24x36mm

None

	6-group linear zoom (zoom extension: 79.6mm)
	Front of lens barrel moves

Canon EF mount

100-400mm, 1:4.5-5.6

1.8m

Set focus mode switch, operate manual focusing ring (full-time mechanical manual focusing system)

92mm diameter x 189mm, 1360g (prototype weight)

	At 100mm - 0.06x
	At 400mm - 0.20x

	Diagonal (43.2mm) - 24ø-6ø
	Vertical (24mm) - 14ø-3ø
	Horizontal (36mm) - 20ø-5ø

	At 100mm - 393x591
	At 400mm - 119x177

Super spectra coating

77mm diameter, P=0.75mm. (Up to 1 filter attachable)

17 elements in 14 groups (fluorite element for G3, Super UD glass for G7)

8

Pulse control with EMD (enabled simultaneously with AF drive)

Maximum: f/4.5-5.6 (indicator on lens barrel), Minimum: f/32-38 (f/32-40 for lenses featuring 1/3-stop increments

62ø

Ring USM drive

40dB or less (based on Canon's Standard Test Method)

H/0.54 to L/1.67 seconds or shorter (lens drive speed from infinity to minimum focusing distance)

None

	EOS signal transmission, including 5 types of information (including absolute distance information)
	1 - Lens mode
	2 - Lens type
	3 - Metering information
	4 - Focal length
	5 - AF drive information

1.8m to infinity (at all focal lengths)

Provided

Rear-focusing method, with focusing cam operating the floating elements, groups 4 and 6

	Two focusing distance ranges can be set
	1 - 1.8m-infinity
	2 - 6.5m-infinity