The magnification (or power) you will see through a given optical system depends on the telescope and the eyepiece. The simple formula is: Magnification = Focal length of telescope ÷ focal length of ...
Most consumer point and shoot digital cameras say something like, "5x optical zoom," or "9x optical zoom" on the box. But, when you move up to micro-4/3s and SLRs, you lose that. It makes sense - the ...
If you're new to optics, you might find that choosing among machine-vision lenses is a daunting task. But if you understand 10 key specifications, you can easily select the appropriate lens to ...
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