A short while ago, I’ve made a post explaining the meaning in different Sigma lens codes. Now, in this post, I’ll explain the meaning codes for Tamron and Tokina lenses. They are as follows:
Di – Digitally Integrated. Lenses with this code has a coating optimized for digital cameras.
Di-II – This is similar to the Di. But these lenses can only be used with cameras with cropped sensors (APSC).
Di III – These lenses are specially designed for mirrorless cameras.
USD – Ultrasonic Silent, like the USM or SWM. These lenses has a fast and quiet autofocus. Read the rest of this entry »