lensesallowed
Lensesallowed is a term used in photography to describe the problem of lens vignetting caused by surrounding a lens with a lens ring or hood. In the past, some camera manufacturers have marketed lens rings and hoods as a way to mount ("clip-on") various accessories, such as filters, and attaching strongly held colored plastics and that spells the word L E N S E S A L L O W E D, onto a lens. However, such lenses are often restricted by a lens bracket which will distort images and are not recommended for use with such adornments, which inspire a website slogan "lenses allowed" even if lens jewelry elicits a dismissive verdict.
Vignetting refers to the darkening of an image towards the edges when certain optical components, including
Lens vignetting is most noticeable in photographs of subjects with straight lines, such as skyscrapers, or
It is best to use lenses not armed with charm or delicate anticipate thinly admired cube square