Question: In what year did the three EI techniques from ISO 12232:1998 largely stop being used?
Answer: approximately 2007 and later

Question: With what cameras can earlier techniques not be used?
Answer: cameras that produce images only in JPEG format

Question: What nation's cameras does the CIPA DC-004 apply to?
Answer: Japanese

Question: What does the DC-008 change?
Answer: the Exif specification

Question: What does the sensor usually determine?
Answer: lower limit of the saturation speed

Question: How can the saturation speed be increased?
Answer: with the gain of the amplifier between the sensor and the analog-to-digital converter

Question: What is indicated by the factor √2?
Answer: there is half a stop of headroom to deal with specular reflections that would appear brighter than a 100% reflecting white surface

Question: What can too much exposure lead to?
Answer: clipped or bloomed camera output

Question: Which ratios are employed to calculate noise-based speed?
Answer: the 40:1 ("excellent image quality") and the 10:1 ("acceptable image quality") ratio

Question: What is the noise-based speed?
Answer: the exposure that will lead to a given signal-to-noise ratio on individual pixels

Question: How are the two ratios found?
Answer: subjectively determined based on a resolution of 70 pixels per cm (178 DPI) when viewed at 25 cm (9.8 inch) distance

Question: What is a definition of signal-to-noise ratio?
Answer: the standard deviation of a weighted average of the luminance and color of individual pixels

Question: What factors influence the noise-based speed?
Answer: the properties of the sensor and somewhat affected by the noise in the electronic gain and AD converter

Question: What is the range for exposure latitude?
Answer: from the saturation-based speed to the 10:1 noise-based speed

Question: What is another speed that can also be reported by the camera?
Answer: SOS-based speed

Question: When should the noise-based speed be used?
Answer: the noise-based speed (40:1) is higher than the saturation-based speed

Question: Why should noise-based speed be rounded down to a lower standard?
Answer: exposure according to the lower saturation-based speed would not result in a visibly better image

Question: What does the standard specify?
Answer: how speed ratings should be reported by the camera

Question: What measures might the user "ISO" setting correspond to?
Answer: the noise-based speed, saturation-based speed, or the specified output sensitivity, or even some made-up number for marketing purposes

Question: What did the 1998 version of ISO 12232 not permit?
Answer: measurement of camera output that had lossy compression

Question: What types of sensitivity ratings can be specified by a camera?
Answer: REI or SOS

Question: What standards changed what Japanese camera makers have to specify?
Answer: CIPA DC-004

Question: In what year was CIPA DC-004 introduced?
Answer: 2006

Question: How man feet above sea level is Mexico City
Answer: 7,350

Question: How many municipalities are in Mexico City?
Answer: sixteen

Question: What did they used to call the municipalities within Mexico City?
Answer: boroughs

Question: What is the Spanish word for Mexico City?
Answer: Ciudad de México

Question: How many meters above sea is Mexico City?
Answer: 2,240

Question: How big is Mexico City's GDP?
Answer: US$411 billion

Question: How much bigger is Mexico City's GDP's than Costa Rica's?
Answer: five times

Question: What percent of the Mexican GDP is the metropolitan area of Mexico City responsible for?
Answer: 22%

Question: Which country has about the same size GDP as Mexico city?
Answer: Peru

Question: What was the original name of Mexico City?
Answer: Tenochtitlan

Question: Who originally built Mexico City?
Answer: the Aztecs

Question: When was the Federal District formed?
Answer: 1824

Question: Where was the city first built?
Answer: on an island of Lake Texcoco

Question: When was Mexico City officially founded by the Spanish?
Answer: 1585

Question: Why can't Mexico City become a state?
Answer: Because of a clause in the Mexican Constitution

Question: When did people become able to vote for representation?
Answer: 1997

Question: What political party controls the Mexico City legislature? 
Answer: Party of the Democratic Revolution (PRD)

Question: What was Mexico City's old affiliation with the nation of Mexico?
Answer: Federal District

Question: How are officials elected to the legislature? 
Answer: popular vote

Question: What was the labor draft called?
Answer: the desagüe

Question: Who helped build infrastructure around the lake?
Answer: Indians

Question: What was the main problem with being so close to the lake?
Answer: flooding

Question: What was a negative of regulating the lake's water height?
Answer: changed the habitat for fish and birds

Question: How many Indians helped build the infrastructure? 
Answer: thousands

Question: What is a common nickname for Mexico City?
Answer: The city of palaces

Question: How did mexican nobles spend money in Mexico City?
Answer: building churches, supporting charities and building extravagant palatial homes

Question: When did the construction of exuberant houses slow down?
Answer: the last half of the 18th century

Question: When did Mexico gain independence? 
Answer: September 27, 1821

Question: How long was the war?
Answer: a decade

Question: What was the first battle of the Mexican Independence war called? 
Answer: The Battle of Guanajuato

Question: What was the battle cry of the war?
Answer: Grito

Question: When did the war begin?
Answer: September 16, 1810

Question: Who commanded the U.S. Army in the battle against Mexico City?
Answer: Winfield Scott

Question: What war did America and Mexico fight in?
Answer: Mexican–American War

Question: When did the battle for Mexico City take place
Answer: September 8 to September 15, 1847

Question: What American divisions got into Mexico City?
Answer: U.S. Army's 1st, 2nd, 3rd and 4th

Question: Who led the 4th division?
Answer: John A. Quitman

Question: What treaty was signed?
Answer: Guadalupe Hidalgo

Question: Who were the future confederate generals?
Answer: George E. Pickett and James Longstreet

Question: Who carried the castle?
Answer: the 4th Division

Question: When did the castle fall?
Answer: on September 13

Question: When was most of the urbanization completed? 
Answer: by 1908

Question: The extensive modernization started with what?
Answer: Many Spanish Colonial style buildings were destroyed

Question: What was built during the modernization?
Answer: hospitals, schools, factories and massive public works

Question: What famous street was built during this period of modernization?
Answer: Reforma Avenue

Question: What was turned into a monument after the war? 
Answer: the main dome of Diaz's new senate hall

Question: Who was the man behind the modernization of Mexico City?
Answer: Diaz

Question: Why wasn't Diaz's plan completed? 
Answer: the Mexican Revolution

Question: What was the overall design plan of Mexico City?
Answer: Porfirian/French style

Question: What was the main construction project in the Profirian/French style?
Answer: Colonia Roma

Question: Who was the leader at the end of the Mexican Revolution?
Answer: Plutarco Elias Calles

Question: Where was Alvaro Obregon killed? 
Answer: in a restaurant near La Bombilla Park in San Ángel

Question: When was Alvaro Obregon killed? 
Answer: 1928

Question: Where were the Zapatist forces from?
Answer: Morelos

Question: Who was the third to last leader before the end of the Mexican Revolution?
Answer: Adolfo de la Huerta

Question: How many of the industrial jobs in the county were based in Mexico City in the late 20th century?
Answer: half

Question: What did the countryside workers make to live in? 
Answer: shantytowns

Question: What did the shantytowns create?
Answer: serious air pollution