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The mirror is part of the viewing/focusing mechanism.

In an SLR with a pentaprism or similar means of getting the light from the lens to the eyepiece, the light coming through the lens has to be redirected vertically up, and then redirected horizontally out, to the back of the camera. The mirror is used as the first means of diversion because it is directly behind the lens and also may provide some or all of the blockage between the lens and the film or sensor. (some SLRs may have no focal plane shutter just a mirror, that flips up for the amount of time that the shutter speed is set).

In a rangefinder camera if it is a mirror assembly then the mirror picks up a second image through a second port that is then redirected by the mirror to the main eyepiece viewer, and focusing is based on adjusting the secondary image that is superimposed on the main eyepiece viewer. SLRs can have a combination of such a "split image" as well as soft-to-sharp focus system but again it is direct through the lens.

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14y ago

Reflects the image the lens sees to the viewfinder.

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Q: What does a mirror do in a camera?
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How do you take a photograph using a mirror?

Yes but a front surface mirror ( the mirror is on the front of the glass not behind it ) is best. If you are going to take a photo of yourself in a mirror you have to place the camera at an angel where the camera sees you in the mirror and you see the camera not yourself. So place the camera at a 45 degree angle to the mirror and place yourself opposite of it. look at the camera, set the timer and let it go or use a long shutter release if the camera is designed for it. Of course those of us who carry rangefinders, SLRs or TLRs have been taking photos with mirrors for years.


How do you shoot a mirror with video camera without showing the camera in the mirror?

Well ,u may put a net between the camera and the mirror , and the net should be very close to the camera and considerablly far from the mirror.here the camera will be able to shoot the miror as the openings in the net won't seem too small ,since it is close to the camera , while the mirror won't reflect the camera as the net's opennings will appear as it doesn't exist , because it will look narrower as we go far till it seems to be closed , thus , will cover the camera.


If you wish to photograph the image of your little sister who is standing 2 meters from a plane mirror holding the camera beside her head you should set the distance for?

Your camera lens would be set for the distance from you to the mirror plus 2 meters if you wanted the image of your sister to be in focus. If she wanted to take a picture of her own image with the camera she is holding next to her head, her lens would be set to 4 meters.


Can you take a photograph of your image in a plane mirror and focus the camera on both your image and the mirror frame?

Only if you are using a pinhole camera.If you reduce the aperture you will increase the depth of focus, but you can't decrease the aperture to a pinhole on most cameras.


To take a clear picture of an image in a mirror should the camera be focused on the image or the mirror?

An image in a mirror is a "virtual" image which takes on certain characteristics. One of these characteristics is that the apparent distance is equal to the distance from the observer to the mirror plus the distance from the mirror to the subject. If the observer and subject are the same, then the apparent distance is twice that of the subject to the mirror. If the observer is 3 feet from the mirror and the subject is 20 feet away, the apparent distance is 23 feet. If you focus on the subject and have distance markings on your lens, you can prove this to yourself.

Related questions

What is the mirror inside a film camera called?

reflex mirror


Is the Nikon L340 a dslr camera?

No. A DSLR camera has a mirror that flips during the picture taking sequence. The Nikon L340 is a digital camera but does not have a mirror inside.


How do you take a photograph using a mirror?

Yes but a front surface mirror ( the mirror is on the front of the glass not behind it ) is best. If you are going to take a photo of yourself in a mirror you have to place the camera at an angel where the camera sees you in the mirror and you see the camera not yourself. So place the camera at a 45 degree angle to the mirror and place yourself opposite of it. look at the camera, set the timer and let it go or use a long shutter release if the camera is designed for it. Of course those of us who carry rangefinders, SLRs or TLRs have been taking photos with mirrors for years.


How do you shoot a mirror with video camera without showing the camera in the mirror?

Well ,u may put a net between the camera and the mirror , and the net should be very close to the camera and considerablly far from the mirror.here the camera will be able to shoot the miror as the openings in the net won't seem too small ,since it is close to the camera , while the mirror won't reflect the camera as the net's opennings will appear as it doesn't exist , because it will look narrower as we go far till it seems to be closed , thus , will cover the camera.


What does a mirror do in a digital camera?

The camera lens reflects off what the lens is pointed at so that you can see it through the screen on your camera.


Can you photograph yourself in a mirror and focus the camera on both your image and the mirror frame?

YES u can


How do you activate camera underneath the rear view mirror of 2014 bmw 220i?

Activating a camera under a rear view mirror is easy. All you have to do is screw one in place.


How can a mirror inside a camera come off?

You probably dropped the camera, this is most likely to happen if mishandled.


How do you do self portraits?

1. Hmm, i suggest bringing your camera to a mirror ( hopefully clear and clean ) and turn the camera towards you. Now if you look in the mirror you should be able to see the reflection of the camera and you in the sight of the camera. Take the picture while holding the camera back and looking in the mirror to make sure you focus the camera correctly on yourself instead of onto the sides. 2. Ask a friend to take a picture of you =P Hope it helped Haha lol


Why shopkeepers place mirrors at the top corner of their shop?

There is a CCTV camera pointed at the mirror. Because the mirror is convex (buldges out), the CCTV camera can see the whole of the shop at one time.


How do you take self portraits?

1. Hmm, i suggest bringing your camera to a mirror ( hopefully clear and clean ) and turn the camera towards you. Now if you look in the mirror you should be able to see the reflection of the camera and you in the sight of the camera. Take the picture while holding the camera back and looking in the mirror to make sure you focus the camera correctly on yourself instead of onto the sides. 2. Ask a friend to take a picture of you =P Hope it helped Haha lol


How does the camera not disintergrate during nuclear bomb tests?

The camera is at a calculated safe distance, the camera is shock mounted in plastic foam, the camera is shielded from direct radiation, the camera photographs an indirect image via a mirror.