EF-S lens mount
The sensor in APS-C format makes compared to the small picture format for an effective extension factor of 1.6 - establishing a clear advantage for macro photography, because with shorter focal lengths are very large scales easier to implement. The 'S' in the EF-S type designation stands for "short back focus": Due to the smaller image circle closer positioning of the rear lens element to the image sensor of the camera is possible. The white mark on the lens connector distinguishes the lens from other EF lenses, which still retain their traditional red marking. A rear rubber ring prevents damage if it is by mistake, tried to put the lens on a non-EF-S compatible camera.
The lens is constructed of 12 elements in 8 groups. The optical design provides clear detail and high contrast over the entire image field. A built up of three groups internal focusing system allows a constant lens length for focusing the focus ring. This is useful in macro photography where the front lens is usually very close to the subject This is especially true in the interaction with the macro flash systems MT-24EX and MR-14EX, which can be mounted directly onto the lens without any additional accessories.
Fast auto focus
The annularly arranged ultrasonic motors (USM) provide a fast and almost silent autofocus Funktion.Dabei stops the lens precisely the moment in which the correct focus is achieved. The AF control algorithm of the EF-S 60mm 1:2.8 macro USM has been optimized to increase the accuracy and speed. The auto focus can be at any time "passed over" by manual intervention, without the risk of damaging the USM motor.
Circular aperture provides beautiful background defocus
The EMD (Electro Magnetic Diaphragm) Aperture uses an almost perfectly circular Blendenöffnung.Damit can be at maximum aperture to achieve a pleasing, evenly blurred background, so as to highlight the main subject. Thanks to this feature, this lens is also ideal for use in portrait photography, especially since the focal length is ideal for this application.
Optimized Super Spectra lens coating ensures effective suppression of reflections and reflections sind.Spezielle enhanced with digital cameras due to the reflective behavior of the image sensors to observe coatings absorb the light and reduce unwanted reflections on the lens surface. The result is pure, unadulterated digital images with natural color balance.
E-TTL II support for better flash pictures
When shooting with flash in combination with Canon's EX Speedlite flash units a visibly improved flash exposure is erzielt.Der reason: The lens is the distance measurement data to the camera. It is fully compatible with the new E-TTL II flash system of the EOS 20D and EOS 350D.
For an even lower close range and greater image scale, the EF-S 60mm 1:2.8 macro USM can with the Canon extension tubes EF 12 II and EF 25 II expand. Another accessory lens case and lens hood are optional.
In harmony with the environment
In accordance with its strict environmental policies Canon uses only lead-free glass in the optical components of its lenses.