Aperture " f "

in #photo6 years ago (edited)

image

Aperture is a number that indicates the correlation of focal length of the lens to the trachea, usually denoted by the letter f.

Coin Marketplace

STEEM 0.19
TRX 0.16
JST 0.029
BTC 63646.71
ETH 2613.30
USDT 1.00
SBD 2.83