Canon 700D 18- 135 lens. I want to ask how to adjust the aperture and shutter speed to take a clear picture … how to set the aperture and shutter speed?

To ensure the clarity of photos, simply put, it is to ensure that the shutter time is less than the safety shutter as much as possible. The value of the safety shutter of 135 SLR is approximately equal to the reciprocal of the focal length, but 700D is an APS-C camera, and the equivalent focal length is 0.6 times of the actual focal length of 65438+, so the safety shutter of your 18- 135 lens should be calculated according to the focal length of 29-2 16. Another problem is that your lens has anti-shake function. We can approximately think that the anti-shake lens can slow down the shutter speed of two gears, that is,1/8seconds when 18mm and1/50s when 135 mm. Of course, the empirical formulas of these things are actually related to the stability of your hand and the moving speed of the subject. When the motion speed of the subject is fast, the shutter speed will be greatly improved. As for the aperture, it has nothing to do with the clarity of the subject, but with the clarity of objects outside the follow focus, such as the background. Simply put, the larger the aperture, the more blurred the background. So use a large aperture when taking portraits and a small aperture when taking scenery. In addition, the aperture value displayed in the camera is actually the denominator, that is, the larger the number after that f, the smaller the aperture.