Flex-Cable Aperture - Blendenflex
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Background and Identification
The Canon EF 24-105mm F4.0 L IS USM Objektiv is an EF mount wide-to-telephoto zoom lens that was introduced by Canon in October 2005 to complement the 17-40mm f/4L USM and 70-200mm f/4L USM lenses, which were well-regarded. Canon Inc. is a Japanese corporation specializing in optical, imaging, and industrial products such as lenses, cameras, medical equipment, scanners, printers, and semiconductor manufacturing equipment.
For the Canon EF 24-105mm F4.0 L IS USM Objektiv lens, the EF means “electronic focus,” meaning that there is an autofocus motor in the lens itself. All Canon lenses since 1987 have been EF. The L in the name means “expensive as L.” Ultrasonic means USM, which means you may grab the focus ring at any time for instant, silent manual focus override.
The Canon EF 24-105mm F4.0 L IS USM Objektiv is often compared to the other L series zoom of comparable range, the 24-70mm f/2.8L USM. Compared to the 24-70mm f/2.8L USM version, the 24-105mm f/4L IS USM lens loses a full stop but gains image stabilization, stabilizing camera shake up to three stops. The lens also includes rubber gaskets for moisture and dust protection. Weather sealing is only effective if the photographer uses a weather-resistant camera body with the lens. The first 10,000 batch of early-production models of the EF 24-105mm f/4L IS USM had a flare problem and Canon offered to repair them for free.
- Full-frame compatible: Yes
- Image Stabilizer: Yes (3 stops)
- Environmental Sealing: Yes
- Ultrasonic Motor: Yes
- Stepping Motor: No
- L-Series: Yes
- Diffractive Optics: No
- Macro: No
- Zoom Lock Lever: No
- Maximum Aperture: f/4.0
- Minimum Aperture: f/22
- Construction: 13 groups/18 elements
- # of diaphragm blades: 8
- Closest focusing distance: 0.45 m (1.5 ft)
- Max. magnification: 0.23x
- Horizontal viewing angle: 74° - 19° 20′
- Diagonal viewing angle: 84° - 23° 20′
- Vertical viewing angle: 53° - 13°
- Weight: 670 g (24 oz)
- Maximum diameter: 83.5 mm / 3.3"
- Length: 107 mm / 4.2"
- Filter diameter: 77 mm
- Lens Hood: EW-83H
- Case: LP1219
- Release Date:
- Currently in production: No
- MSRP: $1249.00