Points A and B are drifting

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yowich
Posts: 11
Joined: 25.08.2018 06:23

Points A and B are drifting

Post by yowich » 08.09.2018 22:22

I think I have the same issue with the user 'proxohms', but it is not about the blurry images.
I set point 'A' and 'B' and started a shooting.
But after shooting, when I go to the point 'B' by clicking on the arrow beside the button 'B', then it moves and focuses on a point other than 'B' on the object.
Likewise, when I go to the point 'A' by clicking on the arrow beside the button 'A', it moves and focuses on a point other than 'A'.
Every time I set 'A' and 'B', and start a shooting, then points 'A' and 'B' are moved to different image points.
I had to calibrate points 'A' and 'B' every time I make a shooting, and it makes me spend a substantial amount of time.
I set the correction factor to 0.5 without testing and it gives me a great result.
I just want to use that number because I want to have enough number of images focused.
Do I need to do something else to prevent the points 'A' and 'B' from drifting every time I shoot?
Thanks!

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Stas Yatsenko
Posts: 3850
Joined: 06.05.2009 14:05
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Re: Points A and B are drifting

Post by Stas Yatsenko » 10.09.2018 10:40

Do the points drift if you press the large < / > buttons ("Move to A" / "Move to B") a number of times?
If yes, this is not a software issue on our part but the lens not being able to carry out movements with sufficient precision. Each lens exhibits this issue to a varying degree, and the same lens may exhibit it differently depending on how it's oriented (relative to gravity).

yowich
Posts: 11
Joined: 25.08.2018 06:23

Re: Points A and B are drifting

Post by yowich » 11.09.2018 07:20

Yeah, the number of missing steps is not always the same and seems to depend on the direction.

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