I ended up getting both both

Great video - thank you for the comparison work!

Hi Sean, I will get z400 instead of z100-400, coz I already have z180-600 in hand, thank you for your information.

Great video. Loved the focus comparison. Very useful, though I’d imagine it was a lot of work. Love the tee shirts 😊

Wow!!! Great comparison!!! I was on the fence between the two!!! But after seeing this the Z100-400 is for me!! I shoot a lot of high school football 🏈 & 100-400 will be more flexible with Z 8!! Paired with the 70-200 on D850, I will have a winning combo!!

Both lenses are excellent but for me in a side by side the separation at f4.5 is significant v f5.6 (in ,y testing).

I really appreciate you doing this comparison. I had considered the Nikon Z 100-400mm, but have my order in for the Nikon Z 180-600mm f5-6.3 instead based on a comparison video I've seen that described the sharpness and autofocus differences between the Z 100-400mm and Z 180-600mm lenses to be marginal. For now, I'll keep my old Sigma 100-400mm f5-6.3 Contemporary for landscapes and occasional outdoor movement shots, but may upgrade for the Z 100-400mm when my pocketbook digests the purchase of the 180-600mm. Given that we both shoot dog show movement stills (you with performance, me-mostly conformation), the Z 100-400mm would probably be the more flexible lens for dog movement and better autofocusing than my Sigma. Right now the Z 70-200mm f2.8 S is my primary dog show lens for both my Z8 and Z9.

great use of t-shirts 🤘

Hi Sean, it could be very informative to through the Nikon 180-400mm f/4E VR TC into the comparison. It can be found used for £6,000 these days. Also for a third of the price the Nikon AF-S NIKKOR 200-400mm f/4G ED VR II.

Hello Sean, I must admit that I have the 100mm-400mm and was thinking is it worth me getting the 400mm, I did not think so. This now for my use case think thhe 100mm-400mm is more suited to the way I work. Good to see you back.

I agree the 400 is a smidge sharper looking at your shots. It's the one I'm thinking of getting to replace my f mount 200-400 but will I miss the flexibility? Decisions decisions!

Interesting, though prime lenses always use teleconverters better than zooms so maybe an extra incentive. But really the 180-600 does it all, apart from being a little slow

Thanks Sean. Great video and you echo my own sentiments. I have had the Z 100-400 sinceearly July 2022 in fact, the day I got it was trhe day Nikon announced the Z 400 f/4.5 prime. My initial reaction was "Bummer!!!" I bought too early and ended up with the wrong lens, however, I now have absolutely no regrets and felt, for me, the Z 100-400 is the better lens. So often i have had to make use of the flexibility the zoom offers. I am glad you highlighted the difference in the close focussing distances of the two lenses. The 100-400 makes a superb "pseudo" macro in my opinion, especially when coupled with the Z 1.4xTC. I made a video about this a few months back which you might find of interest - kzfaq.info/get/bejne/q897nZaY0NO6YX0.html Thanks again.