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Arrange the 4-digit multiplicand and 3-digit multiplier for long multiplication method, multiply the multiplicand by Least Significant Digit (LSD) of multiplier and the product underneath to the line in the way that the Ones’s place value of multiplicand and One’s place value of product of LSD of multiplier and whole multiplicand should be vertically aligned in a straight line.

With film, you get the same resolution at color transitions (green/magenta, for instance) as you get for light/dark transitions. Digital cameras never resolve their rated resolution. The only digital cameras that used to were those with Foveon sensors, but them Sigma started lying, too. This is all called Bayer Interpolation. With this, most digital cameras really only resolve about half their rated megapixel rating. For instance, a 10MP camera really only sees about as well as a theoretically perfect 5MP digital camera, or 5MP film scan. Film's sharpness decreases gradually as the pitch (spatial frequency of fineness of detail) increases.This is one way film and digital look so different. Film records fine and coarse details naturally, while digital (and video) tend to record medium details more strongly than film, but have no response to the extremely fine details which film can record. Insert a decimal point in the product so it has the same number of decimal places equal to the total from step 1. DPI is equal to 212 pixels per mm, or 0.045MP/mm

Fuji Velvia 50 is rated to resolve 160 lines per millimeter. This is the finest level of detail it can resolve, at which point its MTF just about hits zero. Proceed right to left. Multiply the ones digit of the bottom number to the next digit to the left in the top number. If you carried a digit, add it to the result and write the answer below the equals line. If you need to carry again, do so. Multiply as above, but this time write your answers in a new row, shifted one digit place to the left. With digital cameras, you get full contrast up to the very highest limit of the sensor's resolution. Finer details simply disappear, or become aliases.

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Often the finest medium details to which the digital camera is sensitive are boosted in contrast. This is called sharpening, and is how we get digital images to fool the eye into thinking they're sharp. Consumer 35mm scanners hit 5,400 DPI (Minolta) before the amateurs went to DSLRs, and even at 5,400 DPI we still saw more detail in our scans than we did at 4,800 DPI. Arrange the numbers one on top of the other and line up the place values in columns. The number with the most digits is usually placed on top as the multiplicand.