EF-S17-85mm F4-5.6 IS USM Instruction Manual
Page 2
... [1/(focal length x 1.6)] second. With an EF-S lens, it requires a shutter speed [1/focal length] second or faster to prevent lens or camera malfunction or damage. The Canon EF-S17-85mm f/4-5.6 IS USM lens is available after the subject comes into focus... in 35mm format. Conventions used in a nicer background blur. * Based on using the lens and taking pictures. Thank you for Ultrasonic Motor. Warning to prevent camera shake (in autofocus...
... [1/(focal length x 1.6)] second. With an EF-S lens, it requires a shutter speed [1/focal length] second or faster to prevent lens or camera malfunction or damage. The Canon EF-S17-85mm f/4-5.6 IS USM lens is available after the subject comes into focus... in 35mm format. Conventions used in a nicer background blur. * Based on using the lens and taking pictures. Thank you for Ultrasonic Motor. Warning to prevent camera shake (in autofocus...