Funny, I just wrote up my experience with the Zf as a back-up body on the FM forum... I'm pasting a copy of my post here.
Before I paste the post, I want to offer a backstory. One month ago I was using a Z9/Z8/Z6II w/ 24-120, 180-600, 400 f4.5, 800PF. The opportunity to buy my dream lens... the Z 400mm f2.8S appeared, so I sold the Z8, 400 f4.5, and 800PF. I wish this equaled my lens, but I also through a fair amount of money into the deal. This left me with a Z9/Z6II combo platter and I was using the Z9 with the 400 f2.8S and Z6II with the 180-600. At Bosque del Apache, I became frustrated with the AF limitations on the Z6II... enter my decision to sell that and buy the Zf... FM... comments to follow:
I live in the world of the polar vortex and the sub-arctic air has settled on my home range. This morning it was -6 degF (-21C), and if you include the wind, it was a balmy -20 degF (-29 degC +/-). My wildlife subjects are cold just like their photographer. Finding wildlife is a challenge and sitting with them on an icy lake is equally difficult. In the end, I managed to make only two keepers (see below). The shots were taken with the Nikon Zf. In general, I plan to use the 180-600 with the Zf and my 400 f/2.8S with the Z9.
I've been adding my thoughts to the Zf discussion as well as one related to using a Zf w/ a 600PF. For those of you looking for a second body, I'd argue that this is your best option after the Z9/Z8. Please note, the Zf is not without its faults... in fact, I'd argue that ergonomically, it's not the better than the Z6/Z7 series, but the AF and viewfinder refresh rate is worth the ergonomic limitations. Of course, if you're a street photographer using manual focus lenses, the Zf is the right camera. For a nature shooter like me, I ignore the "old school" dials and programed the two comman dials to match my Z9. I've set the AEL button on the back to back-button focus, and programmed the one function button to change my AF patch to single point AF.
Finding the command dials with gloves is a little tricky, but this did not prevent me from controlling the camera as I intended. While I wish there was an additonal dedicated back-button focus button, I am making due. The real benefit of the Zf is the AF. The AF is responsive and behaves like my Z9. I shot for about an hour in the cold, and the battery held up just fine. I probably could get 4 hours out of a battery in that weather... I think that's better than what I could do with the Z6. Finally, in addition to the problems of shooting a white bird with a tiny black eye over water on a frigid morning, there was river mist. The AF behaved way better than expected...
Sample picks added.
bruce
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