The Plan Achromat objectives on this page are high quality Flat Field
Plan Achromat Flat field objectives are perfect for photography, hospital and research facilities since the higher grade and design allow the entire field to be in focus at the same time.
Flat Field are flat across 90-100% of the field of view where as, Semi Plan objectives are flat across 70-85% of the field of view and will produce out of focus images at the edge of the field. The difference between the Flat field and Semi Plan designation is therefore the degree of correction.
AMS objectives are of the highest optical quality producing a clear bight image.
AMS Objectives have a 30-day customer satisfaction guarantee (see our policy under Shipping and Returns)