sensitometer

简明释义

英[ˌsensɪˈtɒmɪtə]美[ˌsensəˈtɑmətər]

n. [摄] 感光计；[摄] 曝光表

英英释义

单词用法

同义词

反义词

例句

1.It may be useful for surface photometry on plates without sensitometer spots.

这种方法可以用于对没有感光斑点的底片作面光源测光。

2.It may be useful for surface photometry on plates without sensitometer spots.

这种方法可以用于对没有感光斑点的底片作面光源测光。

3.In the lab, we calibrated the sensitometer to ensure accurate readings.

在实验室，我们校准了感光度计以确保读数准确。

4.A sensitometer is essential for determining the exposure settings in photography.

在摄影中，感光度计对于确定曝光设置至关重要。

5.Using a sensitometer can help photographers choose the right film for their project.

使用感光度计可以帮助摄影师为他们的项目选择合适的胶卷。

6.The photographer used a sensitometer to measure the sensitivity of his film.

摄影师使用感光度计来测量他的胶卷的感光度。

7.The sensitometer showed that the new film was more sensitive than the old one.

感光度计显示新胶卷比旧胶卷更敏感。

作文

In the world of photography and film, the importance of accurate exposure cannot be overstated. Photographers and filmmakers rely on various tools to ensure that their images are captured with the right amount of light. One such essential tool is the sensitometer, a device used to measure the sensitivity of photographic materials to light. Understanding how a sensitometer works and its significance in the field of photography can greatly enhance the skills of both amateur and professional photographers.A sensitometer is designed to quantify the response of film or photographic paper to light exposure. It provides a standardized way to evaluate how different materials react when exposed to varying intensities of light. This measurement is crucial because it allows photographers to choose the right film or paper for their specific needs. For instance, a photographer working in low light conditions might prefer a film with higher sensitivity, while someone shooting in bright daylight may opt for a less sensitive option.The operation of a sensitometer typically involves exposing a strip of film or paper to controlled amounts of light. The device emits a series of exposures at different intensities, which creates a range of images on the film or paper. After the exposure process, the film is developed, and the resulting images are analyzed. By evaluating the density of the developed images, photographers can determine the film's speed, or ISO rating, which indicates its sensitivity to light.In addition to measuring sensitivity, a sensitometer can also help photographers understand the contrast characteristics of different films. Contrast refers to the difference in brightness between the lightest and darkest parts of an image. Knowing how a particular film responds to light can aid photographers in making informed decisions about their equipment and techniques. For example, if a photographer desires high contrast in their images, they might choose a film that demonstrates this quality when tested with a sensitometer.Moreover, the use of a sensitometer extends beyond just film photography. In the digital age, understanding the sensitivity of sensors in digital cameras has become increasingly important. While digital cameras do not use film, the principles of exposure and sensitivity remain relevant. Photographers can use the data obtained from a sensitometer to better understand how their digital sensors perform under different lighting conditions.The significance of using a sensitometer is evident in various applications. For example, in commercial photography, where consistency and quality are paramount, knowing the sensitivity of materials ensures that the final product meets professional standards. Similarly, in scientific photography, where accurate documentation is critical, a sensitometer can provide the necessary precision to capture reliable images.In conclusion, the sensitometer is a vital instrument in the realm of photography, offering insights into the sensitivity and contrast characteristics of photographic materials. By utilizing this device, photographers can make informed choices that enhance their work and ensure that they achieve the desired results. Whether one is a hobbyist or a seasoned professional, incorporating a sensitometer into their workflow can lead to improved understanding and mastery of the art of photography. With the right tools and knowledge, photographers can continue to push the boundaries of creativity and expression in their visual storytelling.

在摄影和电影的世界中，准确曝光的重要性不容小觑。摄影师和电影制作人依赖各种工具来确保他们的图像以正确的光线量捕捉。一个重要的工具就是sensitometer，一种用于测量摄影材料对光的敏感性的设备。理解sensitometer的工作原理及其在摄影领域的重要性，可以大大提升业余和专业摄影师的技能。sensitometer旨在量化胶卷或摄影纸对光照的反应。它提供了一种标准化的方法来评估不同材料在暴露于不同光强时的反应。这一测量至关重要，因为它使摄影师能够选择适合其特定需求的胶卷或纸张。例如，在低光条件下工作的摄影师可能更喜欢高敏感度的胶卷，而在明亮的阳光下拍摄的人可能会选择敏感度较低的选项。sensitometer的操作通常涉及将一条胶卷或纸张暴露于受控的光照量中。该设备发出一系列不同强度的曝光，从而在胶卷或纸上创建一系列图像。在曝光过程之后，胶卷被冲洗，得到的图像被分析。通过评估开发后图像的密度，摄影师可以确定胶卷的速度或ISO评级，这表示其对光的敏感性。除了测量敏感性，sensitometer还可以帮助摄影师理解不同胶卷的对比特性。对比度是指图像中最亮和最暗部分之间的亮度差异。了解特定胶卷对光的反应可以帮助摄影师做出关于他们设备和技术的明智决策。例如，如果摄影师希望图像具有高对比度，他们可能会选择在使用sensitometer测试时表现出这种特性的胶卷。此外，sensitometer的使用不仅限于胶卷摄影。在数字时代，了解数字相机传感器的敏感性变得越来越重要。虽然数字相机不使用胶卷，但曝光和敏感性的原则依然适用。摄影师可以利用从sensitometer获得的数据，更好地理解他们的数字传感器在不同光照条件下的表现。使用sensitometer的重要性在各种应用中显而易见。例如，在商业摄影中，一致性和质量至关重要，了解材料的敏感性确保最终产品符合专业标准。同样，在科学摄影中，准确的文档记录至关重要，sensitometer可以提供必要的精确度，以捕捉可靠的图像。总之，sensitometer是摄影领域的重要仪器，提供了对摄影材料的敏感性和对比特性的洞察。通过利用该设备，摄影师可以做出明智的选择，从而提升他们的工作并确保达到期望的结果。无论是爱好者还是经验丰富的专业人士，将sensitometer纳入他们的工作流程都能促进对摄影艺术的理解和掌握。凭借正确的工具和知识，摄影师可以继续推动创意和表达的界限，在视觉叙事中展现更多的可能性。