Having factory re-set all camera settings, unfortunately the problem has not been resolved.

All the variables you mentioned remained constant (aperture, focal length and correction factor).

Helicon Remote, in the example i have tried today, when points A and B are set and saved, calculates the ...

Thanks for the reply. I sent an email to <[email protected]> dated 29 May 2020 with full details of the issue and screen grabs. The aperture value remained constant throughout and the focal length will have 100% not have changed as it is a 90mm prime lens. The only adjustments were made via the ...

I will start with the fact the the programme was working flawlessly up till now, with the same camera body and lens.

When I set focal point A as the nearest point, then set Focal point B as the farthest - when I start shooting the camera either overshoots or undershoots Focal point A and does not ...