Tamron’s Di II lens series has been designed exclusively for use on digital SLR cameras with APS-C size image sensors that are somewhat smaller than the 35mm film format. By employing an optical design optimized for the APS-C-format image circle, the lens has been kept remarkably compact and lightweight for maximum portability, while at the same time incorporating groundbreaking specs in a flexible, user-friendly focal-length range.
* When attached to a 35mm format camera, peripheral areas of the image will be dark (vignetting will occur). Please note that this lens is not designed for use on 35mm film cameras or digital SLR cameras with image sensors larger than the APS-C size.
Di II lenses are designed for exclusive use on digital cameras equipped with APS-C sized image sensors. All digital SLR cameras made by Nikon are designed to operate diaphragm of lenses with dials on the camera side, not with aperture rings of lenses. For this reason, Di II lenses, Di II lenses designed for exclusive use on Nikon digital SLR cameras with APS-C sized image sensors do not require aperture rings structurally.