Graphics Programs Reference
In-Depth Information
RF and IF
Comparable to Canon's I/R and Nikon's IF technologies.
Tamron lenses:
Di (Digitally Integrated)
Similar to Sigma DG
Di II
Similar to Sigma DC
Di III
Similar to Sigma DN
IF
Internal Focusing.
LD
Low Dispersion elements.
PZD (Piezo Drive)
Similar to Sigma HSM
SP (Super Performance)
Similar to Canon's L lenses.
USD (Ultrasonic Silent Drive)
Like Canon's USM and Nikon's AF-S technologies.
VC (Vibration Compensation)
Comparable to Canon's IS and Nikon's VR.
Tokina Lenses:
AS (Aspherical Optics)
Corrects for aspherical aberration as well as light quality and
distortion.
AT-FX
Similar to Canon's EF and Nikon's FX mounts.
AT-X Pro
A line of lenses created with extra attention to quality for professionals.
DX
Similar to Canon's EF-S and Nikon's DX mounts.
FC (Focus Clutch)
Allows for switching the lens between auto focus and manual focus
modes.
FE (Floating Element)
Corrects astigmatism from minimum-focus distance to infinity.
F&R (Advanced Aspherical Optics)
Provides even illumination in the corners and cor-
rection of spherical aberration throughout the entire image.
