How does a purely mechanical camera measure light without a battery?

How can a purely mechanical camera measure light without a battery? If you don't spend extra money on exposure meters ... then send four sentences, hehe.

Zoom basically depends on walking, anti-shake basically depends on elbow, focusing basically depends on hand, and metering basically depends on watching.

Q: How do mechanical cameras without metering grasp the shutter aperture? If you use it frequently, buy an exposure meter. Exposure parameters are determined by photometry of exposure meter. Film is very expensive. Improper exposure wastes film, as well as expression and time.

What happens if the mechanical camera doesn't measure light? Traditional film cameras manually set the shutter speed and aperture without measuring light. In addition to empirical estimation, you can also use an exposure meter, and the mobile app also has an exposure meter function.

Mechanical watches don't need batteries. Mechanical watches do not need batteries.

Mechanical watches can usually be divided into the following two types: manual winding list and automatic watch. The power source of these two machines is driven by the clockwork in the movement, which drives the gear and then pushes the watch hands, but the power source is different. Hand-made mechanical watches are all wound manually, and the thickness of the movement is thinner than that of ordinary self-winding watches, so the weight of the whole watch is relatively light. Self-winding watches use the power generated by the swing of the automatic disk at the bottom of the movement to drive the spring to generate energy, but the relative thickness of the watch book will be thicker than that of ordinary manual winding watches. The advantage of mechanical watches is that they can be used for a long time after regular maintenance and oil washing; But the disadvantage is that the error is larger than that of quartz watch, which is caused by the influence of watch quality and gravity on the movement in the watch. Usually, the error of mechanical watches is calculated by how many seconds are different every day, while the error of quartz watches is calculated by how many seconds are different every month. "

For cameras without batteries, the rigorous way to take them out is to remove the batteries when not in use and cover them with a safety cover for storage at low temperature and moisture-proof, but they are not used frequently for three or five days, so it is not a big problem to leave them in the camera. Now the security of the original camera is also very high.

Do mechanical watches need batteries? Mechanical watches do not need batteries, but are wound by power, which can be divided into automatic watches and ordinary mechanical watches. Automatic watches are watches that wind up automatically by swinging a flywheel outside. Ordinary mechanical watches need 1~2 days to wind up manually.

Is there a fully mechanical single-lens reflex camera without batteries? Yes

Graflex first produced a single-lens reflex camera in 1909. The modern 35mm single lens reflex camera was put forward by Exakta in 1936.

120 series: Hasselblad) 500C, 50 1CM, mamia) RB-67, etc.

135 series: Leica) M6, Nikon f, Kiev, seagull DF- 1 etc.

Single-lens reflex cameras produced abroad before the 1970s were completely mechanical and had no batteries (including photometry).

How to discharge a camera without batteries for a long time? At present, the batteries used in cameras are basically lithium batteries, which not only do not need to discharge, but also endanger the battery life.

When storing lithium batteries, the ideal state should be about half of the power, but the battery may self-discharge slowly during storage, so it is generally encouraged to store them fully charged and use them once every three months.

About the LOMO camera without battery, roll it by hand. There is a small pattern of a roll.

Old SLR cameras are like this. Very cute.

Do you have a camera without batteries? Yes ~ ~ there is a pure machine ~ ~ but there is no autofocus and no metering.