D800+Sigma 50-500mm OS DG HSM (BIGMOS)

This target is set up in good sunlight about 40 feet away, and the images are cropped.  The first is with the Sigma 50-500 OS, and the second with the Nikon 500mm f4 VR.

The lines remain separate down to between 2-3 in the green letters beneath in both.  However, the contrast is much better with the Nikon.  There is no doubt which is best.  But 2 days ago I walked 5 miles with the d800e and the Bigma, and it was not a big deal at age 77.  I had found it quite hard to do that carrying the Nikon.

Incidentally, both show some kind of moire, and this is not specific to the d800e.  I have used this chart on a d7000 and seen the same pattern.  I have not found out how to embed these image in the message - I used to do it in the old version of this site.

http://www.dpreview.com/galleries/5525799334/photos/2261353/121008n9276-55

http://www.dpreview.com/galleries/5525799334/photos/2261352/121008n9269-50

Here is the whole image with the Bigma, reduced to 20%.

http://www.dpreview.com/galleries/5525799334/photos/2263769/121008n9260-20percent

Off topic, here is a picture of a Purple Gallinule juvenile, taken with the Nikon 500mm f4 VR and d800e, followed by a crop.

http://www.dpreview.com/galleries/5525799334/photos/2255943/121005n8876

http://www.dpreview.com/galleries/5525799334/photos/2255944/121005n8876-2

--
www.pbase.com/bertramm pbase & dpreview supporter