Zoom Lens Resolution Testing Calculations

A zoom lens fills the gap between the camera and the object. The magnification of the lens doesn't mean better quality photos, but you can determine the quality the lens brings by testing its resolution.

Testing the lens requires specific lens test charts, preferably on a white background, and a tripod. "Do you need to discover digital photography solutions that deliver experienced photographers to where they are today? Well, The Top Secret Photography Techniques would likely guide you out in doing so. To find stunning pictures we primary need to have to look at some fundamental photography methods. The primary one I am able to share with you is find out about light. You can come across every little thing about photography techniques on , The Top Secret Photography Techniques. Anytime you learn about light and in what method it interacts with the direct environment then your photos will get more beneficial..". You need to know the measurements of your test board area, as well as the magnification value used when photographing the charts.

Viewing the photos at 100 percent with image editor software lets you analyze the performance of the lens, to see how well it detected the faintest lines on the chart. The black and white lines -- which should be distinguishable from one another -- determine the horizontal and vertical directions. The numbers indicate the lines per millimeter that the lens detected.

Multiplying the horizontal lines per millimeter value by the magnification used reveals your resolution for the lens. The calculation is repeated for vertical.

For optimal results, you need to test the lens at different apertures and distances. The more tests conducted, the more accuracy and understanding of the lens gained. Image resolution isn't based on one factor, but rather a combination of the lens and the camera sensor. Testing for both allows for better resolution.

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