Thanks so much, I'm still working, so the only time I have to shoot is on weekends. I'll post some more in the Photo Gallery in the future.

You'll have to wait till DXO or Ken Rockwell does their test.

I liked my older one too, but I'm getting more keepers with this one.

(One more thing, You can't use the Nikon Teleconverters, They don't fit. Tamron made special ones for this lens.) I don't know about the other brands of teleconverters.

One more thing, You can't use the Nikon Teleconverters, They don't fit. Tamron made special ones for this lens.

It is about the same weight as the previous version or very close to the same weight-4.4lbs. It is lighter then the Sigma Sport-6.3 lbs and the Nikon 200-500-5.1lbs. I haven't used it on a tripod yet. I have a gimbal on my tripod, so it should dial in nicely like the previous version maybe a little better do to the improvements on the collar foot. I just tried it on my ball head and it works nicely. It is easy to hand hold.

I had the older version and traded it in for the new G2. It seems to be sharper, AF works better. More features like the addition VC mode 3, better coating, better weather seal, able to lock all focal lengths, larger foot on tripod collar with two mounting screw holes and a built in arca mount. It focuses closer then the old one and also closer then the two sigma versions, about 7 feet. I haven't been using it long, but I have notice a big difference in my images. See the attached shots.
The Heron photo is not cropped, the other two are. All hand held with VC on. Also you can fine tune this lens with the Tap device, being that it is an SP lens.

D7200 420mm f11 1/200sec ISO-320, NO CROP

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D7200 600mm f11 1/500sec ISO-640

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D7200 600mm f11 1/1000sec ISO-400

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I hope that is all it is. That would be an easy fix for Nikon. This is an early D750, less then 4 years old. I wouldn't think that foam would wear so quickly. It is being worked on now. I'll keep everyone posted.

I don't understand your issue with me calling out to the group about my camera, is an issue for you. I'm sure you don't want to hear anything negative about your D750. I think the D750 it is a great camera with some problems. Your reference to page 109 in the manual is to do with photo taking techniques. Your other reference to mirror size on a crop sensor compared to a full frame is moronic. Pentax has made 6x7 format slr camera for years with a mirror that is over twice the size of a full frame DSLR's mirror, using 120 film that was larger then Hasselblad's mirror due to the fact that the camera produced images that were in 8x10 ratio rather than Hasselblad's square format. That camera was very stable with little mirror shake. I would think that Nikon can make a full frame DSLR the has little mirror slap.

No, I have the latest firmware update. It didn't make a difference. I'll just have to wait until I get the camera back from Nikon. I'm hoping that they can fix it the first shot. They will warrantee the repair for 6 months. I'm willing to keep sending it back until the problem is solved. I have another camera body to use while it's gone.

They have been making SLR cameras for over 60 years, I would imagine they have the engineering figured out by this point. All I'm saying is that my D750 has shown to have extensive mirror slap. I have had Nikon cameras for many years. A Nikon F, a Nikkormat and may others. This is the worst I've had. Some cameras show more mirror slap then others.

I've noticed mirror slap on my D750. It happens on 1/30 or under, but occasionally happens on faster speeds. It is a vertical blur that you can see easily on 100% crop. It can be stopped by using Mirror Lock-up or Exposure Delay mode, which is essentially is the same, the camera locks up the mirror for 1, 2 or 3 seconds before it takes the shot. I was wondering if anyone else has had this issue.
I sent the camera back to Nikon for repair and I am waiting to see the result of their fix. The camera is out of warrantee at this point, so they charged me around $250 for the repair. I think it is a design flaw and they should have picked up the tab. Their latest firmware update addressed issues with mirror timing. This camera has been back to Nikon for the 2 recalls issued.
Attached are test images shot at 1/30 with a Nikon 70-200 on a tripod. I've repeated this test a number of times wth the same results. See attached photos. Zoom in and you'll see the vertical blur. I'll keep you posted.

No Exposure Delay

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3sec exposure delay

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I have the D750 and never noticed light streaks. My camera has been back to Nikon twice for the other recalls. I love the camera and it takes great images.
Just for grins, I would try using it in Mirror lock up or Exposure delay mode to see if it is a shutter issue. Definitely send it back to Nikon for repair.

I have D7200 and a D750 with no issues

One more thing- In case your planning to use the lens for wildlife only, I just want to show you the D7200 with the Tamron 150-600.

https://www.flickr.com/photos/129992705@N03/28628105916/in/datetaken/