[Dennis]

Originally Posted by dugnsuz

Is that the 400mm 5.6L? How do you find that for astro work?
Cheers all

Hi Doug

I’ve just found the old post and my apologies, it was only a test of the x2 (not x1.4 as well) with the 400mm F5.6L, versus up-sampling x2 in CS3.

Here is the link to the test image.

Here is the link to another star field test of the 400mm. It is a superb lens.

Cheers

Dennis