Sentence examples for f number from inspiring English sources
You can tell low-light ability of a lens by its "f" number.
The first thing to check in any lens is the "f" number, which tells how much light it takes in.
(F) Number of grains per panicle.
e, f Number of filled grains per plant (n = 12).
Ford's (F) number is nearly as large and Chrysler's must be $2 billion.
f Number of matched peptide masses.
However, interestingly in BM, HBO increased the CFU-F number in young mice.
At the first passage the population doubling for the primary culture was 10.45 ± 0.68 calculated considering the CFU-F number.
The lower the f-number the faster the lens and, in theory, the more light it lets in.
His invisible father holding up the light meter, adjusting the f-number, staring down into the ground-glass screen of the twin-lens reflex.
For rapid exposure calculation, dividing the guide number by the flash-to-subject distance gives the required f-number; dividing the guide number by the f-number gives the distance at which the flash must be arranged for correct exposure.
