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This User’s Guide is a resource for investigators and stakeholders who develop and review observational comparative effectiveness research protocols. It explains how to (1) identify key considerations and best practices for research design; (2) build a protocol based on these standards and best practices; and (3) judge the adequacy and completeness of a protocol. Eleven chapters cover all aspects of research design, including: developing study objectives, defining and refining study questions, addressing the heterogeneity of treatment effect, characterizing exposure, selecting a comparator, defining and measuring outcomes, and identifying optimal data sources. Checklists of guidance and key considerations for protocols are provided at the end of each chapter. The User’s Guide was created by researchers affiliated with AHRQ’s Effective Health Care Program, particularly those who participated in AHRQ’s DEcIDE (Developing Evidence to Inform Decisions About Effectiveness) program. Chapters were subject to multiple internal and external independent reviews. More more information, please consult the Agency website: www.effectivehealthcare.ahrq.gov)
From a master of professional photography, a book that explores the exciting possibilities of artificial light. This guide to on- and off-camera flash picks up where Peterson's previous title, Understanding Exposure, left off--helping free photographers from the limitations of auto to get the images they want when natural light isn't enough. For the many amateur photographers afraid to venture past natural lighting, here is the book that will finally help them master artificial light. In his trademark easy-to-understand style, Bryan Peterson explains not only how flash works, but how to go beyond TTL automatic flash exposure to master manual flash, allowing readers to control the quality, shape and direction of light for a perfect exposure, every time.
Easy answers for your most common exposure questions Bryan Peterson’s Understanding Exposure has demystified the elements of exposure for nearly half a million readers, making it one of the most popular photography books in the world. Now, Bryan returns with his first-ever follow-up, Bryan Peterson’s Exposure Solutions, this time tackling 28 of the most common exposure stumbling blocks for amateur shooters. These are the exposure situations that prove frustrating time and time again, from exposing high-contrast scenes to freezing action in low light, photographing a full moon, exposing subjects against a sunset sky, balancing subjects in shade with brightly lit backgrounds, and so on. For each, Bryan points out common pitfalls and then offers a simple solution, showing you how to approach the exposure differently and transform your shot. A complement to Understanding Exposure, Bryan Peterson’s Exposure Solutions digs deeper to help you break bad habits, take control of your exposure, and approach even tricky situations with confidence.
Exposure Digital Field Guide, Borders Edition is a condensed e-book version of the printed book Exposure Digital Field Guide. It walks you through the basics of good exposure, achieved by adjusting ISO, aperture, and shutter speed in different combinations to create the perfect image. Then it shows you how to achieve perfectly exposed portraits, event and action shots, nature images, and nighttime photos.
As a mental health professional, it can be difficult to help anxious clients face their fears and anxieties. Exposure therapy is widely appreciated as one of the most effective therapeutic treatments for anxiety spectrum disorders; however, it is often underutilized due to problems that present themselves during treatment, such as client unwillingness or hesitancy, or a lack of understanding on the professional’s part regarding targeted applications. The Clinician's Guide to Exposure Therapies for Anxiety Spectrum Disorders offers guidance in creating specific exposure exercises for clients’ individual fears and phobias, as well as tools to help you and your clients overcome common roadblocks that arise during exposure therapy. In addition, this clinician’s guide presents detailed solutions and specific exposure strategies for the most common fears and phobias clients experience. You will learn to implement exposure therapy and integrate it with other evidence-based practices, such as cognitive behavioral therapy (CBT), dialectical behavior therapy (DBT), and acceptance and commitment therapy (ACT). The book also includes reproducible worksheets you can use to help clients develop hierarchies of exposure and information about using prolonged exposure therapy for post-traumatic stress disorder. If you are looking for a powerful resource for treating anxiety disorders, this is it.
Exposure. It’s essential to producing high-quality photographs, but mastering exposure is difficult. At last there’s a BetterPhoto guide to exposure, packed with BetterPhoto’s signature assignments, diagrams, tips, and illustrations. It’s like a full-scale photography course between the covers of the book–all taught the BetterPhoto way, just like photographers learn at the top photography-instruction site on the web. There’s plenty of information here on both digital and film photography, discussing how different file formats affect exposure, how to adjust digital files, color correction, combining digital exposures, and much more. The author’s stunning full-color photographs make this hardworking guide as inspiring as it is instructive.
This newly revised edition of Bryan Peterson's most popular book demystifies the complex concepts of exposure in photography, allowing readers to capture the images they want. Understanding Exposure has taught generations of photographers how to shoot the images they want by demystifying the complex concepts of exposure in photography. In this newly updated edition, veteran photographer Bryan Peterson explains the fundamentals of light, aperture, and shutter speed and how they interact with and influence one another. With an emphasis on finding the right exposure even in tricky situations, Understanding Exposure shows you how to get (or lose) sharpness and contrast in images, freeze action, and take the best meter readings, while also exploring filters, flash, and light. With all new images, as well as an expanded section on flash, tips for using colored gels, and advice on shooting star trails, this revised edition will clarify exposure for photographers of all levels.
In this exciting update to the first edition of Exposure: From Snapshots to Great Shots (9780321741295)—which has sold over 20,000 net units since its 2010 release—Jeff Revell fully refreshes the book to include new images and new techniques. Now that you've bought an amazing new DSLR, you need a book that goes beyond the camera manual to teach you how to take great shots, and that begins with understanding the fundamental principles of great photography. With Exposure: From Snapshots to Great Shots, popular photographer Jeff Revell starts with the basics of light, including how it works, and how to see it. In order to leverage this new understanding of light in your photography, Jeff walks the reader through one of the most important photographic principles—the exposure triangle: ISO, shutter speed, and aperture. Learning to apply these three elements together is the gateway to both technical and creative control of your photography. The book covers all key camera features that affect exposure (regardless of what type of DSLR you have) including Aperture Priority mode, Shutter Priority mode, and Exposure Compensation. Throughout the course of the book, the reader will gain an understanding of exposure for many different situations, such as taking portraits, action shots, landscapes, and more. Additionally, Jeff covers techniques that many DSLRs now have helpfully built into their hardware, such as panoramas, in-camera HDR, and even time-lapse photography. Beautifully illustrated with large, vibrant photos, this book teaches you how to take control of your photography to get the image you want every time you pick up the camera.
Choosing the exposure for a photograph is both alarmingly simple and infinitely complex; in fact, it's one of photography's most absorbing paradoxes. Exposure is at the very heart of photography. It has always been a subject of fascination to aspiring amateurs and professional photographers alike. Developments in digital technology have transformed the ways in which exposures can be manipulated, and this in turn has forced photographers to think about what they can achieve by understanding the variables of aperture, ISO, and time. In this book Michael Freeman takes you through this difficult and fast-moving area using unique workflow illustrations, histograms, and clear, visual examples to explore the subtleties of the subject and enable you to shoot with confidence. Divided into six sections - Fast-track & Foolproof, Technical, The Twelve, Style, Post-processing, and Reference - the book will provide you with the necessary instruction to get perfect exposure anywhere and with any subject matter.