Quote:
Originally Posted by ShopVac
So oddly, I was looking into these earlier...was thinking of opening a thread on it cause I know nothing of them. There's a 1.4x and a 2x. Are they worth it? Which one?
Do I need to worry about distortion? How bad does it effect the aperture (looks like it would take a f/2.8 to an f/4.0)
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I have the Siggy 2x TC for my 120-300 f2.8. I think it works great. The newest Siggy TCs can be adjusted via the USB dock, which I'm assuming your lens can use. And yes, the 1.4 takes it to 4.0 and 2x takes it to a 5.6.
The 2x TC-2001 is $400 and the 1.4x TC-1401 is $350, so it might be worth it to rent them first to see if you like them.
This was shot with my 120-300 with the 2x TC mounted for 600mm.
Moon 12-19-15 by
Mark Johnson, on Flickr