No worries about the drop in mp. The big thing for me was the camera size when using large lenses. I thought no big deal but it kind of was. I was able to sell mine and picked up a used D850 for only $150 more than I sold my D4. So much easier carry all day.
Great lens, I had the f3.5 version and was always pleased. Light weight and sharp. That said I picked up a Ziess Marko-Planar 100mm f2. That on my d850 is magical.
The thing that bothers me is no support for D series lenses, only g series. That will be the hurtle for a lot of Nikon users. We do not all use g lenses.
Michael,
Thanks for this post. I had this happen on my d4 only when using my Nikon 85mm f1.8g lens. In my case I bent the lever in the camera box forward a bit. No more dark viewfinder.
I can tell you now that you'll appreciate the extra working distance from the 180mm, but I'd buy the less expensive of the two. I just picked up the Tamron 180mm non OS and really like it. I also have the Tamron 90mm VC lens.
I don't own either, but do own the Nikon 105mm f2 DC. From a build stand point I'd buy the sigma. And the image quality is great plus it cost less than the Nikon version.
The D8xx series camera are geared towards landscape/portrait type work, that said they can do so much more due to the high pixel count. If you want to venture into either then I'd say buy one. If you want a great portrait camera then look at a D700, only 12mp but love the colors. HTH.
<p>A few from this past Fathers day. It was 99 degree at dusk, it was hot but I had a blast. Shot with my Nikon D800 & Nikon 35mm f1.8 FX.</p> <p><img src="https://photos.smugmug.com/Nikon-35mm-f18-FX/i-b4q5M9K/0/M/192-M.jpg" alt="" width="600" height="401" /><br> <BR> <BR> <img src="https://photos.smugmug.com/Nikon-35mm-f18-FX/i-pnkBK5R/0/M/165-M.jpg" alt="" width="300" height="450" /></p>