The accounting income maintains the financial capital preservation, namely, the monetary value that only requires the owner to invest is not eroded, the enterprise income exceeds the input value part is the accounting income. Accounting focuses on reporting financial results. The economic benefits insist on physical capital preservation, which can only be confirmed when the actual production capacity of the owner is saved. It is believed that only by maintaining the actual production capacity of the enterprise can the enterprise reproduce smoothly. Physical capital preservation is more meaningful than the income of financial capital preservation, but it is difficult to measure. All of the cameras reviewed below have the standard features - Exposure Control (Bulb, Manual, Shutter-priority, Aperture-priority, Auto, Depth of Field), Shooting Modes (Close-up, Landscape, Sports, Portrait and Night), Metering Modes (Spot, Partial, Evaluative, Center-weighted), shoot in RAW, RAW+JPEG and JPEG, White Balance Control and Exposure Compensation. Most offer an 18-55mm, f/3.5-5.6 kit lens as standard. The essence of the plan is to identify the objectives and the ways and means to achieve them. Therefore, how to move towards the established goal and achieve the organizational goal, the plan is undoubtedly the standard of all behaviors in the management activities. It directs people in different Spaces, time and positions to achieve their goals in an orderly fashion around a general goal. If there is no planning instruction, the manager will be shown as aimless aimlessness, and the manager will be shown as the policy decision to make decisions and make decisions. The result must be the chaos of organizational order, and the result of a lot of work. In a modern society, it can be said that almost every undertaking, every organization, and even every person's activities cannot have no blueprint. Accounting earnings include only realized gains, and exclude unrealized gains and losses, the economic benefits will be enterprise's operating earnings and are favorable to the same treatment, regardless of whether they have been implemented. Thus, in general, accounting gains are less than economic gains, and the difference is mainly in the interest. displacement