certain you lot know so this is a trade-off.

As well, it does AF at the aperture I use, instead of wide open like DSLR,

It focuses stopped down? I didn’t know that. Are you certain?

maarensv

maarensv •

Senior Member

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Re: How does 7DII handle AF micro-adjustment and Focus Shift?

Steve Balcombe wrote:

Also, it does AF at the aperture I use, instead of wide open like DSLR,

It focuses stopped down? I didn’t know that. Are you certain?

I was thinking the same thing. AF while stopped down would probably make AF more difficult.



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