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Docter (ex-Zeiss) Classic porros
On the page just referenced by John, Holger states that the Classic line were discontinued "around 1994". The 8x30 sounds interesting, with a field of 150m, quite close to E II. They had a 30-year warranty... -
Docter (ex-Zeiss) Classic porros
I didn't know Docter had made these at all, and will follow with interest. I wonder whether the tooling still exists to resurrect any of them... -
Docter (ex-Zeiss) Classic porros
One further detail I recall: Nobilems have cemented prisms, so it's possible that aging balsam may also have affected the view in old enough models, but that too should have been improved. These are not birding bins, so Cloudy Nights may be a better source of information. Or you could ask... -
Docter (ex-Zeiss) Classic porros
No direct experience myself, but the only line Docter continued is Nobilem, in 7x50, 8x56, 10x50, 15x60. Others may also have appeared just before that under the "aus Jena" brand. I looked into them once but they all seem quite hard to find. Improvement would be in coatings, and I believe...