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This 180mm telephoto macro lens is capable of close-ups up to 1x. It is ideal for photographing insects and small animals, where a long working distance is desirable. The focusing range can easily be switched between 0.48m/1.6ft. to infinity and 1.5m/4.9ft. to infinity. Use of three UD elements effectively corrects secondary spectrum. Employing an internal floating construction ensures sharp delineation at all subject distances. Since the length of the lens does not change when focusing, there is no need to worry about the lens coming in contact with the subject. The ring-type USM delivers quiet autofocusing. Full-time manual focus is also available. Maximum magnification can be raised to either 1.4x or 2x by using Extender EF 1.4 x II or 2 x II.
| Angle of View | 11°25' . 7°40' . 13°40' |
| Construction | 12-14 |
| No of Diaphragm Blades | 8 |
| Minimum Aperture | 32 |
| Closest Focusing Distance(m/ft) | 0.48/1.6 |
| Maximum Magnification(X) | 1 |
| Drive System | Ring-type USM*1 |
| Distance Scale | o |
| Water/dust-resistance | - |
| Filter Size(mm) | 72 |
| Maximum Diameter x Length(mm/in) | 82.5x186.6/3.3"x7.4" |
| Weight(g/oz) | 1,090/2.4 |
| With Extender EF1.4XII attached | |
| Focal Length(mm) | 252 |
| Maximum aperture(f/) | 4.5~45(5~45)*2 |
| Maximum magnification(x) | 1.4 |
| AF | o *3 |
| IS | - |
| With Extender EF2XII attached | |
| Focal Length(mm) | 360 |
| Maximum aperture(f/) | 6.7~64(7.1~64)*4 |
| Maximum magnification(x) | 2 |
| AF | x |
| IS | - |
| *1 | Equipped with a full-time manual mechanism. |
| *2 | The aperture is for bodies using 1/2-step displays. In the case of 1/3-step displays, the aperture values of some lenses are shown in parentheses. |
| *3 | Autofocus use range is 0.8m to infinity. |
| *4 | Can be only with EOS digital SLR cameras designed to take EF-S lenses. The EF300mm f/2.8L IS USM, EF400mm f/2.8L IS USM, EF400mm f/4 DO IS USM, EF500mm f/4L IS USM, Extender EF1.4xII/EF2xII, EF16-35mm f/2.8L USM, EF17-40mm f/4L, EF24-0mm f/2.8L USM, EF28-30mm f/3.5-5.6L IS USm, EF70-200mm f/2.8L IS USM have a cam ring which improves dust and drip resistance and which may cause slight scratching around the camera mount, but this in no way affects use of either the camera or the lens. When using the Extender EF1.4xII the autofocus drops in speed by approximately one half, and when using the Extender EF2xII, it drops 1/4. |
