IS USM EF 100mm f/2.8 Macro USM EF-S 60mm f/2.8 Macro USM EF 135mm f/2L USM EF-S 10-22mm f/3.5-4.5 USM EF 180mm f/3.5L Macro USM EF-S 17-55mm f/2.8 IS USM EF 200 mm f /2.8L USM EF- S 17-85mm f/4-5.6
EF- S lenses EF-S 60mm f /2.8 Macro USM EF-S 10-22mm f /3.5-4.5 USM EF- S 15- 85 mm f /3.5- 5.6 IS*(3) EF-S 17-55mm f /2.8 IS USM EF- S 17-85mm f/4-5.6
EF- S lens EF-S 60mm f /2.8 Macro USM EF-S 10-22mm f /3.5-4.5 USM EF-S 15- 85 mm f /3.5- 5.6 IS USM (*3) EF-S 17-55mm f /2.8 IS USM EF- S 17-85mm f/4-5.6
EF- S lenses EF-S 60mm f /2.8 Macro USM EF-S 10-22mm f /3.5-4.5 USM EF- S 15- 85 mm f /3.5- 5.6 IS*(3) EF-S 17-55mm f /2.8 IS USM EF- S 17-85mm f/4-5.6
This would mean that if you were shooting with a 100 mm lens, you would use a minimum shutter speed of approximately 1/100 s . The closest shutter speed to this would typically be 1/125 s.
Ef- S The Super Precision Matte focusing screen is optimized for wide-aperture lenses from f /1.8 thru f /2.8. Areas that are slightly out of focus appear more out of focus, making it easier to tell when focus is right-on. It is ideal for users who frequently use manual focus in dim light with fast lenses.
Canon's EF- S lenses have adopted an optimized optical system and mechanical structure to accommodate an APS-C size sensor that is smaller than a 35 mm full size sensor.