(09-10-2018, 12:23 PM)JJ_SO Wrote: Are you going to "probably considerig to buy it in the very far future", Rover? The very few people who can afford and are willing to carry this kind of optics will most likely rent one and the decide if it suits their needs. I think it's hard to make a rig stable enough to test these things - and the usual test parameters might be useless if it has a) slow AF or b) issues with WR or c) can't take a bump.
Roie Galitz took the new Nikon 500/5.6 PF with him to Kamtchatka to compare it with his 500/4. See also https://www.dpreview.com/articles/388997...-kamchatka
Take away from the essay was, although he liked and welcame the low weight, he prefers having one stop more and get the shot at dawn or sunset.
No, not in a million years. Even if I had had the money I'd never consider dropping so much down this hole. I'd be better off with a 100-400/4.5-5.6 lens (a specimen of which I incidentally have) and a round-the-world trip behind my belt. Besides, the onset of arthritis means I'd better start planning to get rid of the heavy gears I already have, not buy some more of the bricks.
I've read that article about Kamchatka. Funny that me and my wife were once considering a vacation there but the high price turned us off this. Apparently there's no bonus to being a citizen of the same country - if you're a tourist, they're gonna milk you but good.