center focus control question (1 Viewer)

Just wondering, when we adjust the central and then the right eyepiece relative to the left eyepiece already, can we just lock it and forget about it.

For instance, if we adjust perfectly in the daytime, will we need to readjust at night again?

If it is working properly, once you set the diopter adjustment for your right eye you should not have to change it again whether it is daylight or nighttime. However, you will have to change the center focus whenever the distance to the object you are looking at changes.
Bob

baofeng said:

Just wondering, when we adjust the central and then the right eyepiece relative to the left eyepiece already, can we just lock it and forget about it.

For instance, if we adjust perfectly in the daytime, will we need to readjust at night again?

Click to expand...

There could be some people that might have to readjust the right diopter at night if they suffer from Nocturnal Myopia or if one of you eyes vision changes for some reason such as age or disease in the eye.
"Nocturnal myopia, also known as night myopia or twilight myopia, is a condition in which the eye has a greater difficulty seeing in low illumination areas, even though its daytime vision is normal. Essentially, the eye's far point of an individual's focus varies with the level of light. Night myopia is believed to be caused by pupils dilating to let more light in, which adds aberrations resulting in becoming more nearsighted. A stronger prescription for myopic night drivers is often needed. Younger people are more likely to be affected by night myopia than the elderly"

That is a useful fact Dennis. I had never heard of it before.:t:
Bob