Tamron 150-600 vs. Nikkor 200-400

Testrun of the Tamron vs. Nikkor 200-400. To get comparable focal length I used the 1.7 converter on the Nikkor and set it to 350mm. Both use open aperture which results in 6.3 on the Tamron and 6.7 on the Nikkor. Situation is in the shadows, early morning hours. Therefore both cameras where using ISO 1600 for the shots. This is not a scientific comparison but real shooting situation having the birds in a similar place and situation. Sets showing

1. worked out final result without any noise reduction
2. only raw conversion, no further processing
3. cropped to show only the bird from processed picture
4. same crops as in #3 but full size

First set: Tamron on D800 / D3 on Nikkor / D800 on Nikkor / D3 on Tamron

Second Set: Tamron on D800 / D3 on Nikkor / D800 on Nikkor / D3 on Tamron

Third set: Tamron on D800 / D3 on Nikkor / D800 on Nikkor / D3 on Tamron

Fourth Set: D3 Nikkor / D3 Tamron /  D800 Nikkor / D800 Tamron

Not bad for the Nikkor. The Tamron does a good job but cannot really replace the Nikkor in full. Hope I will get the Sigma 150-600 soon. I assume this will beat them both when 200-400 uses a converter.