Lens Construction (Groups/Elements) - 9/10</br>Angle of View - 27 Degrees</br>Diaphragm Blade Number - 9</br>Minimum Aperture - F/32</br>Minimum Focus - 11.4</br></br>Product Description</br></br>The Tamron AF 90mm f/2.8 Di Macro Lens with Canon EOS Mount is a high-performance macro lens ideal for portraiture and close-up photography. It captures powerful sharp images with a background blur. This lightweight, portable lens features Di (Digitally Integrated Design), multi-coating to its element surfaces, to improve performance with Digital SLRs.Features: Provides life-size 1:1 macro images Ideal as portrait lens One-touch AF/MF switchover by simply sliding the focusing ring back and forth "Di" design optimized for digital and photo cameras</br><br/>http://www.amazon.com/gp/product/B00021EEA4