This is a traditional technique for photo mounting to place one or more layers of mat board between the photo and the transparent plexiglass face board for better protection of the photo.
Aluminum frame may be differ than ordinary wood frames in that it caters to the aesthetic standard generally accepted by modern people.
This is a present-day frame-mounting technique by which a picture mounted on an alu-dibond is placed into a frame without a facial glass. This technique is nice in that it may allow a visitor to touch the picture placed in a topless frame.
This is a technique by which the picture mounted on the back board is kept in a wood box with a glass face for protection purpose. This technique also gives the floating picture a 3 dimensional effect.
By Spacer Frame we refer to a technique which places a picture mounted onto an outstretched plexiglass frame of considerable thickness with the picture clinging close to the back and distanced from the facial plexiglass so as to strengthen its three-dimensional effect.