Question 2: What do you mean by futures reverse orders? Lock positions generally refer to futures investors who open new positions opposite to their original positions after buying and selling futures contracts, which is also called lock positions, lock orders, or even euphemistically called butterfly Qi Fei. Locking is generally divided into two ways, namely profit locking and loss locking. Profit lock-in means that futures contracts bought and sold by investors have a certain floating profit. Investors feel that the original general trend has not changed, but the market may fall back or rebound briefly. Investors don't want to close the original low-priced orders or high-priced orders easily, so they continue to hold the original positions and open new positions in the opposite direction. Loss locking means that there is a certain degree of floating loss in futures contracts bought and sold by investors. Investors can't see the market outlook clearly, but they don't want to turn the floating loss into an actual loss, so they continue to hold the original loss position and open a new position in the opposite direction in an attempt to lock in the risk. Generally speaking, futures are a two-way transaction, which can buy down or buy up. You buy at 1 first, and you buy at 1 first, which cancels out! ! The ups and downs have nothing to do with your list!
Question 3: What does receipt mean? Reorder of last order
It can't be said that it is a replacement or a return, because a replacement or a return is a transaction that has already happened.
Question 4: What does "anti-order" mean in clothing business? It should be a return order, that is, the first batch of goods has been sold out, the second batch after the first batch of replenishment, the third batch, and so on.
Question 5: What does SLR information mean? The SLR information is a key on the SLR body. When you press this key, the currently set camera parameters will appear on the display screen, which can be considered as the * * * part of camera parameter setting, as shown in the following figure:
After pressing the info key, the information as shown in the figure will appear. In addition to checking these parameters, you can also set parameters. If you need to set ISO, please press the button under ISO on the left. At this time, only ISO data is highlighted in white, and other data are displayed in gray. Then adjust the ISO value through the dial next to the shooting button.
Tip:
When you feel that the photos taken are abnormal, you can quickly check the settings of shooting parameters through the info panel, which can effectively improve work efficiency.
Question 6: What does SLR mean? SLR is a single lens reflex camera. Simply put, it is the body of a common "cannon" (telephoto lens) camera. At present, the mainstream SLR has Canon, Nikon, Pentax, Sony, Fuji and so on, among which Canon and Nikon have the most fans.
Generally, the entry-level cameras of these two brands are 3K~5K, the mid-range cameras are 8K~ 1. 1W, and the mid-and high-end cameras are1.2w ~ 2.2w. We don't know much about high-end cameras, so we have to start with 4W. (The above are all new quotations from Bank of China).
As for "poor B is crazy, rich generation plays watches, rich generation plays cars, and tasteful rich people play SLR." I don't know if this statement is a portrayal of real life, but personally, you don't have to have money to play SLR. If you are interested in playing, you can add a wide-angle lens (17 ~ 40m4l), a medium-focus lens (70 ~ 200m4l), a fixed-focus lens (50 1.8), a tripod, a series of cable release and other accessories. If you don't buy a new one, you can definitely buy a second-hand price without 2W if you know professionals.
Everyone on the internet says that playing SLR costs money, but the experts around me don't burn much money. A camera, one or two lenses, if you want to upgrade the lens, you should sell the lens with repeated focal length second-hand, and the upgraded lens is also bought second-hand, so if you are not in a hurry to upgrade, you can always find it cheap, and you can always make a profit when you release it second-hand.
So I don't agree with the saying that "rich people with taste play SLR" and "playing SLR is burning money".
All the above are personal opinions, answered by hand, and there is no plagiarism.
I hope I can help the landlord understand what he wants to know.
