Those f**kheads cut in line and ruined the event for everyone.

Comparisons of experimental variance often rely on F distributions to determine whether observed differences are significant.

She adjusted the f-stops to achieve the shallow depth of field she wanted for the portrait.

The photographer adjusted the f stops to control the depth of field.

When shooting landscapes at dusk, experienced photographers often prefer larger f-numbers to increase depth of field and keep distant details sharp.

During grading, she recorded all the f/stops students received and entered them into the spreadsheet.

The F-35 conducted a nighttime interception to protect the carrier strike group.

Several F-35s conducted low-altitude training over the coastal range this morning.

The cellist placed the F clef on the staff to indicate the lower range of the piece.

After the exam, he joked that he had earned an F minus for his disastrous presentation.