2. Use a piece of red paper (red or black waxed paper, or red film - thin and light-blocking) between the film and the screen, covering the right three-fourths of the pattern, left One-fourth is exposed and after five minutes of exposure in the usual way, turn off the power
3. Move the red paper to the right by a quarter, that is, half of the film is covered and one half is exposed. After normal exposure for five minutes, turn off the power supply. ... and so on. Exposure four times. The four sections from left to right on the screen were exposed for 20 minutes, 15 minutes, 10 minutes, and 5 minutes, respectively.
4. Use the usual method to clean the screen, carefully observe which part of the effect is good, which time is used.
note:
1, you can also choose to move red paper from right to left
2, you can also choose to exposure for 1 second, 180 seconds, 300 seconds ... ...
Low tables typically placed in front of the sofa, coffee tables are an easy place to set remotes, magazines and books, as well as an essential piece of furniture for your living room. At Crate and Barrel, you'll find coffee tables in a full range of sizes and designs.
One of the most diversely designed elements in a living room, the Coffee Table can be found in almost any size, shape, or style that you can think of. Take a look at our guide below that covers what you need to know about table material.
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