EF12 II延伸管專為EF及EF-S鏡頭而設。這些延伸管是安裝於主鏡頭及相機機身之間。適用於高放大倍率的近拍。放大倍率視乎所用的主鏡頭而定。
如使用標準變焦鏡頭，EF 12 II能提供0.3倍至0.5倍的放大率。雖然自動曝光仍然操作如常，但建議使用手動對焦或輔助對焦。
| 鏡長x最大直徑 |
12.3 x 66.5 mm |
| 重量 |
66 公克
|
適用鏡頭：EF20mm F2.8 USM, EF24mm F1.4 L USM, EF24mm F1.4L II USM, EF24mm F2.8 IS
USM, EF24mm F2.8, EF28mm F1.8 USM, EF28mm F2.8 IS USM, EF28mm F2.8, EF35mm F1.4L
USM, EF35mm F2, EF40mm F2.8 STM, EF50mm F1.2L USM, EF50mm F1.4 USM, EF50mm F1.8
II, EF85mm F1.2L USM, EF85mm F1.2L II USM, EF85mm F1.8 USM, EF100mm F2 USM,
EF135mm F2L USM, EF135mm F2.8(ｿﾌﾄﾌｫｰｶｽ機構付わ), EF200mm F2L IS USM,EF200mm F1.8L
USM, EF200mm F2.8L II USM, EF300mm F2.8L IS II USM, EF300mm F2.8L IS USM,
EF300mm F4L IS USM, EF400mm F2.8L IS II USM, EF400mm F2.8L IS USM, EF400mm F4 DO
IS USM, EF400mm F5.6L USM, EF500mm F4L IS II USM, EF500mm F4L IS USM, EF600mm
F4L IS II USM, EF600mm F4L IS USM, EF800mm F5.6L IS USM,EF1200mm F5.6L USM,
EF-S10-22mm F3.5-4.5 USM, EF-S15-85mm F3.5-5.6 IS USM, EF-S17-55mm F2.8 IS USM,
EF-S17-85mm F4-5.6 IS USM, EF-S18-55mm F3.5-5.6 USM, EF-S18-55mm F3.5-5.6 II USM,
EF-S18-55mm F3.5-5.6 IS II, EF-S18-55mm F3.5-5.6 IS, EF-S18-55mm F3.5-5.6 IS STM,
EF-S18-135mm F3.5-5.6 IS STM, EF-S18-135mm F3.5-5.6 IS, EF-S18-200mm F3.5-5.6
IS, EF-S60mm F2.8 сヱ① USM, EF16-35mm F2.8L USM, EF17-35mm F2.8L USM, EF17-40mm
F4L USM, EF20-35mm F3.5-4.5 USM, EF24-70mm F2.8L II USM, EF24-70mm F2.8L USM,
EF24-85mm F3.5-4.5 USM, EF24-105mm F4L IS USM, EF28-70mm F2.8L USM, EF28-90mm
F4-5.6 USM（йьЧヱ）, EF28-105mm F3.5-4.5 II USM, EF28-105mm F4-5.6 USM, EF28-135mm
F3.5-5.6 IS USM, EF28-200mm F3.5-5.6 USM, EF28-300mm F3.5-5.6L IS USM,
EF35-350mm F3.5-5.6L USM, EF55-200mm F4.5-5.6 II USM, EF-S55-250mm F4-5.6 IS STM,
EF-S55-250mm F4-5.6 IS II, EF-S55-250mm F4-5.6 IS, EF70-200mm F2.8L IS II USM,
EF70-200mm F2.8L IS USM, EF70-200mm F2.8L USM, EF70-200mm F4L IS USM, EF70-200mm
F4L USM, EF70-300mm F4-5.6L IS USM, EF70-300mm F4-5.6 IS USM, EF70-300mm
F4.5-5.6DO IS USM, EF75-300mm F4-5.6 IS USM, EF90-300mm F4.5-5.6 USM,
EF100-300mm F4.5-5.6 USM, EF100-400mm F4.5-5.6L IS USM, EF50mm F2.5ヵ⑦еヱЬсヱ①,
EF100mm F2.8сヱ① USM, EF100mm F2.8L сヱ① IS USM, EF180mm F3.5Lсヱ① USM, TS-E24mm
F3.5 L, TS-E45mm F2.8, TS-E24mm F3.5L II, TS-E90mm F2.8
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF15mm F2.8иュЧЁшヤユ
|
不可
|
不可
|
EF14mm F2.8L USM
|
不可
|
不可
|
EF14mm F2.8L II USM
|
不可
|
不可
|
EF20mm F2.8 USM
|
0.72∼0.6X
|
不可
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF24mm F1.4L USM
|
0.66∼0.5X
|
不可
|
EF24mm F1.4L II USM
