Agreed, although I understand that Steve is limited by the lenses he owns, and he know longer owns the 200-500. But aside from the comparison with the Sony 200-600, I think Nikon shooters would find the comparison with the 200-500 of great interest. It’s basically the Z replacement for the 200-500. I suspect a good number of F mount owners on the fence about going mirrorless may be considering whether the 180-600 might make it worth jumping ship.
I'd be very curious, too. It's mildly interesting to hear "equal to the Sony" because I hear people praise the Sony, but I have no real experience with it so it's also of limited value to me. At this point my real decision is probably between the 180-600 and something like the 500pf. Obviously the 500pf will be sharper, but the zoom has the versatility of a zoom. In replacing my 200-500 I don't need $3500+ worth of sharpness, but I do need
reliability in the ~$1500 worth of sharpness, which is what I feel like I am really lacking and constantly fighting with the 200-500. I get sharp photos with it at times, but boy do I ever have to take hundreds just to get one or two that are okay. Meanwhile I know others spend time culling their hundreds of sharp shots to find those handful that are pristine and perfect, or to pick the one with the best wing position or facial expression out of their dozens or hundreds of acceptably sharp choices. I'm never in a position to choose my favorite wing position or background because I am having to take the ones that wind up sharp.
As I type this I'm also going through a bunch of photos from a morning out at a fair with the family, some photos taken with my 200-500, others with the 70-180/2.8. The 200-500 sections is like searching for a needle in a haystack, just trying to get the ones that are usable. The 70-180 sections are so different: 85-90% of them are sharp and I just need to pick the ones I like the best.
For instance, this (molting?) cardinal (
) We've all probably seen sharper, but it's plenty good enough for me. This is from a pair that is always around my backyard. I tried to get a photo of the male at the very same time as this, but they were awful. I even tried increasing the shutter speed after reviewing on the LCD and seeing they looked poor and wondering if it was motion blur since I was keeping the SS down at that time, but still to no avail. Bear in mind this is in my yard in a location where I've never really noticed IQ problems due to heat or atmospherics, and on a day when I'd be less likely to expect that sort of thing even if I were at a more susceptible location. I did find one that was... okay and that's also on that flickr page, but it still in my view doesn't compare to the female shot and with not clear reason as to why there's a difference (he's on a single roof in the one photo I found that was okay and so someone might suggest it's too hot on that surface, but I've also got plenty of terrible photos of him on the same branch as the female).
Everything I've read and heard about the 500pf makes me believe I'd get that kind of reliability from it - of course, at the expense of the zoom. In fact, I've even found a number of other people who specifically report their experience of moving from the 200-500 to the 500pf and finding exactly what I am looking for: that suddenly, a much higher percentage of their shots were consistently sharp and in focus. Yet I do like the zoom on the 200-500: it's very useful and I have absolutely gotten good shots I'd have missed if I were locked in at 500mm. That's why what I really want to know is how the lens performs compared to the 200-500: with the 180-600 would I be getting the strengths of the old F mount lens without (or with significantly less) of its weaknesses? Or, would I be getting a slightly sharper, slightly faster native Z mount lens that still leaves me frustrated with too many missed shots?
I think that's really want I need to figure out and would like to somehow see in a comparison.