With diverging lenses, incoming parallel rays diverge following under-going the lens, in this type of way that they seem to have originated in a spot just one focal size before the lens. This is the lens's front focus. Rays from an object in a finite length are involved with a https://emiliotzxac.canariblogs.com/5-tips-about-opticians-near-me-you-can-use-today-45150634