query: Relationship between f-number and amount of light being let into the lens system
positive_passages.docid: 129613
positive_passages.text: Why does illuminance stay the same for a given f-stop even when focal length changes?
negative_passages.docid: 125473
negative_passages.text: Fresnel integral
negative_passages.docid: 96529
negative_passages.text: How can I calculate magnification ratio I get by reversing a lens?
negative_passages.docid: 149797
negative_passages.text: What determines the sharpness of a shadow?
negative_passages.docid: 34475
negative_passages.text: Spherical mirror ray diagram question
negative_passages.docid: 108074
negative_passages.text: Exact relationship between electric field and intensity
negative_passages.docid: 5000
negative_passages.text: Do smaller apertures provide more depth of field past the diffraction limit, even if peak sharpness suffers?
negative_passages.docid: 2349
negative_passages.text: Does white balance totally correct color shift due to lens glass or coating?
negative_passages.docid: 52691
negative_passages.text: Sign convention in optics
negative_passages.docid: 36041
negative_passages.text: Explanation of finite correction factor
negative_passages.docid: 158181
negative_passages.text: How does the lens diameter influence photo quality?
negative_passages.docid: 88401
negative_passages.text: How is the amplitude of light related to number of photons?
negative_passages.docid: 130201
negative_passages.text: Imaginary number for extinction coefficient in complex refractive index
negative_passages.docid: 41934
negative_passages.text: How do zoom, magnification, and focal length relate?
negative_passages.docid: 21523
negative_passages.text: How can aperture be f/11 on a lens with an aperture range designation of 3.5-5.6?
negative_passages.docid: 124074
negative_passages.text: Does stacking more lens filters decrease overall image quality?
negative_passages.docid: 98502
negative_passages.text: What is Snell's law's main formula?