What kind of camera lens does a photographer use to sweep the streets?Here are some shots suitable for street sweeping:
- ** Large zoom lens **:
- ** Tenglong 50 - 400mm F4.5 - 6.3 E-mount lens **: The price is 8399 yuan. It breaks the conventional large zoom and redefined the Tianya lens. Although it lacks a wide angle, the overall quality is good. It can be used for street sweeping, tourism, landscape photography, etc. It weighs only 1155g and is relatively light.
- ** Tenglong 28 - 200mm F2.8 - 5.6 E-mount lens **: The price is about 5350 yuan. The wide-angle 28mm starting aperture reaches F2.8. The focal length range is wide and the image quality is better. It is more recommended than the original 24 - 240mm lens. It can reduce the weight burden of external photography.
- ** Nikon Z24 - 200mm F4 - 6.3 lens **: Price: 6380 yuan. It's a standard Tianya lens. It's coated with ARNEO, and it's also coated with fluorite. It's dust-proof and drip-proof, and it suppresses breathing during focus. It weighs 570g. The overall picture quality is good. It's suitable for daily street sweeping and traveling.
- ** Canon RF24 - 240mm F4 - 6.3 lens **: Price: 7999 yuan. Although the image quality is not particularly good, the focal length is wide and it is easy to shoot. It is a world-famous lens in the sense of the RF-mount. The sales are good.
- ** Tenglong 18 - 300mm F3.5 - 6.3 lens **: Price: 4190 yuan. It is also a large zoom lens suitable for street sweeping.
- ** Special focal length lens **:
- ** 35mm focal length lens **: It is an ideal focal length for street photography and is basically enough to use.
- **24 - 70mm lens **: Professional photographers and news photographers prefer it, and it is also the first choice for beginners. The focal length is both wide and medium, and there is no need to change the lens when sweeping the street. The 24 - 70mm F2.8DG GN II just launched by Sima| The Art lens was relatively light (E-mount 735g, L-mount 745g), fast response, and easy to play with at close range.
In addition, when sweeping the streets, you can also use the phone's telephoto lens and turn on the phone's sports mode to increase the shutter speed for capturing photos.
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Play chess online for freeXiangqi is an ancient and strategic board game. The following is a detailed introduction to offline Xiangqi:
##1. The composition and rules of Chinese chess
###(1) Chess board and chess pieces
1. ** Chessboard **
- The chessboard had 9x10 = 90 intersection points formed by the intersection of horizontal and vertical lines. These intersection points were the places where the chess pieces could be placed.
2. ** Chess piece **
- ** Commander (General)**: The head of the chess game, the target of both sides. They could only move within the Nine Palaces. Each time they moved a square according to the vertical or horizontal line, and the commander and the general could not be directly opposite each other in the same straight line. Otherwise, they would lose.
- ** Shi (Shi)**: It is the personal bodyguard of the general (marshal). It can only walk along the four slanted lines in the Nine Palaces.
- [Phase (Image): Mainly used to defend the commander (general) of one's side.] The method of walking was to walk two squares diagonally at a time (like flying fields). The range of activity was limited to the position of the side within the river boundary. It was not allowed to cross the river, and when there were chess pieces in the middle of the field, it was not allowed to walk (blocking the elephant's eye).
- [Chariot]: It is the most powerful in Chinese chess. It can move on both horizontal and vertical lines. As long as there are no chess pieces blocking it, the number of steps is not limited. One chariot can control 17 points (one chariot has ten chess pieces).
- [Cannon]: When not taking a piece, the movement is the same as the chariot; when taking a piece, there must be a piece between the opponent's and your own pieces (regardless of the opponent's or your own piece). It is the only type of chess that can be crossed.
- ** Horse **: The way to move is to walk diagonally. First, walk horizontally or straight for one square, then walk diagonally (Horse Walk Day). If there are other chess pieces blocking the direction you want to go, you can't go (Horse Leg). You can choose eight points around you at one time (Eight Faces of Power).
- [Soldier (Pawn): Before crossing the river, you can only move forward step by step. After crossing the river, you can move left and right except for not retreating. However, you can only move one step at a time. Pawn crossing the river is equivalent to half a cart.]
###(2) Terminology
1. ** Nine Palaces **: An area formed by two slanted lines and the surrounding squares.
2. [General: One side kills the other side's general or commander to force the other side to respond.]