Question 7: What does a SLR camera mean? When shooting, press the shutter button, the mirror will pop up and the shutter curtain in front of the film will open at the same time. The light (image) passing through the lens will be projected on the film to make the film sensitive, and then the mirror will be restored immediately, and the image can be seen in the observation window again. This structure of the single-lens reflex camera ensures that it is shot through the lens, so that the image seen in the observation window is always consistent with the image on the film, and its framing range is basically consistent with the actual shooting range, eliminating the parallax phenomenon of the paraxial head-up framing camera. From the perspective of learning photography, it is very conducive to intuitive framing and composition. Because the whole imaging system of SLR (focusing and shooting) is a lens, there is no parallax, that is, the framing and imaging are the same. (Traditional cameras are mostly paraxial cameras. Secondly, because the imaging system is used as the lens, the coordinated response is faster than that of ordinary cameras, so the SLR camera can better shoot high-speed moving objects (it will not miss the beautiful scenery because of the slow response of the camera). Thirdly, SLR cameras use lens transformation to form different photography systems. For example, you can change wide-angle lenses, lengthen lenses, add color films and choose macro lenses to meet your different needs. You won't miss the beautiful scenery because the camera lens is limited. Finally, because SLR cameras mostly use pure natural crystal or fluorite polished lenses, the price is much more expensive than ordinary glass and plastic lenses. Some even use ultrasonic motors to adjust the lens, the vibration IS smaller than mechanical ones, and some have their own anti-shake patents (for example, Canon's EF series lenses have IS logo), especially the so-called pure natural fluorite lenses with red lines. A lens is between 30,000 and 50,000 yuan. DSLR digital camera refers to a single-lens reflex digital camera, that is, digital, single-lens, lens and reflex. Representative models in the market are common in Nikon, Sony, Canon, Pentax, Fuji and so on. This kind of camera is usually big and heavy. Models that use electronic viewfinder EVF are also classified as SLR, but generally "similar" is added or EVF framing is indicated, such as Olympus C-2 100UZ and Fuji Finepix 6900. In the working system of SLR digital camera, after the light reaches the reflector through the lens, it refracts to the focusing screen above to form an image. Through the eyepiece and pentaprism, we can see the scenery outside in the observation window. In contrast, ordinary digital cameras can only see the captured images through the LCD screen or electronic viewfinder (EVF). Obviously, the directly seen image is more conducive to shooting than the processed image. A major feature of SLR digital cameras is that they can change lenses of different specifications, which is an inherent advantage of SLR cameras and incomparable to ordinary digital cameras. CMOS sensor In addition, SLR digital cameras are now positioned as high-end products in digital cameras, so the area of the photosensitive elements (CCD or CMOS) related to the photographic quality of digital cameras is much larger than that of ordinary digital cameras, which makes the photosensitive area of each pixel of SLR digital cameras much larger than that of ordinary digital cameras, so each pixel can show more detailed brightness and color range, which makes the photographic quality of SLR digital cameras significantly higher than that of ordinary digital cameras. Simply put, SLR digital cameras are not suitable for any users. First of all, it is one thing to have the necessary professional knowledge. Secondly, to make good use of SLR digital cameras, we must match different types of lenses, which is likely to make the cost of lenses higher than the cost of buying digital cameras. Moreover, when traveling abroad, the weight of camera bag with lens group is much higher than that of ordinary camera, which will become a serious burden in the travel process. In addition, when changing the lens of SLR digital camera, the photosensitive element will be directly exposed to the air, so we must also pay attention to the maintenance of the camera when using it. Therefore, although the shooting quality of SLR digital cameras is higher and the price has dropped a lot now, it is not suitable for all users, and users should choose according to their own needs when purchasing.
Question 8: What do you mean by mid-range SLR? This is just a relative concept. SLR is divided into entry-level (low-end SLR), mid-range (quasi-professional) and high-end SLR. The imaging quality of mid-range SLR is good, which is more suitable for enthusiasts. The price of a single machine is generally around 65438+100000. There are Nikon D7000, Canon D760D and Pentax 645D.
Question 9: What does SLR mean? Single set is equipped with 18-70mm lens.
The two-lens package is equipped with 18-70mm and 75-300mm lenses.
A stand-alone machine just has no lens.
You can't take pictures without a lens.
18-70mm lens value 200-300 yuan
75-300mm lens is worth 800- 1000 yuan.
Novices should buy a pair of sets.
Another 50mm 1.4
Upgrade the lens after practice.
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