Underwater Photography Jul/Aug 2015 Issue 85
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Macro References and Glossary Ofterms.Docx
Glossary of terms for Macro Photography Achromatic lens A lens that brings at least two wavelengths (typically red and blue) into focus in the same plane, thereby limiting the effects of chromatic and spherical aberration Airy disk and Airy pattern Descriptions of the best focused spot of light that a perfect lens with a circular aperture can make, limited by the diffraction of light Angle of view (AOV) The angular extent of a given scene that is imaged by a camera Aperture control filter An adapter that fits on the rear of a reversed lens to m anually control the aperture Astigmatism Light rays that propagate in two perpendicular planes have different foci Asymmetric lens A lens where the aperture appears to have different dimensions when viewed from the front and from the back Bellows A pleated light -tight ex ten sible part in a camera between the film plane and the lens Circle of confusion (CoC) The optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source (also known as a disk of confusion) Close focus distance See minimum focus distance Close -up lens A single or multi -element lens that fi ts on the filter t hread of a primary lens to increase magnification Close -up photography Images taken close to the subject typically with magnifications of ~0.1X to ~1X Coma or comatic aberration A lens aberration due to imperfections in a lens , or other components, that results in off-axis point sources appearing to have a tail (coma) similar to a comet Chromatic a berration (or An optical effect when a lens is unable to bring all wavelengths of colo ur to the same colour/purple fringing) focal plane, and/or when wavelengths of different colours are focused at different positions in the focal plane. -
Optical Performance:: Characterization of a Pupillometric Camera
RELATED TITLES Documents Science & Tech Tech Digital & Social Media 58 views 0 0 Abb Uploaded by Mabel Ruiz AP-Physical Low Light Manual Twilight Retrato Science Sample Photography for Render 1.4.5 Aberration document explaining the Seidel coefficients Full description Save Embed Share Print S-118.4250 PPOSTGRADUATE SEMINAR ON ILLUMINATION ENGINEERING ,, SSPRING 2008 LLIGHTING UUNIT,, DDEPARTMENT OF EELECTRONICS,, HHELSINKI UUNIVERSITY OF TTECHNOLOGY (TKK) OPTICAL PERFORMANCE:: CHARACTERIZATION OF A PUPILLOMETRIC CAMERA Petteri Teikari,, [email protected] Emmi Rautkylä,, emmi.rautkylä@tkk.fi RELATED TITLES Documents Science & Tech Tech Digital & Social Media 58 views 0 0 Abb Uploaded by Mabel Ruiz AP-Physical Low Light Manual Twilight Retrato Science Sample Photography for Render 1.4.5 Aberration document explaining the Seidel coefficients Full description Save Embed Share Print RELATED TITLES Documents Science & Tech Tech Digital & Social Media 58 views 0 0 Abb Uploaded by Mabel Ruiz AP-Physical Low Light Manual Twilight Retrato Science Sample Photography for Render 1.4.5 Aberration document explaining the Seidel coefficients Full description Save Embed Share Print TABLE OF CONTENTS A A BSTRACT .................................................................................................................................. TT ABLE OF CONTENTS ................................................................................................................2 11 IINTRODUCTION.................................................................................................................3 -
Scholar-Athletes Honored by NHIAA and NHADA by JOSHUA SPAULDING for the Arts in Concord
Prospect skiers win Div. III titles: See page B1. THURSDAY, FEBRUARY 21, 2013 COVERING ALTON, BARNSTEAD, & NEW DURHAM - WWW.NEWHAMPSHIRELAKESANDMOUNTAINS.COM FREE New Durham candidates have their say BY TIM CROES surplus that is left over every ceived his undergraduate de- has been working in the non- ue is being provided, ensur- Staff Writer and he said he would be run- year.He explained his plan to gree in chemistry and an profit industry concentrating ing that the town is being fis- NEW DURHAM — On ning as long as there is a need have office hours at the Town MBA with a concentration in on economic development cally responsible with its Tuesday, Feb. 12, a candi- to fill the position. Hall and talked about his finance. and helping small to medium money and working on strate- dates’ night was held at the “I want to run to serve the time as a musician. Swenson talked about his size businesses. gic vision. New Durham Fire Station, people of New Durham as Swenson is also running professional experience Swenson pointed to three Three candidates running with candidates for the many best I can by following the the position of selectmen and working at the international major concerns that he sees for school board in the Gov- different positions in town in concepts principles and tech- talked about his educational and domestic levels. the town is faced with. Mak- ernor Wentworth School Dis- attendance. niques of the essence of the background. Swenson re- For the past 10 years, he ing sure that the taxpayer val- SEE CANDIDATES, PAGE A9 The only contested race on law the problem-solving the town side is for the three- process.” Kroepel said. -
