High speed lenses

Hi

I have a Phantom 5 camera which I wish to use for close-up high speed
(~10000 fps) video of a shock event. Currently I am using a Nikon 50mm
1:1.2 with a 27.5mm extension tube. I am looking for greater
magnification. My working distance is 50mm. Anybody have any ideas
on any lenses I could use?

Thanks,

Puneet

perhaps a slightly longer tube? Or add another tube?

Also, do you use this lens wide open? If not perhaps a 50mm macro lens would
work, but this would give you a max F-stop of F2.5 or so

perhaps a slightly longer tube? Or add another tube?

Also, do you use this lens wide open? If not perhaps a 50mm macro lens would
work, but this would give you a max F-stop of F2.5 or so