reikan focal pro lens calibration unboxing

What I was wondering about is I've read that doubling the results and entering those values to the dock settings is needed and some mention it's not needed. Calibrate the lens at all 4 distances using FoCal and make a note of all 4 results. These results have surprised me as I could have saved myself £69.95 LOL! Take the 4 distances from the dock software. I have tried Reikan FoCal and the Dot Tune and the results are the same or very close to each other, I had to switch to the Dot Tune method for infinity though. It currently supports over 40 cameras and claims to be the only automatic autofocus calibration solution for DSLRs. Focal has been around for 10 years, having been first released in 2011. The updated version practically rewrites code for the software. The type of photography is fast jet aviation, shots are handheld. Reikan has just released version 2.9 of its autofocus calibration software, FoCal. Sigma 150-600 C, usually zoomed in from 500mm to 600mm with the focus switched to AF, set to 10m-infinity, OS switched off and Custom switched off.

Nikon D500, usual setup in manual with the shutter speed from 1250th upwards, ISO set to Auto, f8 to f10 Reikan FoCal pro suggested f10 to be the best aperture for this lens. I was experiencing soft images hence the need for calibration.

Reikan focal pro lens calibration unboxing