Although I don't know details of the 7 x 42 I have a very well used Opticron 8 x 42 high resolution marked field 6.3 degrees.
This is a beautiful Japan made binocular of high quality and completely surprised me as regards optical performance as I knew nothing about this binocular.
It was used for nature study and is unmarked optically.
It has I think been serviced probably more than once, the thin leather coating has been rubbed away in several places. The black paint is worn at the edges of the back plates
Everything is multicoated to high standards except the prisms which have high quality monocoats.
The view through it is lovely, a little edge softness, some pincushion distortion, rather narrow field and good stereo for me.
However, on this example the close focus is 35 feet for me and there is a lot of focusing beyond infinity.
it was either set up by someone who needed this focusing range or for someone who needed this.
As close focus is not important for me this is a wonderful binocular.
Many large binoculars such as Soviet 20 x 60s and others have close focus of about 80 feet from memory, some even more.
With normal porros this is inevitable. Internal focus allows much greater range but with optical complexity and more variable perormance.
This is a beautiful Japan made binocular of high quality and completely surprised me as regards optical performance as I knew nothing about this binocular.
It was used for nature study and is unmarked optically.
It has I think been serviced probably more than once, the thin leather coating has been rubbed away in several places. The black paint is worn at the edges of the back plates
Everything is multicoated to high standards except the prisms which have high quality monocoats.
The view through it is lovely, a little edge softness, some pincushion distortion, rather narrow field and good stereo for me.
However, on this example the close focus is 35 feet for me and there is a lot of focusing beyond infinity.
it was either set up by someone who needed this focusing range or for someone who needed this.
As close focus is not important for me this is a wonderful binocular.
Many large binoculars such as Soviet 20 x 60s and others have close focus of about 80 feet from memory, some even more.
With normal porros this is inevitable. Internal focus allows much greater range but with optical complexity and more variable perormance.
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