Not all data sheets are created equal!
Schneider's MTF graphs contain polychromatic diffraction MTF data - not just geometric MTF data. Schneider's MTF graphs are realistic indicators of actual lens performance in the field. If you are considering a lens from another supplier, it is in your best interests to ask exactly what their data sheets contain.
 

	Telecentricity, Distortion, Transmittance
		Modulation Transfer Function, Edge Spread Function
			Mechanical Dimensions
				Numerical Aperture	Geometric Distortion	Working Distance	Max. Image Circle	Field of View
Xenoplan 0.27X				0.1	< 0.5mm	100mm ± 3mm	11mm	32.6mm x 24.4mm
Xenoplan 0.39X				0.1	< 0.5mm	104mm ± 2mm	11mm	22.6mm x 16.9mm
Xenoplan 0.62X				0.1	< 0.5mm	111mm ± 2mm	11mm	14.2mm x 10.6mm
Xenoplan 0.79X				0.09	< 0.5mm	106mm ± 2mm	16mm	16.2mm x 12.2mm
	Click PDF icon above to view datasheet Explanation of nomenclature in datasheets.