The Life -Boat. Journal
THE LIFE -BOAT. JOURNAL OF THE National %ffe*Soat Jnstitution, (ISSUED QTTABTEELY.) PMOK 3d. VOL. XYIL—No. 198.] IST NOVEMBER, 1900. [WITH WRECK CHART. SKETCH OF THE PEOGEESS MADE IN THE CONSTEUCTION OF COAST LIFE-BOATS. 1785-1900. No. 3. IN the last number of the Life-boat Norfolk and Suffolk Life-boats, came into Journal (August, 1900) this sketch was vogue in the early forties, and continues taken up to 1840, when the Liverpool to the present time. type of Life-boat came into use, and the The following describes the manner in improvements in that type were traced up which the above two competitors arranged to the present date. for carrying water-ballast in their Life- About December, 1841, there was a boats :— competition for Life-boat models held at Mr. George Farrow's model represented South Shields. As not much reference a North Country type Life-boat of the is to be found to this "competition," usual paddle-box boat form, 30 feet long it is probably right to assume that it by 10 feet beam, and 3£ feet depth, and was almost confined to the builders and for ballast she had a tank amidships- designers of the North Country type. 15 inches deep, 14 feet long, extending George Farrow, boatbuilder, South across the boat, capable of holding 3 tons Shields, and William Greener, of- Aston of water. This tank was divided by New Town, Birmingham, both appear to transverse partitions to prevent the water have sent models to this competition, ranging in a seaway, with limber holes and also to that for the Northumberland near the keel to keep up the communi- prize in 1850, showing, in each instance, cation, and others near the platform, in arrangements for carrying water-ballast case of the boat upsetting. -
Rhyming Dictionary
Merriam-Webster's Rhyming Dictionary Merriam-Webster, Incorporated Springfield, Massachusetts A GENUINE MERRIAM-WEBSTER The name Webster alone is no guarantee of excellence. It is used by a number of publishers and may serve mainly to mislead an unwary buyer. Merriam-Webster™ is the name you should look for when you consider the purchase of dictionaries or other fine reference books. It carries the reputation of a company that has been publishing since 1831 and is your assurance of quality and authority. Copyright © 2002 by Merriam-Webster, Incorporated Library of Congress Cataloging-in-Publication Data Merriam-Webster's rhyming dictionary, p. cm. ISBN 0-87779-632-7 1. English language-Rhyme-Dictionaries. I. Title: Rhyming dictionary. II. Merriam-Webster, Inc. PE1519 .M47 2002 423'.l-dc21 2001052192 All rights reserved. No part of this book covered by the copyrights hereon may be reproduced or copied in any form or by any means—graphic, electronic, or mechanical, including photocopying, taping, or information storage and retrieval systems—without written permission of the publisher. Printed and bound in the United States of America 234RRD/H05040302 Explanatory Notes MERRIAM-WEBSTER's RHYMING DICTIONARY is a listing of words grouped according to the way they rhyme. The words are drawn from Merriam- Webster's Collegiate Dictionary. Though many uncommon words can be found here, many highly technical or obscure words have been omitted, as have words whose only meanings are vulgar or offensive. Rhyming sound Words in this book are gathered into entries on the basis of their rhyming sound. The rhyming sound is the last part of the word, from the vowel sound in the last stressed syllable to the end of the word. -
Orbs in Pictures of the Sun
Orbs in pictures of the sun Continue The backscatter of the camera's flash of motes of dust causes unfocused orb-shaped photographic artifacts. In photography, the backscatter (also called near-camera reflection[1]) is an optical phenomenon that results in typically circular artifacts on an image, due to the camera's flash reflected from unfocused motes of dust, water droplets, or other particles in the air or water. It is especially common with modern compact and ultra-compact digital cameras. [3] [3] A hypothetical underwater instance with two conditions in which circular photographic artifacts are probable (A) and unlikely (B), depending on whether the aspect of particles facing the lens directly reflects the flash, as shown. Elements do not appear to scale. Caused by the backscatter of light of unfocused particles, these artifacts are also sometimes referred to as orbs, citing a common paranormal claim. Some appear with tracks, suggesting movement. [4] Cause circular unfocused visual artifacts caused by raindrops. Additional information: Light scattering of particles and Defocus-aberration Backscatter usually occurs in low light scenes when the camera flash is used. Cases include night time and underwater photography, when a bright light source and reflective unfocused particles are close to the camera. [1] Light appears much brighter much near the source due to the inverse-square law, which says light intensity is inversely proportional to the square of the distance from the source. [5] The artifact may be the result of backscatter or retroreflection of the light from airborne solid particles, such as dust or pollen, or liquid droplets, especially rain or fog. -
