Definition of autofocus in English:

autofocus

noun ˈɔːtə(ʊ)ˌfəʊkəsˈɔdoʊˌfoʊkəs

1A device focusing a camera or other piece of equipment automatically.
（照相机等仪器的）自（动）调焦装置
Example sentencesExamples
- The larger issue concerns the fact that some purchasers of the new digital model are complaining that the autofocus doesn't work properly; that the camera focuses slightly ahead of or behind the intended spot.
- Only trick is to wind the window down first (or the autofocus won't work) and don't drop the camera.
- The autofocus was shaky in the cold, and my gloved hands kept moving the exposure dial.
- Actually, where the latter is concerned you've no choice, but I often find myself turning off the autofocus and twisting the focus ring manually, too.
- If you use the autofocus (which I don't) this is definitely the camera to get.
- In either case, you'll know when you're trying to take a picture that's beyond the camera's close-focus capability, because the autofocus won't lock on.
- Image noise is not too bad and generally the autofocus is quick and effective.
- The optical zoom covers a 28 mm to 200 mm range, and the autofocus can be overridden with a manual focus.
- You can adjust the output of the flash and set its autofocus to focus on the left, center, right or all three areas within the image frame.
- It is also useful when the camera's autofocus misbehaves for some reason and insists on focusing on the matrix or the background rather than on the crystals you are trying to capture.
- And all of them have an electronic viewfinder instead of an optical one: these models have a light on the front that helps the autofocus do its job even in the dark, a nice touch.
- An almost prescient autofocus instantly zeroes in on your quarry, then continuously adjusts to stay locked on to that charging moose until you nail the shot.
1. 1.1mass noun The facility for automatic focusing.
  自（动）调焦
  these pictures were shot with the help of autofocus
  Example sentencesExamples
  The microscope also has an autofocus mechanism.
  When shooting, the camera is satisfyingly responsive, with quick autofocus and minimal shutter delay.
  The central microprocessor receives information from the autofocus system and the light meter.
  There's no autofocus, no auto-exposure, no auto-film-winding, no auto-nothing.
  The combination of low angle, wide lens and autofocus created a unique perspective.
  If you were to photograph people, then I would say autofocus would be useful.
  Precision and speed of autofocus are of the utmost importance for the quality of object detection and the slide scanning results.
  Manual-focus cameras use a linear polarizer, while many autofocus cameras use a circular version.
  A bottom end camera body, but with autofocus.
  The company has also developed some novel technology to drive autofocus mechanisms for mobile phone cameras.
  Don't expect to find autofocus or any to other ‘latest features' type stuff on them.
  An autofocus camera typically shifts the positions of some of those optical elements forward and backward until a sensor that monitors contrast differences in the field of view detects sufficient detail.
  But this particular shot couldn't have been taken with anything other than an autofocus camera.

Derivatives

autofocusing
自（动）调焦

noun

Cells were monitored in an inverted phase contrast microscope with autofocusing controlled by dedicated software.
Example sentencesExamples
- Because a dedicated flash's output is mated to the autofocusing system, the camera even knows how far away your subject is.
- One option would be to use the precision-engineered rings of piezoelectric ceramic used in stills cameras to move an autofocusing lens.
- For his dissertation topic, he decided to see what it would take to devise a new type of lens that would make autofocusing work better.
- Both cameras have rudimentary center-frame autofocusing points - along with a focus lock that lets you zero in on a subject and then recompose the shot.

