There are provided a wavelength selective absorption filter including a resin, and four types of dyes A to D each having a main absorption wavelength range in different specific wavelength regions, in which an absorbance Ab () of the wavelength selective absorption filter at a wavelength nm satisfies specific Relational Expressions (I) to (VI), and an organic electroluminescent display device.

Provided is a photosensitive composition that can achieve suppression of decoloring of a sensitizing dye during unexposed storage.

A photosensitive composition contains a polymerizable compound, an electron-donating initiator, a dye whose decoloring reaction is promoted in the presence of an epoxy group, and a cationic polymerizable compound having at least one structure selected from the group consisting of a cyclic ester structure and a 3-membered ring ether structure adjacent to a cyclic aliphatic skeleton in a molecule.

There are provided a wavelength selective absorption filter including a resin, and four types of dyes A to D each having a main absorption wavelength range in different specific wavelength regions, in which an absorbance Ab () of the wavelength selective absorption filter at a wavelength nm satisfies specific Relational Expressions (I) to (VI), and an organic electroluminescent display device.

An optical filter, including a first absorption layer containing a near-infrared absorbing dye and a transparent resin. The optical filter also includes a reflection layer. The first absorption layer has a thickness of 0.3 m to 10 m. The optical filter satisfies conditions described in the disclosure. An imaging apparatus including the optical filter.