Ask the master photographer: friends who have used Nikon FM- 10 cameras are better.

FM 10 is a fully manual camera, and the requirements for operation are rather troublesome.

1 In most shooting, you don't need to focus on the central split image, just focus on the frosted screen, which is faster. To tell the truth, the failure of the focusing system is unlikely, so you can check it, open the back, start the B door and release it with a cable, and put a small piece of single-sided frosted glass in the bearing window (the frosted glass faces the lens). After focusing on the target, use a magnifying glass to check whether the image on the glass is consistent with the image in the viewfinder.

It is estimated that the non-automatic flash you provide for FM 10 needs to match the aperture and distance used. If the aperture is too large or too close, it will be overexposed and all white; If the aperture is too small or too far, it will be underexposed and completely black.

Shoot like a cloudy day. Because the light on cloudy days is scattered light, the difference between bright and dark parts is small, and the color is not as bright as that on sunny days, so it is easy to have what you call "the feeling of fog". Whether the sensitivity is 100 or 200.

4 is not adjustable.

5 Close-ups that need flash lighting are simply divided by the flash index, which is the required aperture. As for the night scene background, such as street view, aperture adjustment is of little use, just a medium size, and the key is that the exposure time may be as long as 1-30 seconds.