On 2018-05-01 02:14:48 +0000, Davoud said:

I wouldn't invest in a wildlife lens before looking at the
soon-to-be-released Questar 5.

According to the specs, linked below posted by RichA it's a 1780/14
elephant... I'll will check out my "new" 500/8 mirror before a bring
one of those on a safari! Just waiting for the T2-EF adapter...

https://www.cloudynights.com/uploads/monthly_04_2018/post-138049-0-94441400-1524532747_thumb.jpg

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teleportation kills