this was taken with a nikon D50 with an old Nikon PB Bellows III (from the 70's I think... it's from the nikon F system)
I have to use a small extension tube to mount it on my camera. And I am using my trusty old Nikon Series E manual focus 50mm f/1.8 lens. I used a nikon SB-28 on am SC-29 cord to light it from the side and give the drop a catch light...
On a side note, the bellowes were purchased off of ebay for $46 (in Mint shape) the extension tube was $8 off ebay, and the lens was $20
So a total of $74 (and I can get much closer than that... the extension tube was only at half extension...)