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crwdns2933797:0CHUNYU SHENcrwdnd2933797:0crwdne2933797:0
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| + | [* black] For SLR cameras, the gray seen in the viewfinder does not necessarily affect the imaging. According to the structure of SLR camera, we know that the ash falling on the reflector, focusing screen and viewfinder will only affect the viewfinder light path, not the imaging light path. |
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| + | [* black] Shrink the aperture to F16 or minimum, and shoot against the white and light wall (you may need to change the camera to manual focus and increase exposure compensation). Take multiple photos continuously. If there are dark spots at the fixed position, it indicates that there is "gray" on the photosensitive element. |
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