180 ED Nikkor vs modern 70-200 vs 135 Sigma ART?

Started Dec 11, 2019 | Discussions thread
swimswithtrout Veteran Member • Posts: 3,774
Re: 180 ED Nikkor vs modern 70-200 vs 135 Sigma ART?

Tomx72 wrote:

Thank you, that was a deal-saving input:) Meantime I keep finding cloudynights references where people regularly used the nikkor stopped down to f/4 - no thanks, I need something decent at 2.8, my guiding skills/equipment are not ready for 5min+ subs...

5min at f4 ?????? You're going to blow out the entire frame !!!!!!

I have the 180 AF and yes, the CA is pretty bad wide open but cleans up fairly well at f4.

At f4, I shoot 90"-120" subs , max, at my dark site....f4 is plenty fast

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