I have had one for a while now and I haven't finished up the review yet but here are a few of my thoughts on the Zeiss Field Scope:
It is a very nice scope. If you are planning on using it some resting on a pack, log etc, it is the easiest to use I have tried. On a tripod, the focus ring does have a couple of full turns from close to infinity and the focus ring is at the ocular lens end. Also by being at the far end it requires a bit more reach for focusing than a traditional design.
It is very sharp, focus and zoom are smooth but focus is a little touchy.
Eye relief is critical.
Lens caps are kind of bulky, I think I will replace the ocular with a snap cap or screw-in lens cap. It is quite long but does fit into a side pocket for the new Kifau UL packs.
In side by side comparisons with the Nikon 50 ED a couple weeks ago, I would likely opt for the Nikon.
