- L series optics
- Light and compact
- 4-stop Image Stabilizer
- f/4 throughout the zoom range
- Fluorite and UD lens elements
- Fast autofocus
- Environmental seals
- Super Spectra coatings
- Circular aperture for pleasing background blur
- Soft case and lens hood
The constant f/4 maximum aperture keeps the lens compact and lightweight making it very suitable to travelling with. The Image Stabilizer also means you can forego carrying a tripod for many shots as you can hand hold this lens down to 1/13sec.
At the ‘wide’ end of 70mm, it provides a natural perspective that’s great for portraits. Zooming in towards 200mm provides perspective compression with the telephoto effect to make subjects appear much closer together than they really are. At only 760g, it is easy to carry and quick to handle in fast moving situations.
The constant f/4 maximum aperture ensures you have full control over depth-of-field at all focal lengths and, in conjunction with the four stop Image Stabilizer, allows you to continue shooting even in quite low light situations. The weight of the lens makes it easy to handle even when you need to respond quickly to an erratically moving animal.
With one fluorite lens element and two ultra-low dispersion (UD) elements, the optical arrangement produces high-resolution images with high contrast. To suit the professional nature of the lens, it is sealed against dust and moisture that provides excellent performance even when the weather turns against you. The ring-type USM autofocus motor in the lens provides fast, silent autofocus to allow you to track moving subjects with ease.
When used with an EF1.4x II or EF2x II extender, you can make use of 98-280mm f/5.6 or 140-400mm f/8. If you are using the EOS 3 or any EOS-1 series camera, then autofocus will work with either extender, however, with other non-1 series cameras, autofocus will only work with the EF1.4xII extender.
A ring-type USM autofocus motor means you can focus quickly, near-silently and with precision. It also provides full-time manual focus so that you can adjust the focus with the focus ring, without first having to switch the lens to manual focus. This allows you to adjust the focus accurately to ensure it is exactly where you want it to be for the most creative control possible. This lens also features AF stop buttons to allow you to halt the AF function should you need to.
Featuring a fluorite element and two ultra-low dispersion (UD) elements, the image quality is very high with high contrast and tightly controlled secondary spectrum.