EF70-200mm f/4L USM The ring USM (Ultrasonic Motor) and inner focusing system achieves high-speed silent autofocusing. Manual focusing, even while in AF mode, is possible thanks to full-time manual focusing mechanism. Extenders EF 1.4 X and 2 X can be used with this lens, and the optional Ring Tripod Mount A (W) is being marketed concurrently.
If the batteries do fail, the EF can still be used manually from 1/ 2 - 1/1000 sec. The Variable Aperture AE control will not operate, but you can manually adjust the aperture ring of the lens. A basic exposure guide to follow for bright sunlight (with distinct shadows) is to make a fraction representing the shutter speed needed at f/16 by putting a "one" over the film's ASA rating.
2 . Press the shutter button halfway. About 1 second later, the image stabilizer turns on. Before shooting look through the viewfinder and check that the image stabilizer is operating
To pan a moving subject select MODE 2 . MODE 2 corrects vibrations and shaking only in the direction at right angles to the cameras panning movement Press the shutter button down halfway to check the stabilization
This indicates that the film has left the multi-slot take-up spool. Turn the rewind crank one or two more revolutions to completely rewind the top of the film leader back into the cartridge. The pull up the rewind knob to open the camera back and lift out the cartridge.
Situations where the Image Stabilizer is not effective EF100-400mm F4.5-5.6L IS USM In MODE 1: panning shots where there is considerable camera movement. In MODE 1: shots from vehicles, where there is considerable motion. In MODE 2 : shots other than panning shots.
Lenses that support changes in the AF speed Extender 1.4 x EF-S 10-18mm f/4.5-5.6 IS STM EF -S 15-85mm f/3.5-5.6L IS USM EF-S 18-55mm f/3.5-5.6 IS STM EF-S 18-135mm f/3.5-5.6 IS STM EF-S 55-250mm f/4-5.6
