chrysoberyl said:
Please be sure to post your photos!
Will take a bit longer. Got the Nikon EL 80/5.6 for $40 off eBay. The Baader UV 2" is around $400, got that. The EL80 has a strange filter thread of 34.5 mm, but found an adapter for 34.5 to 48 of the Baader for $28 from Russia (Grimes wants around $80). I can get ~infinity focus with the Kenko 12 and 20 mm, so I need around 32 mm of extension for infinity. Focus shift in UV apparently is minimal with the EL80. Ordered a M42 focusing helicoid 25–50 mm, and a M42 to EOS adapter and a M39 to M42 adapter. Still have to order the 365 nm flashlight. I think the UV LED I have is 395 nm.
Re extension, with f/5.6 on a 5D2 I run into diffraction limitation with c = 30 µm and effective f-stop of f/32 at 4.7:1. So could exploit bellows extension of up to 376 mm.
Re bellows, I just settled on a M42 type bellows for $30 with over 200 mm draw (longer than most). Price is right, and I have all the M42 adapters, and various additional extension rings, so that gives me a lot of flexibility.
The EOS EF to Graflock adapter is $350, so I don't think I will go that route, particularly because the adapter adds quite a bit of extension, so infinity focus with WA LF lenses will not be possible, so that rig could not double for extreme TS beyond Canon TS/E lenses.
Hopefully I have some initial pictures before the end of the year
