RE: [Leica] Binoculars - and lens coatings

["Kotsinadelis, Peter (Peter)" <peterk@lucent.com>]

Not sure about your coating on the lens or why it is alleged to happen most
in East German optics.
Perhaps age or weathering over the years.  Not sure.  But I am sure there
are others more familiar with East German optics than I.  

Peter K

- -----Original Message-----
From: D Khong [mailto:dkhong@pacific.net.sg]
Sent: Monday, April 12, 1999 11:39 PM
To: leica-users@mejac.palo-alto.ca.us
Subject: RE: [Leica] Binoculars - for Birding


At 08:54 AM 12/4/99 -0700, you wrote:
>If you are looking for some interesting binoculars you should check out
>http://www.deutscheoptik.com/  they have some great binoculars from
Germany,
>Japan, and elsewhere.
>
>Also, for the birders, I used to use a nice pair of 7 x 35 binocs but tried
>the new 10 x 36 Canon Image Stabilizer binoculars, wow was I hooked.  I
>actually had a 10x that I could handhold, excellent optics too!  They
aren't
>that much larger than the Geovids.
>
>Peter K

I have the 8x32, 10x42 Trinovids, the CZ jena 10x40 BGA and like them all.
The leicas are both great glass although the 10x tends to be heavier to lug
around for a long period of time.  

As for the Jena model,  I have noticed that some fine reticular pattern has
developed in one of the internal elements and only in one of two tubes.
This is definitely not fungus but some say that this is a coating
degradation which is quite common amongst E German products. Otherwise it
does not seem to affect optical performance (comparing the view by
eyeballing through each of the tubes).   Do you have an idea what is the
cause of this?  

Dan K.