In this post, I'll show you how you see through the viewfinder in an SLR camera.
Inside my Nikon F3, you'll see the reflex mirror. This is how you see through the lens from the viewfinder, similar to looking through a periscope. When you point the camera at an image, the image goes through the lens and it goes to the reflex mirror. The image is then reflected from the reflex mirror up through the pentaprism and then reflected to your eye.
In this image, I have pushed the reflex mirror up a bit to show you how it works.
This is what it looks like when the mirror is completely turned up. When this happens, there is a moment in time where you don't see any image through the viewfinder. This is because the mirror completely blocks your view but allows the image to go through the shutter and unto the film or sensor.
In the time of film, this is inevitable. Because you have to get the reflex mirror out of the way so the image can be transferred unto the film. But in modern cameras, I don't believe this is even necessary since you can pretty much use the LCD viewfinder like a video camera. I think this was kept to make it feel like you're using a photo camera.
Inside my Nikon F3, you'll see the reflex mirror. This is how you see through the lens from the viewfinder, similar to looking through a periscope. When you point the camera at an image, the image goes through the lens and it goes to the reflex mirror. The image is then reflected from the reflex mirror up through the pentaprism and then reflected to your eye.
In this image, I have pushed the reflex mirror up a bit to show you how it works.
This is what it looks like when the mirror is completely turned up. When this happens, there is a moment in time where you don't see any image through the viewfinder. This is because the mirror completely blocks your view but allows the image to go through the shutter and unto the film or sensor.In the time of film, this is inevitable. Because you have to get the reflex mirror out of the way so the image can be transferred unto the film. But in modern cameras, I don't believe this is even necessary since you can pretty much use the LCD viewfinder like a video camera. I think this was kept to make it feel like you're using a photo camera.
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