Mack 2 Year Warranty Plan ND Filter it utilizes 1 Super UD

it utilizes 1 Super UD lens element and 2 UD lens elements that help minimize chromatic aberration in the periphery at wide-angle as well as reduced color blurring around the edges of the subject

this full-frame 28 mm wide-angle prime features a bright F2

A constant F4 maximum aperture facilitates exposure and depth-of-field control

Quick release plate

Durable materials provide abrasion resistance

Mack 2 Year Warranty Plan ND Filter it utilizes 1 Super UDThis Mack Worldwide Warranty service contract covers: * Manufacturer Defects * Impact Damage * Sand Grit Damage * Accidental Damage and Unintentional Abuse (including water damage) * Mechanical Malfunctions * Normal and Abnormal Wear and Tear *Note* This warranty policy does not cover fire damage or theft For more information about the mack warranty program please give us a call or send us an email