ROYAL NAVY LOSS LIST COMPLETE DATABASE LASTUPDATED - 24NOVEMBER 2015 Royal Navy Loss List Complete Database Page 2 of 209
ROYAL NAVY LOSS LIST COMPLETE DATABASE LAST UPDATED - 24 NOVEMBER 2015 Photo: Swash Channel wreck courtesy of Bournemouth University MAST is a company limited by guarantee, registered in England and Wales, number 07455580 and charity number 1140497 | www.thisismast.org | [email protected] Royal Navy Loss List complete database Page 2 of 209 The Royal Navy (RN) Loss List (LL), from 1512-1947, is compiled from the volumes MAST hopes this will be a powerful research tool, amassing for the first time all RN and websites listed below from the earliest known RN wreck. The accuracy is only as losses in one place. It realises that there will be gaps and would gratefully receive good as these sources which have been thoroughly transcribed and cross-checked. any comments. Equally if researchers have details on any RN ships that are not There will be inevitable transcription errors. The LL includes minimal detail on the listed, or further information to add to the list on any already listed, please contact loss (ie. manner of loss except on the rare occasion that a specific position is known; MAST at [email protected]. MAST also asks that if this resource is used in any also noted is manner of loss, if known ie. if burnt, scuttled, foundered etc.). In most publication and public talk, that it is acknowledged. cases it is unclear from the sources whether the ship was lost in the territorial waters of the country in question, in the EEZ or in international waters. In many cases ships Donations are lost in channels between two countries, eg. -
Contrasting Patterns of Population Structure and Gene Flow Facilitate
OPEN Heredity (2017) 119, 35–48 Official journal of the Genetics Society www.nature.com/hdy ORIGINAL ARTICLE Contrasting patterns of population structure and gene flow facilitate exploration of connectivity in two widely distributed temperate octocorals LP Holland1, TL Jenkins1 and JR Stevens Connectivity is an important component of metapopulation dynamics in marine systems and can influence population persistence, migration rates and conservation decisions associated with Marine Protected Areas (MPAs). In this study, we compared the genetic diversity, gene flow and population structure of two octocoral species, Eunicella verrucosa and Alcyonium digitatum, in the northeast Atlantic (ranging from the northwest of Ireland and the southern North Sea, to southern Portugal), using two panels of 13 and 8 microsatellite loci, respectively. Our results identified regional genetic structure in E. verrucosa partitioned between populations from southern Portugal, northwest Ireland and Britain/France; subsequent hierarchical analysis of population structure also indicated reduced gene flow between southwest Britain and northwest France. However, over a similar geographical area, A. digitatum showed little evidence of population structure, suggesting high gene flow and/or a large effective population size; indeed, the only significant genetic differentiation detected in A. digitatum occurred between North Sea samples and those from the English Channel/northeast Atlantic. In both species the vast majority of gene flow originated from sample sites within regions, with populations in southwest Britain being the predominant source of contemporary exogenous genetic variants for the populations studied. Overall, historical patterns of gene flow appeared more complex, though again southwest Britain appeared to be an important source of genetic variation for both species. -
The Manacles Marine Conservation Zone (MCZ) Characterisation Report 2015
The Manacles Marine Conservation Zone (MCZ) Characterisation Report 2015 MPA Monitoring Programme Contract Reference: MB0129 Report Number: 2 Version 4 August 2018 © Crown Copyright 2018 Project Title: Marine Protected Areas (MPA) Monitoring Programme Report No 2. Title: The Manacles MCZ Characterisation Report 2015 Defra Project Code: MB0129 Defra Contract Manager: Carole Kelly Funded by: Department for Environment, Food and Rural Affairs (Defra) Marine Science and Evidence Unit Marine Directorate Nobel House 17 Smith Square London SW1P 3JR Authorship Anna Downie Centre for Environment, Fisheries and Aquaculture Science (Cefas) [email protected] Jacqueline Eggleton Centre for Environment, Fisheries and Aquaculture Science (Cefas) [email protected] Paul McIlwaine Centre for Environment, Fisheries and Aquaculture Science (Cefas) [email protected] Ross Bullimore Centre for Environment, Fisheries and Aquaculture Science (Cefas) [email protected] Acknowledgements We thank the Marine Protected Areas Group (MPAG) representatives for reviewing earlier drafts of this report. Disclaimer: The content of this report does not necessarily reflect the views of Defra, nor is Defra liable for the accuracy of information provided, or responsible for any use of the reports content. Although the data provided in this report have been quality assured, the final products - e.g. habitat maps – may be subject to revision following any further data provision or once they have been used in Statutory Nature Conservation Body -
