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Pardon me if this has been covered somewhere else, but can the SL 24-90 be tuned like a Panasonic S lens for a range of focus throws (90-360 degrees) on the S1/R/H? Can the focus be made linear in response? I am considering the S1H. Thank in advance for any insights.

I’ve review and analysed Richard Wong’s Panasonic Lumix S1 Autofocus Test vs Sony A7III (firmware 1.2) found on the following YouTube channel below. http://www.youtube.com/watch?v=8k3a7LNe0Mw The following are my thoughts: In the video, the AF tracking in video was compared between Panasonic S1 & Sony A7RIII side by side in three video modes/scenarios comparison of 4K25 on both, 1080P60 on S1 vs 4K25 on A7RIII, 1080P60 on S1 vs 4K25 on A7RIII on external recording. In the first scenario, the S1 appear to react in and out of autofocus slower than A7RIII. In the last scenario, The S1 appear faster in AF tracking. If it were because PDAF is a more superior and faster AF methodology, then by reducing the image processing resolution and attached to an external recording device in the third scenario will not have improved the CDAF methodology focus tracking speed employed by S1 to become faster than Sony A7RIII recording at 4K25. Furthermore, Sony A7RIII employs a hybrid AF of PDAF&CDAF with CDAF focusing on fine adjustments after PDAF has delivered the course focusing job. For Panasonic and Leica digital cameras, DFD algorithm is employed to identify the focusing direction and speed up the focusing speed to match the course focusing speed offered by PDAF methodology AF sensors. I read and understand the results and cause of comparison as when the video resolution reduces the required processing, especially after an external recording device is added, the S1 AF received increased processing power to reduces calculation time and improves focusing speed. My conclusion is the processing power that determines the AF tracking capability rather than the type of AF detection system. So my final thoughts are PDAF are not more superior over CDAF in maintaining AF focus tracking of cameras but rather the level of processing power provided to drive the AF engine is the significant factor of success to a reliable AF tracking. As this is a camera gear forum, I welcome challenging and alternative thoughts for discussion.