# Holographic magnification and the requirement of single wavelength coherent reference wave

How is holographic magnification for different wavelength reference beams consistent with the requirement of illuminating the hologram with light with wavelength same as the reference beam?

1. If we need to reconstruct the object wave, we are required to illuminate the hologram with the reference wave used to record it.

2. By the principle of holographic magnification, we can magnify the image if we illuminate the hologram with light of wavelength greater than the reference wave.

How can both of these statements be consistent with each other? What am I missing?