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Why does Nikon Micro-Nikkor 55mm f/3.5 pre-AI show 1:1 markings when it can only get to 1:2?

After doing some more research, I found out that indeed the markings tell the reproduction ratio that can be achieved when an extension ring is mounted along with the lens. From the lens manual: M2 ...
2 votes

Why does Nikon Micro-Nikkor 55mm f/3.5 pre-AI show 1:1 markings when it can only get to 1:2?

These are marks which tell you what magnification ratio you will get when focusing on object on this distance. For example 1:1 mean you will have the same size projection of object to the film or ...
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2 votes

Why doesn't my autofocus work in the optical viewfinder, but works in live view?

In DSLRs the autofocus is not done the same way between viewinder and liveview. When you use the viewfinder a small mirror ① behind the main mirror ② reflects some of the light on a focus sensor ③ at ...
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1 vote

Why does Nikon Micro-Nikkor 55mm f/3.5 pre-AI show 1:1 markings when it can only get to 1:2?

The blue markings indicate the reproduction ratio that will be yielded by the lens when used in combination with Nikon's PK-3 or PK-13 extension rings. Both of these extension rings add 27.5mm to the ...
1 vote

Why are my night sky photos coming out completely black?

Does anyone know what the problem might be? Focus If your lens is not focused almost precisely at infinity, the dim light from stars and other astronomical phenomena will be out of focus. The more ...
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