Definition of autofocus in US English:

autofocus

nounˈôdōˌfōkəsˈɔdoʊˌfoʊkəs

1A device that focuses a camera or other piece of equipment automatically.
（照相机等仪器的）自（动）调焦装置
Example sentencesExamples
- The larger issue concerns the fact that some purchasers of the new digital model are complaining that the autofocus doesn't work properly; that the camera focuses slightly ahead of or behind the intended spot.
- An almost prescient autofocus instantly zeroes in on your quarry, then continuously adjusts to stay locked on to that charging moose until you nail the shot.
- Actually, where the latter is concerned you've no choice, but I often find myself turning off the autofocus and twisting the focus ring manually, too.
- You can adjust the output of the flash and set its autofocus to focus on the left, center, right or all three areas within the image frame.
- The autofocus was shaky in the cold, and my gloved hands kept moving the exposure dial.
- Image noise is not too bad and generally the autofocus is quick and effective.
- The optical zoom covers a 28 mm to 200 mm range, and the autofocus can be overridden with a manual focus.
- If you use the autofocus (which I don't) this is definitely the camera to get.
- In either case, you'll know when you're trying to take a picture that's beyond the camera's close-focus capability, because the autofocus won't lock on.
- Only trick is to wind the window down first (or the autofocus won't work) and don't drop the camera.
- It is also useful when the camera's autofocus misbehaves for some reason and insists on focusing on the matrix or the background rather than on the crystals you are trying to capture.
- And all of them have an electronic viewfinder instead of an optical one: these models have a light on the front that helps the autofocus do its job even in the dark, a nice touch.
1. 1.1 Automatic focusing.
  自（动）调焦
  these pictures were shot with the help of autofocus
  Example sentencesExamples
  The company has also developed some novel technology to drive autofocus mechanisms for mobile phone cameras.
  Precision and speed of autofocus are of the utmost importance for the quality of object detection and the slide scanning results.
  The central microprocessor receives information from the autofocus system and the light meter.
  Manual-focus cameras use a linear polarizer, while many autofocus cameras use a circular version.
  A bottom end camera body, but with autofocus.
  Don't expect to find autofocus or any to other ‘latest features' type stuff on them.
  The combination of low angle, wide lens and autofocus created a unique perspective.
  If you were to photograph people, then I would say autofocus would be useful.
  The microscope also has an autofocus mechanism.
  But this particular shot couldn't have been taken with anything other than an autofocus camera.
  There's no autofocus, no auto-exposure, no auto-film-winding, no auto-nothing.
  When shooting, the camera is satisfyingly responsive, with quick autofocus and minimal shutter delay.
  An autofocus camera typically shifts the positions of some of those optical elements forward and backward until a sensor that monitors contrast differences in the field of view detects sufficient detail.

