Its in southeastern Ohio about 3 hours from my house. Its a eagle nest that's about 80 to 100 feet away and looking down into the nest.

I was there on April 9th thru Monday noon on April 12th and I shot 3,155 images. Attached are some of them.

That's not the tripod for that lens. I believe its a Gitzo 1227 or 1228, a very lightweight unit that can hold the 200-500 very nicely but not the heavy 600. To best use your 600 is with a Gimbal head and CF tripod. Check KEH for used CF tripods and Wimberly for a used WH-200.

You will NOT know what type of CPL was used. But you can tell if it was a cheap one. The image that comes from the camera depends on how good the lens and camera are as well as technique used. Whether a $50 or a $150 CPL you CANNOT see any optical difference. I use mine on 12mp, 24mp and 36.3mp cameras and there is NO difference in the CPL on any of those cameras.

The pink whale whale shot with about a $20.00 CPL. While the car shot was done with about a $40 to $50.00 CPL.

Here are two photos. Whale photo was shot with a cheap 72mm CPL. The car photo was shot with a 82mm CPL. Notice the pink/magenta of the whale photo. This is the tell all of cheap CPL's. You could buy a 82mm CPL for between $19.99 to $147.00. Notice in the car photo the CPL removed the glare off the window on the car.
But you should check on a sheet of white paper. If it shows pink send it back

Take a piece of white bond paper-set it on a counter and lay the CPL on the paper. If you see pink looking through the CPL send it back. This is one of the things that separates cheap from expensive.

A few osprey shots I got in 2013 using my D3/800mmF:5.6 Sigma

Here is my great nephew at bat. This were shot using my old D3 with an old SW 80~200Mm F:2.8D and a SB-910 strobe. I set the camera at 1/2000, shutter priority and I set the strobe to repeat. There is a MagMod on the strobe. Check out his concentration.

I bought the 77 x 82 step-up ring from Ebay so B&H lost this sale. I know where I can buy lenses and cameras and have to pay taxes. I'm retired so I use calendars anymore. What would someone do if they wanted to buy a D6 or D5 ? Have to wait a week? makes to sense. Adorama is in New York so they are probably closed also.

Well I've grown tired of dealing with B&H, seems like every time I want to make purchase they are closed for some reason. Passover is not a national holiday. I understand it is observed on a Sunday but why not be open on Monday? It make no sense.

What is Pesach?

I was looking for a 77 X 82 step-up ring for my 18mmF:2.8 and when I tried to pay it they said the were closed for some type of holiday. Well I opened google and asked if March 28th is a holiday and there is not one showing. So what gives? I went on ebay and bought one for about half of what B&H wanted.

Additionally I used D21 focus points, I always run at 14 Bit and use auto iso

I used a Nikon D600 with a 200~500mmG F:5.6 VR, I used shutter priority at 1/2500@5.6 with compensation set at minus 0.7