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Message: <blockquote data-quote="OPTIC_NUT" data-source="post: 2948170" data-attributes="member: 121951">I think thaey are personalized, but there are patterns in the terms:Glare: seems to be used somewhat generically: you notice that nearby out-of-field light disturbs the view with extra light.   Glare can also be something bright actually in the field spilling over into       something dark next to it.  I have a ~25 yr old roof monocular where that happens.       Resolution is fine, but then it breaks down near sunny, contrasty situations.  This may happen       due to bits of dust in the ocular or inadequate coatings/dust on the prisms. Flare:  often mentioned as noticeable light streaks or flashes in or near the image     field.  The "ring-of-fire" effect at the edge, from lights or the sun,     a light-splash across a zone.Internal Reflections:  this is just some lack of internal absorption that is presumed to    aggravate the results things and diminish contrast.   Someone feels this is a     root cause or factor in those effects.Veiling:  mostly covers my main peeve. I call is 'hazing', but it's a widespread milky   light leakage that spoils proper contrast and color saturation in the image.   You could get it from off-axis sunlight, or in winter, from bright diffuse snow   light pouring into the objectives without being filter by an iris or flat black walls.Ghosting:  at least the eyepiece/telescope-derived term, can refer to reflections    inside the optics that cause you to see faint de-focused images of internal parts.Haze:   likely my term for "veiling":   diffuse milky background that spoils the contrast.Stray Light:   big general term for all confounding light types.</blockquote>

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