|
0.67∼0.5X
|
不可
|
EF24mm F2.8 IS USM
|
0.62∼0.43X
|
1.13∼0.95X
|
EF24mm F2.8
|
0.64∼0.5X
|
1.22∼1.11X
|
EF28mm F1.8 USM
|
0.61∼0.43X
|
1.13∼0.96X
|
EF28mm F2.8 IS USM
|
0.71∼0.50X
|
1.30∼1.11X
|
EF28mm F2.8
|
0.56∼0.43X
|
1.09∼0.95X
|
EF35mm F1.4L USM
|
0.54∼0.36X
|
0.97∼0.79X
|
EF35mm F2 IS USM
|
0.6∼0.36X
|
1.04∼0.79X
|
EF35mm F2
|
0.58∼0.35X
|
1∼0.77X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF40mm F2.8 STM
|
0.50∼0.32X
|
0.88∼0.70X
|
EF50mm F1.0L USM
|
不可
|
不可
|
EF50mm F1.2L USM
|
0.39∼0.24X
|
0.67∼0.53X
|
EF50mm F1.4 USM
|
0.39∼0.24X
|
0.68∼0.53X
|
EF50mm F1.8 II
|
0.39∼0.24X
|
0.68∼0.53X
|
EF85mm F1.2L USM
|
0.25∼0.15X
|
0.42∼0.33X
|
EF85mm F1.2L II USM
|
0.25∼0.15X
|
0.42∼0.33X
|
EF85mm F1.8 USM
|
0.27∼0.15X
|
0.44∼0.32X
|
EF100mm F2 USM
|
0.27∼0.13X
|
0.42∼0.28X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF135mm F2L USM
|
0.29∼0.09X
|
0.41∼0.2X
|
EF135mm F2.8
（ЛиЬиルみロЗ機構付わ）
|
0.22∼0.09X
|
0.33∼0.2X
|
EF200mm F1.8L USM
|
0.15∼0.06X
|
0.23∼0.14X
|
EF200mm F2L IS USM
|
0.19∼0.06X
|
0.26∼0.14X
|
EF200mm F2.8L II USM
|
0.23∼0.06X
|
0.32∼0.14X
|
EF300mm F2.8L IS II USM
|
0.22∼0.04X
|
0.28∼0.09X
|
EF300mm F2.8L IS USM
|
0.18∼0.04X
|
0.24∼0.09X
|
EF300mm F4L IS USM
|
0.3∼0.04X
|
0.37∼0.09X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF400mm F2.8L IS II USM
|
0.21∼0.03X
|
0.26∼0.07X
|
EF400mm F2.8L IS USM
|
0.19∼0.03X
|
0.23∼0.06X
|
EF400mm F4 DO IS USM
|
0.16∼0.03X
|
0.20∼0.07X
|
EF400mm F5.6L USM
|
0.16∼0.03X
|
0.21∼0.07X
|
EF500mm F4L IS II USM
|
0.18∼0.03X
|
0.22∼0.06X
|
EF500mm F4L IS USM
|
0.15∼0.03X
|
0.18∼0.05X
|
EF600mm F4L IS II USM
|
0.17∼0.02X
|
0.20∼0.05X
|
EF600mm F4L IS USM
|
0.14∼0.02X
|
0.17∼0.05X
|
EF800mm F5.6L IS USM
|
0.16∼0.02X
|
0.19∼0.04X
|
EF1200mm F5.6L USM(受注生産)
|
0.12∼0.01X
|
0.13∼0.02X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF-S10-22mm F3.5-4.5 USM
|
0.77∼0.58X
|
不可
|
EF-S15-85mm F3.5-5.6 IS USM
|
0.44∼0.15X
|
不可
|
EF-S17-55mm F2.8 IS USM
|
0.45∼0.23X
|
不可
|
EF-S17-85mm F4-5.6 IS USM
|
0.43∼0.14X
|
0.72∼0.33X
|
EF-S18-55mm F3.5-5.6 IS STM
|
0.65∼0.23X
|
1.00∼0.51X
|
EF-S18-55mm F3.5-5.6 USM
|
0.81∼0.23X
|
0.92∼0.51X
|
EF-S18-55mm F3.5-5.6 II USM
|
0.81∼0.23X
|
0.92∼0.51X
|
EF-S18-55mm F3.5-5.6 IS II
|
0.64∼0.23X
|
1.00∼0.51X
|
EF-S18-55mm F3.5-5.6 IS
|
0.64∼0.23X
|
1.00∼0.51X
|
EF-S18-135mm F3.5-5.6 IS STM
|
0.43∼0.09X
|
0.61∼0.21X
|
EF-S18-135mm F3.5-5.6 IS
|
0.38∼0.09X
|
0.59∼0.21X
|
EF-S18-200mm F3.5-5.6 IS
|
0.39∼0.06X
|
0.56∼0.14X
|
EF-S55-250mm F4-5.6 IS STM
