First off, I dont know for sure if this is close/cropped enough to be considered a macro. If not, my bad.
3 out of 4 tubes from my guitar amp. 2 recent production, one vintage.
Slight contrast boost, B&W and tone shifted a little bit IIRC.
Nikon D60 35mm 1.8
f/2
1/10th sec
ISO 100
No flash
I'm looking for any input you may have.