EF / EF-S Lenses - 8 Diaphragm Blades

[USM]

These are the current Canon lenses that have the 8 diaphragm blades. Why 8 diaphragm blades are important? The reason is because it will give you a nicer boken effect. With the recent introduction of the 8 circular diaphragm blades, it will render much better bokeh.


Zoom Lenses

Lens	No. of Diaphragm Blades
EF 28-70mm f2.8L USM	8
EF 24-70mm f2.8L USM	8
EF 24-105mm f4L IS USM	8 (circular aperture)
EF 28-300mm f3.5-5.6L IS USM	8
EF 80-200mm f2.8L	8
EF 70-200mm f4L USM	8
EF 70-200mm f4L IS USM	8 (circular aperture)
EF 70-200mm f2.8L USM	8
EF 70-200mm f2.8L IS USM	8
EF 70-200mm f2.8L IS II USM	8
EF 70-300mm f4-5.6 IS USM	8 (circular aperture)
EF 70-300mm f4-5.6L IS USM	8 (circular aperture)
EF 100-400mm f4.5-5.6L IS USM	8

Prime Lenses

Lens	No. of Diaphragm Blades
TS-E 17mm f4L	8
TS-E 24mm f3.5L II	8
TS-E 45mm f2.8	8
TS-E 90mm f2.8	8
EF 24mm f1.4L II USM	8 (circular aperture)
EF 35mm f1.4L USM	8
EF 50mm f1.4 USM	8
EF 50mm f1.2L USM	8 (circular aperture)
EF-S

[/color] 60mm f2.8 Macro USM[/td]
[td]8[/td][/tr]

[tr][td]EF 85mm f1.8 USM[/td]
[td]8[/td][/tr]

[tr][td]EF 85mm f1.2L USM[/td]
[td]8[/td][/tr]

[tr][td]EF 85mm f1.2L II USM[/td]
[td]8 (circular aperture)[/td][/tr]

[tr][td]EF 100mm f2 USM[/td]
[td]8[/td][/tr]

[tr][td]EF 100mm f2.8 Macro USM[/td]
[td]8[/td][/tr]

[tr][td]EF 135mm f2L USM[/td]
[td]8[/td][/tr]

[tr][td]EF 180mm f3.5L Macro USM[/td]
[td]8[/td][/tr]

[tr][td]EF 200mm f1.8L USM[/td]
[td]8[/td][/tr]

[tr][td]EF 200mm f2L IS USM[/td]
[td]8 (circular aperture)[/td][/tr]

[tr][td]EF 200mm f2.8L USM[/td]
[td]8[/td][/tr]

[tr][td]EF 200mm f2.8L II USM[/td]
[td]8[/td][/tr]

[tr][td]EF 300mm f4L IS USM[/td]
[td]8[/td][/tr]

[tr][td]EF 300mm f2.8L USM[/td]
[td]8[/td][/tr]

[tr][td]EF 300mm f2.8L IS USM[/td]
[td]8[/td][/tr]

[tr][td]EF 400mm f2.8L USM[/td]
[td]8[/td][/tr]

[tr][td]EF 400mm f2.8L II USM[/td]
[td]8[/td][/tr]

[tr][td]EF 400mm f2.8L IS USM[/td]
[td]8[/td][/tr]

[tr][td]EF 400mm f4L DO[/b] IS USM[/td]
[td]8[/td][/tr]

[tr][td]EF 400mm f5.6L USM[/td]
[td]8[/td][/tr]

[tr][td]EF 500mm f4L IS USM[/td]
[td]8[/td][/tr]

[tr][td]EF 600mm f4L IS USM[/td]
[td]8[/td][/tr]

[tr][td]EF 800mm f5.6L IS USM[/td]
[td]8 (circular aperture)[/td][/tr]

[tr][td]EF 1200mm f5.6L IS USM[/td]
[td]8[/td][/tr]


[/table]

[kwanghakiljok]

How about the 17-40 f4L?

[USM]

Jun 29, 2007 17:07:13 GMT 8 kwanghakiljok said:

How about the 17-40 f4L?

EF 17-40mm f4L has only 7 diaphragm blades.