Image misalignment (Autofocus Issue?)

[wildwoodphoto]

I'm shooting multiple frames on a fixed subject using a remote trigger. I shoot some without flash, and then some with flash. When I review the images, there is some misalignment from frame to frame, even though I am not near the camera, nor am I touching settings on the camera as I am using the remote.

Before taking some of those frames when pressing the remote, I can hear the lens autofocus motor. I thought perhaps the issue was half depressing the trigger, but this also ocurrs on a full press.

Does this misalignment sound like an autofucs issue, if so, what settings would correct it?

[rs-eos]

It sounds like for each image, the camera is refocusing which can at times acquire different points.

If the goal is to capture multiple frames without changing focus, depress the shutter half-way to acquire the required focus.  Release, then switch the lens to manual focus.  Take the images you need thereafter.

[wildwoodphoto]

I really don’t want to use manual focus. No other solution with autofocus?

[rs-eos]

You won't be manually focusing anything.  You'd be setting the lens to manual focus so that it will keep the focus as-is while you take your multiple images.

When you need to focus on something else, switch back to AF, focus, switch back to MF then take the multiple images.

In this manner, your multiple images will be captured with the same exact focus point.

[wildwoodphoto]

I understand your solution thank you. My concern is that given my type of work, I may forget that the lens is set to MF.

Is there no AF setting that simply locks focus (like single point focus)?

[kvbarkley]

Is IS on? If you are on a tripod, and depending on the lens, the IS could be drifting.

[wildwoodphoto]

IS is OFF

[wildwoodphoto]

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@rs-eos wrote:

You won't be manually focusing anything.  You'd be setting the lens to manual focus so that it will keep the focus as-is while you take your multiple images.

When you need to focus on something else, switch back to AF, focus, switch back to MF then take the multiple images.

In this manner, your multiple images will be captured with the same exact focus point.

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I have done multiple tests, using different triggers, shooting modes etc.

I did as you suggested and set AF and then switched the lens to MF. I took three frames in sucession without touching the camera. Opening these in PS there is still a small misalignment between each frame. 

The ONLY test that showed zero misalignment was using Canon Connect.

What to conclude?

[AnthonyHayzen]

Suggest you use back button focus that way once you’ve focused it won’t change when you take a photo

[wildwoodphoto]

How do I do this using a wireless remote?