On the basis of optical interferometry measurement principle,the phase-shift error,camera error and optical error were analyzed and the optical error was confirmed to be the main error source and the focus axial error of the objective on the reference arm is the main causation that causes the conicoid error.

The use of contrast On television filming and production practices;

Taking the example of the making of special-topic films of Human Provincial People s Hospital,the paper introduces how to write good scripts,arrange filming and make communications between the two parties.

In order to obtain the clear and flow visualization image and improve the quality of fluid visualization photographic image,it is usually necessary to make tracer particles enlarged for shooting or near shooting and to distinguish the contrast degree between the background and the tracer particles.

Photographs shooting by digital camera possess the same legal validity with traditional camera,have more convenient operation and lighten foundation units administration expenses.

The shooting method and implementation of the"frozen time"digital video special effect are studied,and a new full- digital shooting system of"frozen time"special effect is established.

From practice, the writer summaries up some regulations for shooting demonstration lessons, and proposes that different demonstration lessons should adopt different ways, and also concretely expounds the process of selecting video cameras, setting up the position of video cameras, recording voice and so on.

There are some disadvantages in shooting medical operate-type video textbook according to the order of separate lens manuscripts: low shooting speed and efficiency,and difficulty in linking up the various factors among the lens.

According to the requirement of biomechanics video analysis, a feasible and scientific video photography is worked out for kinematics analysis of male triple jumps.