I was actually referring to innate optical physics, but as I've said yes, it's pretty much negligible. Some reports show its centre sharpness to be greater than the older version but corner sharpness not so much, also something I won't worry about because I don't take chart photos... well I do for my photomacrography work, but it's not something I want to be known of. "Oh it's that guy, he specialises in taking photos of quartz glass resolution charts and snobbery!" haha
Phased Fresnel elements reduce CA greatly with just one element (rather than heaps, looking at you Sigma, which causes colours to be pale and unpleasing), at the cost of weird flaring with some odd colour casts at certain angles. This is also something I just do not care about. My laowa 12mm flares extremely strongly at a particular angle, but in real world shooting, it never happened.
Exactly. You have to
try to make this lens take a lousy photo. In the real world, esp. in optimal light, the colors it produces are sublime and realistic.
The 300/4E PF + D500 combo is also Steve Perry's favourite hiking combo, that's telling! He carries a tc14e3 in his pocket too.
Yep. Once you've experienced it, it's hard to go back to anything else. My TC III is simply glued to my lens. Never need to take it off, unless photographing inanimate objects.
This lens is somewhere on my list, also I might have to decide between it and the 200-500 which is chunky, but has great optics, VR, and I don't mind using a monopod when I hike. It's the most I'm willing to endure myself in terms of weight. The 200-500 is certainly a lot cheaper.
There's a reason the 200-500 is cheaper: its optics are good, not great
I think Perry compared the two, and even with a TC the 300 PF is sharper. At the long-end, the 200-500 does give a hair longer reach (vs. 420 w/TC), but the difference in size/weight/portability is literally night and day. After Perry's comparison, while he did say the 200-500 offered an occasional advantage, the most important observation to remember is
which one he kept for hiking
Aiming to upgrade to the d850 first, the ergonomics of my d810 is just bad for my macro needs. I do stuff that goes beyond 2:1, not having a flippy touchy screen deducts greatly from the photographic experience. I might just try out the 70-200 with a TC first to see if wildlife is my cup of tea or not, before going into the mind war of 200-500 f/5.6E VS 300 f/4E PF.
If you're worried about price, the 70-200 is more expensive than either, and far less desirable as a wildlife lens. It's more a 'nature, sport, and portrait' lens, than for animals (which invariably need far more reach).
Like I said, the 200-500 is capable of producing excellent photos. So is the 300 f/4 PF + 2x TC.
The difference is the 200-500 is 3x the weight, and 3x the length (fully extended), and nowhere near as convenient to deploy. (I personally owned the even bigger, even better, Sigma 150-600mm sport, but it is no fun to go hiking with
)
While somewhat smaller, the 200-500 remains a behemoth lens compared to the compact 300 PF. Look at both attached to a camera, and remember the fixed prime 300 f/4 PF edges the other in image quality. Of course, we all have different tolerances/preferences, but if a person were to make a benefit/liability line-item assessment chart, for the hiking photographer, the 300 f/4 PF would offer 10+ advantages to every one advantage the 200-500 might have.