It is not a macro but is a close focus lens with maximum magnification of .34 and a minimum focus distance of 17.72 inches. This makes it a really good walk about lens.
I use the Nikon SB-900 or the SB-910, I would not use the better beamer. Instead use MagMod's wildlife kit. If you send me your email I'll send you a PDF I wrote about using flash with birds, my email is Larrys@bex.net.
Just watched it and got some good tips. I had come to the some same conclusions after extensive testing with my Z50, Z6 and Z7 cameras. I am looking forward to a Z camera that will have the AF of my D5.
Found this description on Amazon for the Nikon D5: https://www.amazon.com/Nikon-Point-Shoot-Digital-Camera/dp/B01A7Q0DVM/ref=sxin_2_osp16-f03fcdfe_cov?ascsubtag=amzn1.osa.f03fcdfe-e8d8-4fc0-9bf3-956b5a870629.ATVPDKIKX0DER.en_US&creativeASIN=B01A7Q0DVM&cv_ct_cx=nikon+d5&cv_ct_id=amzn1.osa.f03fcdfe-e8d8-4fc0-9bf3-956b5a870629.ATVPDKIKX0DER.en_US&cv_ct_pg=search&cv_ct_wn=osp-search&keywords=nikon+d5&linkCode=oas&pd_rd_i=B01A7Q0DVM&pd_rd_r=3984201c-e571-41e3-90b5-6333196ec1b4&pd_rd_w=UCKFE&pd_rd_wg=EdZXH&pf_rd_p=dac4d66e-658f-4cae-b10d-a35ac5eca0c3&pf_rd_r=BHKQ64G6XSRB37WF0496&qid=1584973719&tag=dpreview047-20
I have one and I have it set for back button focus. The settings for the Z 50 and the same settings that I use for the Z 6 and Z 7 so look for info on them. The AF and tracking on the Z 50 is very good. Some photos of it for flying birds are here on my website: Photos 613-651 @ https://gofish.smugmug.com/Nature/Guntersville-2012-2013/i-Ggw2NjF Click on the round info button at the lower right of the photo to see the lens info.