This is my first post in Birdforum, so hello!
My recently purchased Nippon Kogaku (Nikon) Novar 7x50s arrived in the mail yesterday. I have a pair of 7x35 Mikrons arriving hopefully next week
When I pulled them out of their case, the right ocular was badly loose, like it was in place but wouldn't focus. A quick check unscrewing the eyepiece plastic revealed the set screws, and with a little bit of examination and testing I was able to get them to match fairly close at minimum distance focus. Left ocular was fine.
It was thankfully fungus free, and I was surprised at how eye-popping sharp and bright the image was when both sides matched up in focus well. Eye relief seemed adequate (with the plastic eyepieces) with wearing glasses despite the tiny ocular lenses. It took a little getting used to holding the 'nocs in a way that I could focus with both hands. And at 1 kilo they're not light...
My question is twofold...
How do I ensure both sides are correctly set for minimum/maximum focus? When I set the focus to the opposite end and try to focus on clouds, the pictures are blurry. It seems like I can focus clearly down to around 20 feet/6-7 yards as a rough estimate.
There are diopter markings on both sides - how do I know if this is a factor in how they focus (or, how are the diopter settings supposed to work?) Is this why it's blurry when "set" to infinity?
I was able to obtain the excel file via wayback machine that Hans Braakhuis maintained up to around 2015, and I was able to pin down this is a 1950 model, but is there any way to know/test minimum focus or eye relief just to know the number?
Any insights are greatly appreciated!
~S
My recently purchased Nippon Kogaku (Nikon) Novar 7x50s arrived in the mail yesterday. I have a pair of 7x35 Mikrons arriving hopefully next week
When I pulled them out of their case, the right ocular was badly loose, like it was in place but wouldn't focus. A quick check unscrewing the eyepiece plastic revealed the set screws, and with a little bit of examination and testing I was able to get them to match fairly close at minimum distance focus. Left ocular was fine.
It was thankfully fungus free, and I was surprised at how eye-popping sharp and bright the image was when both sides matched up in focus well. Eye relief seemed adequate (with the plastic eyepieces) with wearing glasses despite the tiny ocular lenses. It took a little getting used to holding the 'nocs in a way that I could focus with both hands. And at 1 kilo they're not light...
My question is twofold...
How do I ensure both sides are correctly set for minimum/maximum focus? When I set the focus to the opposite end and try to focus on clouds, the pictures are blurry. It seems like I can focus clearly down to around 20 feet/6-7 yards as a rough estimate.
There are diopter markings on both sides - how do I know if this is a factor in how they focus (or, how are the diopter settings supposed to work?) Is this why it's blurry when "set" to infinity?
I was able to obtain the excel file via wayback machine that Hans Braakhuis maintained up to around 2015, and I was able to pin down this is a 1950 model, but is there any way to know/test minimum focus or eye relief just to know the number?
Any insights are greatly appreciated!
~S