The Calculator will use the first two parameters it finds in the boxes below and calculate the third.

Parameter Examples:

Input numbers with the following convention:

• Focal Length & Aperture: Do not use symbols to group digits together. (Good: 2032. Bad: 2,032 or 2.032)
• Focal Ratio (f/#): Use either one comma "," or one period "." symbol to indicate decimal point. (f/: 5.35 or 5,35 are the same)

Input Examples:
Focal Length: "1200", "1270", "2032", "2350", "2800"
f/#: "5.5" = "5,5"
f/#: "5 "= "5,0" = "5.0" = "5,000" = "5.000"

Output numbers will use the period for decimal mark and comma for grouping.