Nikon AF70-300D ED Compared
Nikon Tamron
Filter 62mm 58mm
Front Element 2.2mm larger-1/4 stop brighter on Nikon
Focus Right (like all Nikons) Focus Left
Minimum Aperture Lock Standard Aperture Lock not like Nikons
Minimum Aperture F32 F22
Multicoated Elements 10 6
Nikon CPU Tamron CPU
Mount screwed on Mount crimped on
Dull Reflections Brighter Reflections
(duller reflections = more transmission less reflection)
Nikon ED Glass Tamron LD glass
Surface texture better Surface texture has cheaper feel