The Canon KH19x6.7 KAS (VCL719BXS) is a Focus Servo Lens for use with HDCX300K and HDCX310K Multi-purpose Cameras only. IMAGE COMPOSITION | KH19x6.7 KAS | Object Image Format | 1/2 Inch 16:9 Aspect Ratio | Object Image Size (Presented to Camera Imagers) | 6.97 mm (H) x 3.92 mm (V) | Zoom Ratio | 19 X | Focal Length Range | 6.7------------127mm | Angular Field of View : | | At 6.7mm | 55.0 degrees (H) x 32.6 degrees (V) | At 127mm | 3.14 degrees (H) x 1.77 degrees (V) | SCENE COMPOSITION KH19x6.7 KAS | | Minimum Object Distance (MOD) (From Front of Lens) | 0.9 Meter (50mm with Macro) | Scene Object Dimensions at MOD | | At 6.7mm | 98.1 cm x 55.2 cm | At 127mm | 8.1 cm x 4.6 cm | OPTICAL BRIGHTNESS KH19x6.7 KAS | | Maximum Relative Aperture | | (F-Number) | | At 6.7mm------96.8mm | 1 : 1.6 | At 127mm (Ramping Characteristic) | 1 : 2.1 | PHYSICAL ATTRIBUTES KH19x6.7 KAS | Size | | | Width | 112mm | 4.4in | Height | 88mm | 3.5in | Length | 171.8mm | 6.8in | Weight | 2.8lbs | 1.27kg | |