Got a few EF 400/2.8's lying around?

[Frodo]

Amazing astrophotography project using a couple of dozen of these lenses.
https://petapixel.com/2021/11/19/researchers-bundle-24-400mm-lenses-into-massive-telescope-array/

 

[kaihp]

Ah, the Project DragonFly expands. Looking to end up with 168 400mm f/2.8 lenses.

 

[koenkooi]

Canon will be expanding its support of the project and will be providing technical assistance to the team as well as an additional 120 EF 400mm f/2.8 IS II USM lenses

I've been seeing a number of projects lately where Canon is donating their previous versions. Good to see those don't go to waste!

 

[AlanF]

I've been seeing a number of projects lately where Canon is donating their previous versions. Good to see those don't go to waste!

Pity the Dragonfly project isn't being used for DIF...

 

[Kit.]

Pity the Dragonfly project isn't being used for DIF...

Dragons In Flight?

 

[AlanF]

Dragons In Flight?

Yes!