The Essential A-Z of Photography Slang Artifact a Loose Term To
The essential A-Z of photography slang Artifact A loose term to describe an element that degrades picture quality. Anything from the blockiness that can occur when pictures are heavily compressed as JPEGs, to the distortion to pictures that occurs with heavy manipulation – even the effect you see with lens flare. ATGNI All The Gear, No Idea. A photographer who has lots of camera equipment but doesn’t know what half of it does. A bit of an Uncle Bob, in fact. BIF A rare acronym that you’ll only see floating around bird photography forums (download our free bird photography cheat sheet). There’s a clue right there: BIF stands for Bird in Flight, and is usually brought up during lengthy technical discussions about autofocus point selection and focus modes. Bigma The Sigma 50-500mm f/4-6.3 lens earned the nickname ‘Bigma’ thanks to its considerable 10x zoom range and considerable proportions. Blown out Bright areas in a photo that are overexposed are said to be blown out. They won’t hold any detail and will be bleached white. Bokeh Pronounced ‘boh-kay’, this term is derived from the Japanese word for ‘blur’ and is used to describe the aesthetic quality of the blur in out- of-focus areas of a picture. The faster the lens, and the more aperture blades it has, the smoother the blur tends to be. Chimping The act of looking at pictures on the back of the camera as soon as you’ve taken them, usually accompanied by lots of ‘ooh-ooh-oohing’, hence the name. -
Assessing the Genetic Connectivity of Two Octocoral Species in the Northeast Atlantic
Natural England Commissioned Report NECR152 Assessing the genetic connectivity of two octocoral species in the Northeast Atlantic First published 16 June 2014 www.naturalengland.org.uk Foreword Natural England commission a range of reports from external contractors to provide evidence and advice to assist us in delivering our duties. The views in this report are those of the authors and do not necessarily represent those of Natural England. Background Understanding patterns of connectivity for Eunicella verrucosa is a threatened, IUCN red- species of conservation concern is crucial in the listed sea fan and is recognised as a species of design of networks of ecologically coherent principal importance in English waters. Marine Protected Areas (MPAs) and connectivity is one of a number of principles It has been specifically identified for protection considered in the design of such a network within a UK MPA network. currently being enacted by the UK Governments. However, data concerning Alcyonium digitatum is a soft coral and a connectivity are deficient for many invertebrate common on rocky reefs and on a broad range of sessile taxa. This study was commissioned to subtidal rock habitats. As such it will be assess the population genetic structure and represented in the UK MPA network. genetic connectivity of two temperate octocoral species around southwest Britain and the North The findings of this work have been, and will East Atlantic Eunicella verrucosa and Alcyonium continue to be, used to help design and deliver digitatum. the UK marine -
NW Europe Standard Nautical Charts and Leisure Products Catalogue 2020 Tek Marine Ltd
A selection of UK & Republic of Ireland DISTRIBUTORS: Supplying Standard Paper Nautical ADMIRALTY Charts and Publications (P) and digital products (D) and have print on demand (POD) capability. ADMIRALTY Location Distributor Telephone Website Type Leisure Folios Aberdeen Global Navigation Solutions Ltd. +44 (0)1224 595 045 www.gnsworldwide.com P, D & POD Aberdeen Nautisk + 44 (0)1224 959850 www.nautisk.com P, D & POD ADMIRALTY Leisure produces a range of leisure Aberdeen PiSys Marine Ltd. +44 (0)1651 277 000 www.pisysmarine.com D folios specifi cally designed for the leisure user. Bangor Todd Navigation +44 (0)2891 466 640 www.toddchart.com P, D & POD Bristol Nautisk +44 (0)1454 617 636 www.nautisk.com P, D & POD SC5616 Buckie Poseidon Navigation Services Ltd. +44 (0)1542 841 245 www.poseidonnavigation.com P, D & POD Chichester Da Gama Maritime Ltd. +44 (0)1243 511 084 www.dgmaritime.com P, D & POD Enfield ChartCo Ltd. +44 (0)1992 805 400 www.chartco.com P, D & POD SC5617 Fareham Euronav Ltd. +44 (0)2392 373 855 www.euronav.co.uk D Grimsby South Bank Marine Charts Ltd. +44 (0)1472 361 137 www.southbankmarine.com P, D & POD Hull B. Cooke & Son Ltd. +44 (0)1482 223 454 www.bcookeandson.co.uk P, D & POD Ivybridge PC Maritime Ltd. +44 (0)1752 254 205 www.pcmaritime.com D London Stanfords Maritime Books and Charts +44 (0)207 759 7150 www.stanfords.com P, D & POD Charity & Taylor Lowestoft +44 (0)1502 573943 www.charityandtaylor.com P, D & POD (Charts & Publications) Ltd.