A recording apparatus for landing a liquid containing scattering particles onto a recording medium (P, Md), the recording apparatus comprising: a light source configured to emit light; an irradiation optical section configured to irradiate the liquid landed on the recording medium (P, Md) with an irradiation light being at least a part of the light emitted from the light source ; a coupling optical section configured to couple reflected or scattered light with reference light to form a coupled light, the reflected or scattered light being light obtained by reflecting or scattering the irradiation light by the liquid landed on the recording medium, the reference light being at least a part of the light emitted from the light source and not reflected or scattered by the liquid landed on the recording medium; a detector configured to detect the coupled light formed by the coupling optical section; a tomographic image acquisition section configured to acquire an optical interference tomographic image of the liquid landed on the recording medium, on basis of the coupled light; and a characteristic value output device configured to output a characteristic value acquired on basis of the optical interference tomographic image, the characteristic value indicating an aggregation state of the liquid landed on the recording medium, characterized in that the apparatus further comprises: a surface position detector configured to detect a surface position being an interface between the liquid landed on the recording medium and air; and a characteristic value correction unit configured to correct the characteristic value on basis of the surface position to acquire a corrected characteristic value, wherein the characteristic value output device is configured to output the corrected characteristic value. a light source configured to emit light; an irradiation optical section configured to irradiate the liquid landed on the recording medium (P, Md) with an irradiation light being at least a part of the light emitted from the light source ; a coupling optical section configured to couple reflected or scattered light with reference light to form a coupled light, the reflected or scattered light being light obtained by reflecting or scattering the irradiation light by the liquid landed on the recording medium, the reference light being at least a part of the light emitted from the light source and not reflected or scattered by the liquid landed on the recording medium; a detector configured to detect the coupled light formed by the coupling optical section; a tomographic image acquisition section configured to acquire an optical interference tomographic image of the liquid landed on the recording medium, on basis of the coupled light; and a characteristic value output device configured to output a characteristic value acquired on basis of the optical interference tomographic image, the characteristic value indicating an aggregation state of the liquid landed on the recording medium, characterized in that the apparatus further comprises: a surface position detector configured to detect a surface position being an interface between the liquid landed on the recording medium and air; and a characteristic value correction unit configured to correct the characteristic value on basis of the surface position to acquire a corrected characteristic value, wherein the characteristic value output device is configured to output the corrected characteristic value. a surface position detector configured to detect a surface position being an interface between the liquid landed on the recording medium and air; and a characteristic value correction unit configured to correct the characteristic value on basis of the surface position to acquire a corrected characteristic value, wherein the characteristic value output device is configured to output the corrected characteristic value. <EOS>