|
0.38∼0.05X
|
0.48∼0.11X
|
EF-S55-250mm F4-5.6 IS II
|
0.22∼0.05X
|
0.48∼0.11X
|
EF-S55-250mm F4-5.6 IS
|
0.22∼0.05X
|
0.48∼0.11X
|
EF-S60mmсヱ① F2.8 USM
|
1.28∼0.20X
|
1.61∼0.44X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF16-35mm F2.8L USM
|
0.87∼0.36X
|
1.09∼0.80X
|
EF16-35mm F2.8L II USM
|
0.62∼0.36X
|
1.11∼0.80X
|
EF17-35mm F2.8L USM
|
0.77∼0.36X
|
0.95∼0.80X
|
EF17-40mm F4L USM
|
0.83∼0.32X
|
1.02∼0.70X
|
EF20-35mm F3.5-4.5 USM
|
0.7∼0.36X
|
1∼0.8X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF24-70mm F4L IS USM
|
0.44∼0.18X
|
0.72∼0.40X
|
EF24-70mm F2.8L II USM
|
0.63∼0.18X
|
0.74∼0.41X
|
EF24-70mm F2.8L USM
|
0.63∼0.18X
|
0.75∼0.40X
|
EF24-85mm F3.5-4.5 USM
|
0.59∼0.15X
|
1.23∼0.33X
|
EF24-105mm F4L IS USM
|
0.60∼0.12X
|
0.61∼0.27X
|
EF28-70mm F2.8L USM
|
0.63∼0.18X
|
0.75∼0.40X
|
EF28-90mm F4-5.6 III USM
|
0.56∼0.14X
|
1.13∼0.31X
|
EF28-105mm F3.5-4.5 II USM
|
0.53∼0.12X
|
0.75∼0.27X
|
EF28-105mm F4-5.6 USM
|
0.54∼0.12X
|
1.11∼0.27X
|
EF28-135mm F3.5-5.6 IS USM
|
0.53∼0.09X
|
1.09∼0.21X
|
EF28-200mm F3.5-5.6 USM
|
0.54∼0.06X
|
1.10∼0.14X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF28-300mm F3.5-5.6L IS USM
|
0.5∼0.04X
|
0.5∼0.09X
|
EF35-350mm F3.5-5.6L USM
|
0.43∼0.04X
|
0.82∼0.08X
|
EF55-200mm F4.5-5.6 II USM
|
0.29∼0.06X
|
0.50∼0.14X
|
EF70-200mm F2.8L IS II USM
|
0.28∼0.06X
|
0.42∼0.14X
|
EF70-200mm F2.8L IS USM
|
0.24∼0.06X
|
0.41∼0.14X
|
EF70-200mm F2.8L USM
|
0.22∼0.06X
|
0.41∼0.14X
|
EF70-200mm F4L IS USM
|
0.28∼0.06X
|
0.42∼0.14X
|
EF70-200mm F4L USM
|
0.29∼0.06X
|
0.39∼0.13X
|
EF70-300mm F4.5-5.6 DO IS USM
|
0.26∼0.04X
|
0.46∼0.09X
|
EF70-300mm F4-5.6L IS USM
|
0.287∼0.042X
|
0.472∼0.094X
|
EF70-300mm F4-5.6 IS USM
|
0.32∼0.04X
|
0.40∼0.09X
|
EF75-300mm F4-5.6 IS USM
|
0.31∼0.04X
|
0.39∼0.09X
|
EF90-300mm F4.5-5.6 USM
|
0.31∼0.13X
|
0.39∼0.09X
|
EF100-300mm F4.5-5.6 USM
|
0.26∼0.04X
|
0.37∼0.09X
|
EF100-400mm F4.5-5.6L IS USM
|
0.25∼0.03X
|
0.35∼0.07X
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
EF50mm F2.5ヵ⑦еヱЬсヱ①
|
0.74∼0.24X
|
1.04∼0.54X
|
EF100mm F2.8 сヱ① USM
|
1.19∼0.12X
|
1.39∼0.26X
|
EF100mm F2.8L сヱ① IS USM
|
1.17∼0.12X
|
1.37∼0.27X
|
EF180mm F3.5L сヱ① USM
|
1.09∼0.07X
|
1.21∼0.15X
|
MP-E65mm F2.8 1-5×
сヱ①иルЬ
|
不可
|
不可
|
|
|
搭配 EF12 II時倍率 |
搭配 EF25 II時倍率 |
TS-E17mm F4L
|
不可
|
不可
|
TS-E24mm F3.5L
|
0.62∼0.49X
|
1.21∼1.1X
|
TS-E24mm F3.5L II
|
0.85∼0.51X
|
1.47∼1.12X
|
TS-E45mm F2.8
|
0.44∼0.27X
|
不可
|
TS-E90mm F2.8
|
0.43∼0.14X
|
0.6∼0.31X
|
|
|
1994年成立 
