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The video tutorial provides an overview of lens testing, focusing on the 135mm F2.8 lens and its color testing process. It then details the procedure for conducting color tests, followed by repeated testing using the 145mm F2.8 lens. The tutorial emphasizes the importance of consistency in testing to ensure accurate results.

What is the focal length of the lens introduced at the beginning of the video?

• 135mm

• 145mm

• 150mm

• 155mm

What is the aperture size of the 135mm lens discussed?

• F1.8

• F4.0

• F2.8

• F3.5

What type of testing is explained in the second section of the video?

• Color balance

• Chromatic

• Focus

• Distortion

What is the focal length of the lens repeatedly mentioned in the last section?

• 140mm

• 135mm

• 150mm

• 145mm

What is the aperture size of the 145mm lens discussed in the video?

• F2.8

• F2.0

• F1.8

• F3.5