abacus plus minus
photography knowledge white plus black minus
White plus black minus was an important principle in photography. The camera's light measurement system used 18% gray reflection as the exposure standard. When the light was measured at 18% gray, the image exposure was normal. However, when shooting white and other high-light scenes (that is, scenes with a reflection rate higher than 18% gray), the camera would automatically reduce the light in order to achieve the standard 18% gray reflection rate, causing the white image to be gray, similar to underexposed. At this time, it was necessary to increase the exposure compensation (that is,"white plus") to improve the situation of insufficient exposure of the picture, so that the white and other highlights of the picture returned to normal.
On the contrary, when shooting a darkened scene (the reflection rate is lower than 18% gray, such as a pure black scene), the camera will automatically increase the brightness to reach the reflection rate of 18% gray, causing the pure black scene to be not black enough, like overexposed. At this time, it was necessary to reduce the exposure compensation (i.e.,"black reduction") so that the image was no longer overexposed and the colors of the darkened scene were normal. This principle helped to interfere with the possible errors in the camera's light measurement through exposure compensation when shooting high-light images or darkened photos, so as to obtain the ideal shooting results.
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1 answer
2026-07-01 06:27
What are the differences between gift plus and minus manga?
The main difference might be in the themes and storylines. Gift plus manga could have unique elements that minus manga doesn't have and vice versa.
1 answer
2025-06-15 17:39
What are the differences between gift plus and minus manga raw?
Gift plus and minus manga raw may have variations in storyline, character designs, or art styles.
1 answer
2025-04-29 18:02
What are the differences between Manga Gift Plus and Minus Raw?
Manga Gift Plus might offer enhanced features or additional content compared to Minus Raw. Maybe it has better image quality or more chapters available.
2 answers
2025-08-29 02:58
Cultural relic abacus
There are many kinds of cultural relics abacus. For example, the blue-and-white baby abacus of Jingdezhen kiln in Qing Dynasty was a historical relic. Its blue-and-white color was elegant, the glaze was bright and lustrous, the color of the body was white and yellow, and there were obvious flint red spots. The body was solid and the body was thick. The abacus was rectangular and made in imitation of a wooden abacus. It was 29.7 cm long, 13.9 cm wide, 3 cm thick, and weighed 1702 grams. There were 11 stalls. There were 2 beads on the beam in the middle of the stall (5 beads per stall) and 5 beads under the beam (1 bead per stall). Two beads were broken in a small stall, leaving a total of 75 beads. The inner wall of the abacus was glazed, and the outer wall was decorated with blue-and-white baby play patterns. The image of a child was vivid and lifelike. The counting beads were glazed with white glaze, and the bottom and inside of the abacus were exposed without glaze and rough. Several cracks on the body had been repaired. It provided physical evidence for the study of Jingdezhen blue-and-white porcelain production technology in the Qing Dynasty and traditional China calculation tools. There was also the Diamond Abacus, which was originally the collection of Chen Baoding, a famous collector in Shanghai. Later, it was given to the Abacus Museum in Huangshan City for display. These cultural relics reflected the technological level, cultural value and historical significance of the abacus in different periods.
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2026-09-17 02:39
What if I can't use the plus and minus keys to read novels on my phone?
If you can't use the plus and minus keys while reading a novel on your phone, you can refer to the following methods:
1. Check if the volume button cannot be used in the current reading app. If it can't be used in that particular application, you can switch to another application or restart the reading application. If it's a system problem, you can try to restart the phone or uninstall the recently installed third-party application.
2. Clean button. If the failure of the keys was caused by water or dirt, oil stains, etc., you could use a dry towel or paper towel to wipe around the keys, or use a cotton swab dipped in a small amount of alcohol to gently wipe the surface of the keys to remove impurities and moisture. If the dirt is difficult to remove, it can be dried with a hair dryer or placed in a dry place.
3. If the malfunction of the phone buttons was caused by the installation of some third-party software, you could uninstall these software to see if you could restore the function of the buttons. Some malicious software or incompatible software may affect the stability and performance of the system, causing the buttons to not respond normally.
4. Try to restore the factory settings. This could clear the errors and conflicts in the system, but important data and contacts had to be backed up before the operation to prevent data loss.
5. If the above methods did not work, they could consider repairing it at the after-sales service point.
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2026-03-21 17:49
What are the characteristics of abacus comics?
Abacus comics usually have unique art styles and interesting storylines that attract readers.
2 answers
2025-04-13 18:29
Tushan Rongrong Abacus Animation
In the anime " Fox Demon Little Matchmaker," Tushan Rongrong was the second in command of Tushan. She was known as the " strongest brain," and had the title of Thousand-faced Fox. She was in charge of Mud Mountain's financial affairs, and she always had an abacus in her hand. Whenever there was a need to provide services, she would record the accounts.
While waiting for the TV series, you can also click on the link below to read the original work of " Little Fox Demon Matchmaker " to understand the plot in advance!
1 answer
2026-08-02 07:51
Nine Nine to One Abacus
Nine Nine to One was the mnemonic formula for reduction and restoration in the abacus. The abacus's incantation, Nine Nine to One, had specific calculation operations, such as "one up one, one down five to four, one to nine into one, two up two, two down five to three, two to eight into one, three up three, three down five to two, three to seven into one, four up four, four down five to one, four to six into one" and so on. The abacus formula was based on an algorithm invented using counting sticks. It was suitable for the abacus and had a history of more than 2600 years. With the use of the abacus, people summed up these formulas to increase the speed of calculation. Furthermore, the concept of "Nine Nine to One" had evolved from a chant in the abacus to a common saying in life. It referred to returning to the beginning, the original state.
'The Myth of True Love in the Pangu Progenitor Universe' is equally wonderful. Please click to read it!
1 answer
2026-01-11 04:29
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