1, the lens of the mtf
The mtf of the lens is a test parameter that reflects the imaging quality of the lens and the ability of the lens to reproduce the real world. The English name of mtf is the modular transfer function. Although the lens mtf was adopted by several lens manufacturers, it is not an international standard. Since the digital camera is a photoelectric integration product, especially non-professional models, the lens is not replaceable. Imaging not only reflects the imaging performance of the lens, but mtf is only one of the parameters reflecting the quality of the lens imaging.
2. Lens Group The lens of a digital camera consists of multiple lenses. The material is divided into glass and plastic. Some manufacturers emphasize that their camera lens is made of glass, so the light transmittance is good and the projected image is clearer. However, many test reports have shown that glass lenses do not necessarily provide clearer images than plastic materials. At the same time, glass lenses may also increase the weight of the camera. Therefore, you should do more observations when purchasing, do not rigidly adhere to the lens material. On the issue.
3, caliber (lens thread), the diameter of the camera lens front.
4. The shutter is a device that blocks light from coming in front of the lens. In general, the larger the time range of the shutter, the better. The low number of seconds is suitable for shooting objects in motion, and a camera emphasizes that the shutter can reach 1/16000 seconds at the fastest, and can easily catch the target of rapid movement. However, when you are shooting at night, the shutter time will increase, and the silky water effect in common photos will also need to be taken with a slow shutter speed.
As for the b-shutter function common to monocular cameras, although you are free to determine the length of the exposure time and the shooting flexibility is higher, most consumer digital cameras do not support it yet, providing up to 2 seconds, 8 seconds, 16 seconds, etc. Slower speed defaults.
5. Shutter lag time The camera does not use the focus lock function while ensuring that the time from the pressing of the shutter release button to the start of exposure in the autofocus operation is called the shutter lag time.
6. Shutter-Priority Exposure Mode After we determine the shutter speed by ourselves, the camera metering system automatically selects the appropriate aperture f-number (which can be a non-stage f-number) according to the current light conditions. Digital cameras with an exposure mode dial usually have the letter 's' engraved on the turntable to represent the shutter priority mode. Shutter-priority mode is suitable for photography that requires shutter control. Use the high-speed shutter to condense the action, and use the slow shutter to make the moving vehicle into the light beam.
7. The shutter delay The camera presses the shutter. At this time, the camera automatically focuses, measures the light, calculates the exposure, and selects the appropriate exposure combination. The time required for data calculation and storage processing is called the shutter delay.
The mtf of the lens is a test parameter that reflects the imaging quality of the lens and the ability of the lens to reproduce the real world. The English name of mtf is the modular transfer function. Although the lens mtf was adopted by several lens manufacturers, it is not an international standard. Since the digital camera is a photoelectric integration product, especially non-professional models, the lens is not replaceable. Imaging not only reflects the imaging performance of the lens, but mtf is only one of the parameters reflecting the quality of the lens imaging.
2. Lens Group The lens of a digital camera consists of multiple lenses. The material is divided into glass and plastic. Some manufacturers emphasize that their camera lens is made of glass, so the light transmittance is good and the projected image is clearer. However, many test reports have shown that glass lenses do not necessarily provide clearer images than plastic materials. At the same time, glass lenses may also increase the weight of the camera. Therefore, you should do more observations when purchasing, do not rigidly adhere to the lens material. On the issue.
3, caliber (lens thread), the diameter of the camera lens front.
4. The shutter is a device that blocks light from coming in front of the lens. In general, the larger the time range of the shutter, the better. The low number of seconds is suitable for shooting objects in motion, and a camera emphasizes that the shutter can reach 1/16000 seconds at the fastest, and can easily catch the target of rapid movement. However, when you are shooting at night, the shutter time will increase, and the silky water effect in common photos will also need to be taken with a slow shutter speed.
As for the b-shutter function common to monocular cameras, although you are free to determine the length of the exposure time and the shooting flexibility is higher, most consumer digital cameras do not support it yet, providing up to 2 seconds, 8 seconds, 16 seconds, etc. Slower speed defaults.
5. Shutter lag time The camera does not use the focus lock function while ensuring that the time from the pressing of the shutter release button to the start of exposure in the autofocus operation is called the shutter lag time.
6. Shutter-Priority Exposure Mode After we determine the shutter speed by ourselves, the camera metering system automatically selects the appropriate aperture f-number (which can be a non-stage f-number) according to the current light conditions. Digital cameras with an exposure mode dial usually have the letter 's' engraved on the turntable to represent the shutter priority mode. Shutter-priority mode is suitable for photography that requires shutter control. Use the high-speed shutter to condense the action, and use the slow shutter to make the moving vehicle into the light beam.
7. The shutter delay The camera presses the shutter. At this time, the camera automatically focuses, measures the light, calculates the exposure, and selects the appropriate exposure combination. The time required for data calculation and storage processing is called the shutter delay.
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