词汇	autofocus
释义	Definition of autofocus in English: autofocus noun ˈɔːtə(ʊ)ˌfəʊkəsˈɔdoʊˌfoʊkəs 1A device focusing a camera or other piece of equipment automatically. （照相机等仪器的）自（动）调焦装置 Example sentencesExamples The larger issue concerns the fact that some purchasers of the new digital model are complaining that the autofocus doesn't work properly; that the camera focuses slightly ahead of or behind the intended spot. Only trick is to wind the window down first (or the autofocus won't work) and don't drop the camera. The autofocus was shaky in the cold, and my gloved hands kept moving the exposure dial. Actually, where the latter is concerned you've no choice, but I often find myself turning off the autofocus and twisting the focus ring manually, too. If you use the autofocus (which I don't) this is definitely the camera to get. In either case, you'll know when you're trying to take a picture that's beyond the camera's close-focus capability, because the autofocus won't lock on. Image noise is not too bad and generally the autofocus is quick and effective. The optical zoom covers a 28 mm to 200 mm range, and the autofocus can be overridden with a manual focus. You can adjust the output of the flash and set its autofocus to focus on the left, center, right or all three areas within the image frame. It is also useful when the camera's autofocus misbehaves for some reason and insists on focusing on the matrix or the background rather than on the crystals you are trying to capture. And all of them have an electronic viewfinder instead of an optical one: these models have a light on the front that helps the autofocus do its job even in the dark, a nice touch. An almost prescient autofocus instantly zeroes in on your quarry, then continuously adjusts to stay locked on to that charging moose until you nail the shot. 1.1mass noun The facility for automatic focusing. 自（动）调焦 these pictures were shot with the help of autofocus Example sentencesExamples The microscope also has an autofocus mechanism. When shooting, the camera is satisfyingly responsive, with quick autofocus and minimal shutter delay. The central microprocessor receives information from the autofocus system and the light meter. There's no autofocus, no auto-exposure, no auto-film-winding, no auto-nothing. The combination of low angle, wide lens and autofocus created a unique perspective. If you were to photograph people, then I would say autofocus would be useful. Precision and speed of autofocus are of the utmost importance for the quality of object detection and the slide scanning results. Manual-focus cameras use a linear polarizer, while many autofocus cameras use a circular version. A bottom end camera body, but with autofocus. The company has also developed some novel technology to drive autofocus mechanisms for mobile phone cameras. Don't expect to find autofocus or any to other ‘latest features' type stuff on them. An autofocus camera typically shifts the positions of some of those optical elements forward and backward until a sensor that monitors contrast differences in the field of view detects sufficient detail. But this particular shot couldn't have been taken with anything other than an autofocus camera. Derivatives autofocusing 自（动）调焦 noun Cells were monitored in an inverted phase contrast microscope with autofocusing controlled by dedicated software. Example sentencesExamples Because a dedicated flash's output is mated to the autofocusing system, the camera even knows how far away your subject is. One option would be to use the precision-engineered rings of piezoelectric ceramic used in stills cameras to move an autofocusing lens. For his dissertation topic, he decided to see what it would take to devise a new type of lens that would make autofocusing work better. Both cameras have rudimentary center-frame autofocusing points - along with a focus lock that lets you zero in on a subject and then recompose the shot. Definition of autofocus in US English: autofocus nounˈôdōˌfōkəsˈɔdoʊˌfoʊkəs 1A device that focuses a camera or other piece of equipment automatically. （照相机等仪器的）自（动）调焦装置 Example sentencesExamples The larger issue concerns the fact that some purchasers of the new digital model are complaining that the autofocus doesn't work properly; that the camera focuses slightly ahead of or behind the intended spot. An almost prescient autofocus instantly zeroes in on your quarry, then continuously adjusts to stay locked on to that charging moose until you nail the shot. Actually, where the latter is concerned you've no choice, but I often find myself turning off the autofocus and twisting the focus ring manually, too. You can adjust the output of the flash and set its autofocus to focus on the left, center, right or all three areas within the image frame. The autofocus was shaky in the cold, and my gloved hands kept moving the exposure dial. Image noise is not too bad and generally the autofocus is quick and effective. The optical zoom covers a 28 mm to 200 mm range, and the autofocus can be overridden with a manual focus. If you use the autofocus (which I don't) this is definitely the camera to get. In either case, you'll know when you're trying to take a picture that's beyond the camera's close-focus capability, because the autofocus won't lock on. Only trick is to wind the window down first (or the autofocus won't work) and don't drop the camera. It is also useful when the camera's autofocus misbehaves for some reason and insists on focusing on the matrix or the background rather than on the crystals you are trying to capture. And all of them have an electronic viewfinder instead of an optical one: these models have a light on the front that helps the autofocus do its job even in the dark, a nice touch. 1.1 Automatic focusing. 自（动）调焦 these pictures were shot with the help of autofocus Example sentencesExamples The company has also developed some novel technology to drive autofocus mechanisms for mobile phone cameras. Precision and speed of autofocus are of the utmost importance for the quality of object detection and the slide scanning results. The central microprocessor receives information from the autofocus system and the light meter. Manual-focus cameras use a linear polarizer, while many autofocus cameras use a circular version. A bottom end camera body, but with autofocus. Don't expect to find autofocus or any to other ‘latest features' type stuff on them. The combination of low angle, wide lens and autofocus created a unique perspective. If you were to photograph people, then I would say autofocus would be useful. The microscope also has an autofocus mechanism. But this particular shot couldn't have been taken with anything other than an autofocus camera. There's no autofocus, no auto-exposure, no auto-film-winding, no auto-nothing. When shooting, the camera is satisfyingly responsive, with quick autofocus and minimal shutter delay. An autofocus camera typically shifts the positions of some of those optical elements forward and backward until a sensor that monitors contrast differences in the field of view detects sufficient detail.
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