Image size:

24x36mm

Macro feature:

None

Lens mount type:

Canon EF mount

Focal length, aperture ratio:

35mm, 1:1.4

Minimum focusing distance:

0.3m

Manual focusing:

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

Dimensions and weight:

79mm diameter x 86mm, 580g (prototype weight)

Magnification:

0.18x

Angle of view at infinity:

Field:

206x136mm

Coating:

Super spectra coating

Filter size:

72mm diameter, P=0.75mm. Single filter capacity

Lens configuration:

11 elements in 9 groups (1 polished aspherical surface for G9R2)

Aperture blades:

8

Aperture control:

Pulse control with EMD (enabled simultaneously with AF drive)

Aperture value/indicator:

Open: f/1.4 (indicator on lens barrel), Minimum: f/22 (same for lenses featuring 1/3-stop increments

Rotation angle, lens extension:

67ø, group 2 extension 5.05mm, group 3 extension 6.4mm

Drive system:

Ring USM drive

Drive noise:

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

Drive speed:

H and L: 0.5 seconds (lens drive speed from infinity to minimum focusing distance, lens-only drive speed)

Depth of field markings:

Provided

Signal transmission:

Focusing range:

0.3m to infinity

Infrared index:

Provided

Focusing extension mechanism:

Rear-focusing method, with focusing cam operating the floating elements, groups 2 and 3