Yes it is true true true, the FE100-400GM is crazy sharp. It easily beats the EOS 100-400ii which I though was outstanding.
With either TC it still yields excellent performance. But F11 is F11, can't get around that. Even I don't like ISO 12,800 on the a9.
I'll truly see how the 2.0TC does at Conowingo. Last year with 500ISii + 1.4TCiii and I was just enough for focal length and the distance
the birds were. 800mm on the Sony will be really interesting if there is light. I've been to Cono when the light was abs. horrible.
You should think about attending David...it really is a lot of fun and there will be many there from POTN and FM.
The 500ISii was a very sharp lens, but not sharper than the latest Sony zoom. But fixed F4 was nice....one reason I'm still sitting on the
400DOii, it takes a 2.0iii very well too and either way (100-400gm or 400DOii) I'm still way lighter than 1DXii and 500
Interestingly we're taking the campervan. No place to camp up there, but Poof likes a warm place to sit, read, internet, etc. while I shoot.
She'll shoot too but once she gets one or two she'll be done. Last year she took off on a hike down and back to the state park down river.
Now I bet I'll get some laughs but if I can get a keeper or two with the a9+100400gm then I'm pulling out the RX10iv.