Ready to buy a camera jvc gr-d347u charger, especially second-hand camera, you can start with the appearance of the existing police began to require collision-free body scars, no corrosion phenomenon, no deformation and decorative leather or paint five tilt or off phenomenon. Camera case seams to be tight symmetry, without exception in the rock sound. Camera camera obscura black matte finish requirements.

Detection with electronic metering function or automatic exposure camera, turn the power switch on the light and dark features of different metering, the former indicating needle exposure meter or light emitting diodes, liquid crystal display should respond quickly, which aperture and shutter will automatically make a different size, the pace of change. In general, the brighter the scene being shot, the shorter the time the shutter opens, the smaller the aperture of the hole diameter.

For the jvc gr-d31us charger auto-focus camera (the body will be up for AF words), select different objects near and far, the viewfinder, center alignment of these features, press the shutter should be obvious when the lens back and forth movement. In general, objects to the near focus and press the shutter, the lens retracted inward, contrary to the distant objects in focus, the lens protruding.

Camera lens just like the human eye, the selection should be checked carefully. If the SLR camera, you can remove the camera lens, carefully observed. B door if there is a high-level fool machine, the lens can not be unloaded, you can open the camera back, open the door B, and back from the front of the lens within the lens by transmitted light observation. The lens should be clean and transparent as crystal, mirror clean, no fingerprints, oil performance, scratches, chipping (edge ??cracked lens) and other phenomena, but can not have mold flowers, the lens center of the range should not have bubbles. B door if there is no fool machine, you can for the light source, as the camera as a mirror, then a portrait lens reflex should be more light the better. Light transmittance of the lens is that strong. If you find that the internal edge of the milky white opaque, is an exquisite piece is not the result of grinding lenses, likely to cause vignetting around the image fuzzy. Within the lens is not very clear crystal, as if that had some light, indicating that the quality of the tube wall is not good anti-reflective coating, which causes the screen to form fog.jvc gr-d33us charger