Hot boots and cold boots for photography cold knowledge

On the camera, if you want to enhance the brightness of the picture, in addition to opening the aperture, slowing down the shutter value or increasing the ISO value of the brightness, we can also use a flash to brighten the target at the shooting scene under the inevitable dark shooting situation. Everyone knows that the flash should be connected to the hot shoe seat of the camera, but there is also a term called "cold boots" What's the difference between them? Let the expert Mr. Herman solve the mystery for everyone!

What's the difference between hot boots and cold boots?

It has been raining heavily in Taiwan Province Province recently. When Ms. Herman went out for lunch, besides umbrellas, she saw rain boots the most. It rained for a few days, and I want to buy a pair of rain boots, too. What is the difference between rain boots and rain boots? I think what they have in common is "moisture-proof" function, but the old rain boots prevent "tide", and now the popular rain boots are "tide" ~

On the camera body, there is a seat for connecting accessories (usually connecting external flash), which is called "Hot Shoe seat", which is literally translated from the English word "hot shoe". Heat means that electricity will be applied to make the flashing lights "move". The basic hot shoe has two main contacts, one is the big dot in the middle (the place indicated by the red line) and the other is the long clamping groove (the place indicated by the blue line), which itself will be charged.

As can be seen from the three brands of cameras in the picture, each has these two basic contacts that meet international standards. As for the house around the big contacts, some small contacts are designed by themselves to control the flashing details of their own systems.

Knowing that the hot boots will have electricity, the so-called cold boots are very simple, just a seat frame, which is convenient for us to connect external accessories without electronic contacts. As shown in the figure below, the flash bracket attached to Canon factory allows the installation of flash, but it has no electric control function. It is only used to help the flash stand upright, or used in combination with tripod and lamp stand.

The cold boot seat is a photographic accessory that helps the flash stand upright.

This is the origin of hot boots and cold boots.

Teacher Herman also called this cold knowledge "bean knowledge". The so-called "bean knowledge" is something that seems unimportant and no one teaches, but when you want to learn advanced things, you will find that if you don't know, everything will be foggy. This may be a small matter, but sometimes it is the key to your advanced door!

Types of hot boots

Hot shoes have single contact, double contact or triple contact. Different contacts have different natural functions. The more contact, the more functions. For example, TTL flash must be sensed by special contacts. The minimum contact is only a flash function, and the flash output is completely controlled by itself. TTL is the abbreviation of THROUGH THE LENS, which means measuring light through the lens, mainly to distinguish paraxial cameras. This TTL measurement is more accurate and is the dominant mode at present.