Sweet spot after 2x tc


maisatomai

Deregistered
Oct 26, 2006
357
0
0
#1
Let say a f2.8 Lens sweet spot is at f5.6. If u add an 2x tc will the sweet spot remain at f5.6 or f11?
 

Rashkae

Senior Member
Nov 28, 2005
19,105
12
0
#2
The lens' sweet spot will stay at f/5.6, however the *effective* aperture is similar to f/11 in terms of light loss.
 

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