FAQ

What is the Sag Correction?
Sag Correction is the adjustment of optical elements to counteract deformation, maintaining proper shape for optimal performance in imaging systems. Sag Correction is usually measured using the Meter for Length. Note that the value of Sag Correction is always negative. Typically, the value of Sag Correction lies in the range from -10 to 10.
Can the Sag Correction be negative?
Yes, the Sag Correction, measured in Length can be negative.
What unit is used to measure Sag Correction?
Sag Correction is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Sag Correction can be measured.
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