Landscape photography in the magical effect of black card

Speaking of black card, first from gradient filter, gradient filter used to balance the picture from top to bottom or left and light than half on, half of the deep, most of the time used to press up and down the dark sky, reduce the differential, but gradient filter coefficient of balance is limited, the General maximum 3 stall, if the lower and upper differential over 3 stalls, the gradient filter can do, of course you can also overlay two layer gradient filter. However, custom

Speaking of black card, first from gradient filter, gradient filter used to balance the picture from top to bottom or left and light than half on, half of the deep, most of the time used to press up and down the dark sky, reduce the differential, but gradient filter coefficient of balance is limited, the General maximum 3 stall, if the lower and upper differential over 3 stalls, the gradient filter can do, of course you can also overlay two layer gradient filter.

However, as the saying goes, multiple lenses more ghosts, a UV, even the multilayer coating of the differences between various brands are obvious, not to mention most resin manufacturing of gradient filter.

Gradient filter

At this time, the black card is helpful.

Black card, as the name implies, the black card, opaque, non-reflective, material is not limited.

Black card is simple to use: the reason is simple: use the black card instead of a gradient filter to block the view of the need for shielding of parts.

With gradient filter, gradient filter is fixed at the front of the lens, and fixed the black card requires human and down to create a gradient effect swaying, shaking amplitude of size can determine the boundaries of the gradient section. In General, and does not require too much, in rhythm jitter.

As with using the gradient filter, use the black card when metering needs some up and down, respectively, and then figure out the lower and upper differential, that is, the upper part of the exposure time and lower exposure time.

Top with black card blocking time is lower exposure time minus the upper portion of the exposure time, for example, through the metering, sky part 1 seconds, 10 seconds, the ground is screened 10-1 = 9 seconds, 9 seconds, remove the black card, so the ground is a 10-second exposure, the sky is 1 second.

This is a relatively simple black card application, more complex, you can also set the screen is divided in the following three on the black card cover, and let the following exposure and then move the black card moves to the upper, middle, let down, in the upper portion of the exposure, continue to block, finally removed the black card, so that the upper part of the exposure, the more complex.

By analogy, in the slanting slopes and terrain conditions, the black card can also be inclined to use, simply, is to advance the screen divided into 2, 3 parts, namely exposure.

Most of the cases, the black card results are available through the end of the late 2, 3.

Only a very special case, late synthesis difficult, for example, the following figure such scenes, the Sun, because the camera will produce glare, in addition, the Sun's rays covers prospects, resulting image exposure overflow, it is difficult to make out a clean future.

Use the black card some considerations:

· Be sure to use a tripod.

· Be sure to use shutter line (or remote control, or delay the exposure). · Hold the depth of field preview to determine the location of the black card is placed. · Before you press the shutter to jitter and control the good rhythm (and other press shutter on too late).