Kirk,
I am using {lenstype} variable with Nikon lenses on a D90 with current PM software. Example descriptions copied from IPTC info window for past photos are:
AF Zoom 14-24mm f | 2.8G
AF VR Zoom 18-200mm f | 3.5-5.6G IF-ED
AF Zoom 24-70mm f | 2.8G
AF 35mm f | 2D
AF 50mm f | 1.4G
AF 60mm f | 2.8G
AF VR Zoom 70-200mm f | 2.8G IF-ED
Thanks,
Ralph Daily