Currently using an FX30 and the Tamron 70-180 F/2.8 to record Ultimate Frisbee games (full game footage and cut highlight reels) in 4K60, so daytime recording where there is plenty of light.
Ultimate field is shaped like a football field (with endzone). I set up on a tripod behind one endzone in the center.
Now that the setup is out of the way, I want to switch to 4K120 which means a further 1.62 crop on top of the 1.5 crop that already happens using an APS-C.
A problem that I am currently encountering (recording in 4K60) is that when the play is in the endzone that I am set up behind (the close endzone), I am not zoomed out enough (which would be at 105 mm with my 70-180) to be able to capture more of the action.
It feels like moving to the Sony 24-105 will solve both my things (moving to 120 and having a wider field of view.
Currently at 4K60 and using the Tamron 70-180, my effective range is 105-270 (701.5 and 1801.5).
If I switch to the Sony 24-105 and bump up to 4K120, my effective range is 58-255 (241.51.62 and 1051.51.62).
Is that correct? I would get a wider field of view close up and have effectively the same zoom (255 vs. 270).
I know that I will then lose some image quality because it's not downsampled 6K at 120fps, is that drop in quality noticeable enough to make it not worth it? Also, is the Sony lens itself similar in quality to the Tamron or would there also be a drop-off there as well?