vignetting

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vignetting

 [vin-yet´ing]
the presence of a brighter light intensity at the center of the fluoroscopic image on an image intensifier than at the periphery of the field.

vignetting 

1. A graduated reduction in retinal illuminance due to light reaching the pupil at very oblique angles.
2. The difference in absorption between the two portions of photochromic fused bifocal lenses when the segment is not made of photochromic glass. See photochromic lens; retinal illuminance.
References in periodicals archive ?
In addition to Ethan Allen Hartsdale's #PowerOf10 Anniversary vignette, the Gala will also showcase Furniture Sharehouse's fabulous signature Designer Vignettes staged by prominent designers using donated one-of-a-kind furniture pieces and decorative accents as part of the evening's Silent Auction.
However, these findings should be interpreted with caution given the unexpected result that judgments were more severe in the positive group than in the control group, for the high severity vignette (4).
Interviews and conversations with the Ethnic Difference Study staff highlight that vignette creation is a multistep process that benefits from a multidisciplinary team's input to refine content and format.
Vignette is also the dam of Morning Charm, a North Light filly who won well on her debut at Newmarket in 2010.
There must be an acceptable ratio between the price paid for these short-term vignettes and for the yearly ones.
We propose that a researcher (or a research team) consider three stages in creating the vignette to be deployed in an SBRP experiment.
Second, a particular point must be established concerning vignette 1, (Perfectionism and fragmenting into multiple plans).
Selon le directeur de la communication de la DGI, Brahim Benali, le montant de la vente de vignettes automobiles se repartit entre les recettes des impots et les bureaux d'Algerie Poste.
Nineteen (18.4%) could identify the delusional aspect of the illness and said that the case in the vignette is suspicious while 14 (13.6%) patients could identify the symptom of hallucinations in the vignette and described the person in the case to be hearing unknown voices.
The greater or lesser detailing of a vignette should be consistent with the research problem.
Pour autant, les professionnels sont toujours confiants et affirment que la revue en hausse de la vignette n'aura pas un impact important sur l'evolution des ventes.
Pearson correlations assessed the relations between the distress scores and the number of facial expressions for each vignette. Post hoc analyses of pairwise comparisons were done with Fisher's least significant difference (LSD) and Tukey tests.