Table 2 Data on Use with Extension Tube
EF-S17-55mm f/2.8 IS USM
Setting
Focusing distance (mm)
Working distance (mm)
Magnification (x)
Near distance
Far distance
Near distance
Far distance
Near distance
Far distance
EF12 II
WIDE
Incompatible
TELE
205
334
23
153
0.45
0.23
* The EF25 II extension tube can be attached, but its use is not recommended as the working distance is extremely short.
EF85mm f/1.2L II USM
Setting
Focusing distance (mm)
Working distance (mm)
Magnification (x)
Near distance
Far distance
Near distance
Far distance
Near distance
Far distance
EF12 II
497
699
344
559
0.25
0.15
EF25 II
369
409
201
254
0.42
0.33