sensitometry

简明释义

英[sensɪˈtɒmɪtri]美[sensəˈtɑːmətri]

n. [摄] 感光测定，感光度测定法；[摄] 感光学

英英释义

单词用法

同义词

反义词

例句

1.This paper mainly discusses the sensitometry and chemical analysis routine work in motion picture film processing.

本文主要叙述以下二个题目，即感光测定和化学分析。

2.In sensitometry, the characteristic values of sensitivity and contrast coefficient are generally, obtained from photographic characteristic curve graphically.

在感光测定中，一般都用图解的方法从感光特性曲线上求出感光度、反差系数等特性数值。

3.In sensitometry, the characteristic values of sensitivity and contrast coefficient are generally, obtained from photographic characteristic curve graphically.

在感光测定中，一般都用图解的方法从感光特性曲线上求出感光度、反差系数等特性数值。

4.Understanding sensitometry helps photographers choose the right film for their projects.

理解敏感度测量学可以帮助摄影师为他们的项目选择合适的胶卷。

5.In the lab, we use sensitometry to evaluate the performance of different film types.

在实验室中，我们使用敏感度测量学来评估不同胶卷类型的性能。

6.The sensitometry of a film determines its exposure latitude.

胶卷的敏感度测量学决定了它的曝光宽容度。

7.The study of sensitometry is crucial for understanding how photographic films respond to light.

对敏感度测量学的研究对于理解摄影胶卷如何对光作出反应至关重要。

8.The principles of sensitometry are applied in both traditional and digital photography.

在传统和数字摄影中都应用了敏感度测量学的原理。

作文

In the realm of photography and imaging, the concept of sensitometry plays a crucial role in understanding how different materials respond to light. Sensitometry is defined as the study of the sensitivity of photographic materials, which includes film, paper, and digital sensors. This field focuses on measuring the response of these materials to varying intensities of light, thereby allowing photographers and scientists to optimize their techniques and equipment for the best possible outcomes.The origins of sensitometry can be traced back to the early days of photography when pioneers sought to understand how different chemicals reacted to light exposure. Over time, this knowledge evolved into a systematic approach to measuring the light sensitivity of various photographic materials. By employing standardized tests, researchers can create sensitometric curves that illustrate how a material responds to light over a range of exposures.One of the key components of sensitometry is the use of characteristic curves, which graphically represent the relationship between exposure and density. The x-axis typically represents the logarithm of the exposure, while the y-axis indicates the resulting density of the image. These curves help photographers understand the dynamic range of their materials, which is essential for achieving the desired contrast and tonal range in their images.For instance, a steep characteristic curve indicates that a material has high contrast, meaning it can capture a wide range of tones from shadows to highlights. Conversely, a flat curve suggests low contrast, where the differences between tones are minimal. Understanding these characteristics allows photographers to choose the right materials for their specific needs, whether they are aiming for high contrast black-and-white images or subtle color photographs.Moreover, sensitometry is not limited to traditional film photography; it also extends to digital imaging. Digital sensors have their own sensitivity characteristics, and understanding these through sensitometry can significantly enhance the quality of digital photographs. By analyzing the response of digital sensors to light, photographers can make informed decisions about exposure settings and post-processing techniques.In practical applications, sensitometry aids in the development of film and printing processes, ensuring that photographers achieve consistent results. For example, when developing black-and-white film, knowing the sensitivity of the film allows for precise control over the development time and temperature, ultimately influencing the final image quality. Similarly, in color photography, understanding the sensitivity of different layers of emulsion can lead to better color balance and saturation.Additionally, sensitometry has implications beyond artistic photography; it is also vital in scientific fields such as medical imaging and remote sensing. In these areas, the ability to accurately measure and analyze the sensitivity of imaging systems can lead to improved diagnostic tools and enhanced data collection methods.In conclusion, sensitometry is an essential aspect of photography and imaging that enables practitioners to understand and manipulate the sensitivity of photographic materials. By studying the relationship between exposure and density, photographers can make informed choices about their materials and techniques, leading to better image quality and more successful outcomes. Whether in traditional film photography or modern digital imaging, the principles of sensitometry remain fundamental to the art and science of capturing light.

在摄影和成像领域，sensitometry（感光度测量法）的概念在理解不同材料如何对光作出反应方面发挥着至关重要的作用。Sensitometry被定义为对摄影材料敏感性的研究，包括胶卷、纸张和数字传感器。该领域专注于测量这些材料对不同光强度的响应，从而使摄影师和科学家能够优化他们的技术和设备，以获得最佳结果。Sensitometry的起源可以追溯到摄影早期，当时的先驱者试图理解不同化学物质对光照的反应。随着时间的推移，这些知识演变为一种系统化的方法，用于测量各种摄影材料的光敏感性。通过采用标准化测试，研究人员可以创建敏感曲线，展示材料在不同曝光下对光的响应。Sensitometry的一个关键组成部分是特征曲线，它以图形方式表示曝光与密度之间的关系。x轴通常表示曝光的对数，而y轴则表示图像的最终密度。这些曲线帮助摄影师了解其材料的动态范围，这对于实现所需的对比度和色调范围至关重要。例如，陡峭的特征曲线表明材料具有高对比度，意味着它可以捕捉从阴影到高光的广泛色调。相反，平坦的曲线则表明低对比度，其中色调之间的差异最小。理解这些特性使摄影师能够选择适合其特定需求的材料，无论他们是追求高对比度的黑白图像还是细腻的彩色照片。此外，sensitometry并不仅限于传统胶卷摄影；它也扩展到数字成像。数字传感器有其自身的敏感性特征，通过sensitometry理解这些特征可以显著提高数字照片的质量。通过分析数字传感器对光的响应，摄影师可以就曝光设置和后期处理技术做出明智的决定。在实际应用中，sensitometry有助于胶卷和打印过程的发展，确保摄影师获得一致的结果。例如，在冲洗黑白胶卷时，了解胶卷的敏感性可以精确控制显影时间和温度，最终影响最终图像的质量。类似地，在彩色摄影中，理解不同乳剂层的敏感性可以导致更好的色彩平衡和饱和度。此外，sensitometry在医学成像和遥感等科学领域也具有重要意义。在这些领域，准确测量和分析成像系统的敏感性的能力可以改善诊断工具和增强数据收集方法。总之，sensitometry是摄影和成像的重要方面，使从业者能够理解和操控摄影材料的敏感性。通过研究曝光与密度之间的关系，摄影师可以对其材料和技术做出明智的选择，从而提高图像质量和成功率。无论是在传统胶卷摄影还是现代数字成像中，sensitometry的原则仍然是捕捉光线艺术和科学的基础。