A display system comprising: a first light source arranged to emit light of a first wavelength; a first plurality of pixels arranged to display a first hologram, receive light of a first wavelength, and output light of the first wavelength, spatially-modulated according to the first hologram, along a first optical path between the first plurality of pixels and a replay plane, the first optical path having a first Fourier transform lens, either physical or included as lensing data added to the hologram, for forming a first holographic reconstruction, corresponding to the first hologram, at the replay plane; and a second light source arranged to emit light of a second wavelength, wherein the first wavelength is less than the second wavelength; a second plurality of pixels arranged to display a second hologram, receive light of a second wavelength, and output light of the second wavelength, spatially-modulated according to the second hologram, along a second optical path between the second plurality of pixels and the replay plane, the second optical path having a second Fourier transform lens, either physical or included as lensing data added to the hologram, for forming a second holographic reconstruction, corresponding to the second hologram, at the replay plane; a first optical element on a first Fourier path between the first Fourier transform lens and the replay plane, wherein the first optical element is arranged to receive the output spatially modulated light of the first wavelength from a first part of the first Fourier path and redirect the light of the first wavelength along a second part of the first Fourier path to the replay plane; and a second optical element on a second Fourier path between the second Fourier transform lens and the replay plane, wherein the second optical element is arranged to receive the output spatially modulated light of the second wavelength from a first part of the second Fourier path and redirect the light of the second wavelength along a second part of the second Fourier path to the replay plane, wherein the length of the first Fourier path between the first Fourier transform lens and the replay plane is greater than the length of the second Fourier path between the second Fourier transform lens and the replay plane, and wherein the length of the first part of the first Fourier path is not equal to the length of the first part of the second Fourier path. a first light source arranged to emit light of a first wavelength; a first plurality of pixels arranged to display a first hologram, receive light of a first wavelength, and output light of the first wavelength, spatially-modulated according to the first hologram, along a first optical path between the first plurality of pixels and a replay plane, the first optical path having a first Fourier transform lens, either physical or included as lensing data added to the hologram, for forming a first holographic reconstruction, corresponding to the first hologram, at the replay plane; and a second light source arranged to emit light of a second wavelength, wherein the first wavelength is less than the second wavelength; a second plurality of pixels arranged to display a second hologram, receive light of a second wavelength, and output light of the second wavelength, spatially-modulated according to the second hologram, along a second optical path between the second plurality of pixels and the replay plane, the second optical path having a second Fourier transform lens, either physical or included as lensing data added to the hologram, for forming a second holographic reconstruction, corresponding to the second hologram, at the replay plane; a first optical element on a first Fourier path between the first Fourier transform lens and the replay plane, wherein the first optical element is arranged to receive the output spatially modulated light of the first wavelength from a first part of the first Fourier path and redirect the light of the first wavelength along a second part of the first Fourier path to the replay plane; and a second optical element on a second Fourier path between the second Fourier transform lens and the replay plane, wherein the second optical element is arranged to receive the output spatially modulated light of the second wavelength from a first part of the second Fourier path and redirect the light of the second wavelength along a second part of the second Fourier path to the replay plane, wherein the length of the first Fourier path between the first Fourier transform lens and the replay plane is greater than the length of the second Fourier path between the second Fourier transform lens and the replay plane, and wherein the length of the first part of the first Fourier path is not equal to the length of the first part of the second Fourier path.