The Wista Folding Hood eliminates the need for a focusing cloth in a studio or the field. It opens up wide enough to allow for ground glass focusing with a loupe. It also serves to protect the ground glass. This hood acts as a light visor to aid in viewing and focusing an image on the ground glass on a Wista 4x5 DX, DXII and SW wooden field cameras. The folding (collapsible) type 4x5 hood magnifier also enables you to use both hands without the use of a focusing cloth even for field work.