3. [Head Cannon]: It is a common strategy to fire a cannon at the middle road to threaten the enemy's nine palaces. Because the general and commander's actions are limited to the nine palaces, the control power is very strong. It is also called the middle cannon.
4. Screen Horse: Two horses were separated on both sides of the Nine Palaces, shaped like a "screen" to protect the capital.
5. [One-sided horse: One horse guards the middle pawn while the other horse jumps to the side. There is a difference between the left and right one-sided horse layout.]
6. Two horses: one jumped nine roads, the other jumped one road.
7. [Warrior Horn Cannon]: Any of the two points from the flat cannon to the nine palaces.
8. [Immortal Shows the Way]: The first party will raise an elephant shoulder weapon (left or right) to test the other party's response, just like throwing a stone to ask for directions.
###(3) Rules
1. ** Eat the seed **
- Usually, as long as there was an opponent's piece in the position that could be reached according to the rules of chess, the opponent's piece could be taken. However, the cannon was special. It required a piece in the middle (whether it was his own or the opponent's piece) to take the opponent's piece.
2. ** Dying and trapped **
- One side's chess piece attacked the opponent's general (commander) and wanted to eat it in the next step. It was called Zhao Jiang (referred to as Jiang). Zhao Jiang did not need to be declared. The player who is being played must immediately respond to the general, that is, use his own method to resolve the state of being played. He cannot ignore the general and move other chess pieces.
##2. An example of a chess strategy (Take the game in Resource 2 as an example)
1. ** Opening Strategy **
- In a certain game, there would be a certain routine for ten rounds, starting with a straight pawn or a horizontal pawn. For example, the red side's artillery patrol along the river has the meaning of reaching 18 places along the river, the black side's retreat is the right move; The red side's army uses artillery to take a taxi, and the black side's flat car eats soldiers, etc.
2. ** Midgame Game **
- The red team used their cannons to disrupt the black team's formation and then flew towards the float. There were many considerations for hiding the black car, such as taking three steps forward. When faced with the red team's cannon, the black horse could not hide (otherwise, the red team would attack the general), but the black team could crush the horse and eat the red team. The red team chose to advance to the sixth with the goal of getting the first move. At this time, the black team either dodged the cannon or came out to protect them.
- In the subsequent situation, the red side did not attack the horse but made up the game, and the black side changed its strategy in the state of many pieces. The red team entered the chariot to catch the horse, the black team jumped on the horse, the red team abandoned the chariot to cut the cannon, the black team entered the chariot to eat the chariot, and the red team retreated to eat the cannon. If the red team successfully attacked, the black team might collapse on the spot. Black had different ways to deal with it, such as filling six roads, filling four roads, or dismantling the cannon carriage, but they all faced the killing skills of the red team.
- In the change of Black's retreat to defend the soldiers, Red's cannon is pressing on the general, and Black should retreat one step behind the Red's chariot to prepare to shoot the soldiers. Black entered the vehicle to defend, while the Red Team raised their troops. Black claimed that it was a seasoned move, solving the worries of the Red Team's flat cannon. The Red Team can use the cannon to throw away the pawn and grab the cannon. After the Red Team withdraws the cannon, they can enter the chariot and draw the general. After the Black Team takes a step, the Red Team can use the cannon to hit the pawn general. The Black Team has different ways to remove the general, such as moving the pawn general, kidnapping the general, returning the pawn to remove the general, calling it a general, etc., but there are problems, such as losing the chariot or the general.
- When the Red Cannon General was in charge, the Black Cannon General would move forward, and the Red Cannon General would take a step back in preparation for a flatcar attack or lure the Black Cannon General to take the cannon. If the Black Cannon General abandoned the flatcar and cut the cannon to weaken the Red Cannon General's attack, the Red Cannon General would take another cannon attack after taking a taxi.
##3. The actual scene of playing chess offline (like the scene of playing chess on the roadside in Resource 6)
1. ** Swindle scenario **
- In some roadside stalls playing chess, there might be scams. The onlookers around the stall owner might have been hired by the stall owner. When there were people watching, the stall owner would cheer and attract passers-by to play chess. For example, a man in Guangdong saw someone easily beat the stall owner in front of him, so he went to play chess. In the end, he lost so badly that he was even confused about paying. In fact, the stall owner let the conman win to attract the passers-by, but it was very difficult for the passers-by to win against the stall owner. Even if a national chess master played, it was basically difficult to win against these conmen. At most, it would be a draw. Therefore, the passers-by often gave the stall owner money when they played.
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