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-   -   Canon 400mm f2.8 II array (https://www.birdforum.net/showthread.php?t=334256)

Chosun Juan Sunday 30th October 2016 07:27

Canon 400mm f2.8 II array
 
1 Attachment(s)
Not quite too sure which forum to post this in, but figured there might be a few stargazers here who would appreciate it, even if it's mostly set up for the reverse! - using astro gear to photograph terrestrially .....
Attachment 603739
A "dragonfly" array of 24! count them! Canon 400mm f2.8L II lenses with the important SWC (although I think other manufacturer's Nano coat technologies might be just as good?) are used to spot difficult to photograph cosmic phenomena .... way to spend quarter of a million buck$!

https://m.dpreview.com/news/61962100...r-new-galaxies

Perhaps some of you DIY nutters on here might get some ideas???


Chosun :gh:

DanC.Licks Friday 4th November 2016 13:24

Very interesting! Impressive, to say the least...

Vespobuteo Friday 4th November 2016 14:42

I did some calc and it seems that this setup is equivalent to a f/0.1 lens?!!
Could that be correct?
Not possible to build a single lens that fast I guess...


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