HJ18ex28B IASE A
The HJ18ex28B IASE A is super telephoto portable EFP lens specifically designed for concerts, special events, documentaries, natural history and other challenging location productions.
Előnyök
- Focal length 500mm (1000mm with extender)
- Weighs only 2.576kg
- Internal focus - minimises chromatic aberrations
- Enhanced Digital Drive technology
- Ecological, robust ergonomic design
Termékjellemzők
A(z) Canon HJ18ex28B IASE A részletesebb megtekintése
Portable super telephoto ENG/EFP lens
The HJ18ex28B IASE A provides the longest focal length in its
class. With an overall length of 176.2mm and a weight of just
2.576kg it requires no mechanical support system to mount to the HD
camera. Aerial shooting (using stabilized gimbals), means sports,
entertainment coverage and portable HD acquisition in arduous
terrain are all superbly supported by this low-weight compact lens.
The HJ18ex28B IASE A can extend to 500mm focal length (and to
1000mm with the extender). It has a very impressive optical speed
of F2.8 up to a focal length of 286mm.
High contrast is ensured by superb control of black reproduction -
with optical and mechanical design innovations that substantially
reduced flare, veiling glare, and any internal reflections. Similar
attention to minimization of ghost images and other
highlight-related chromatic distortions caused by strong light
sources on-axis and off-axis further extend the operational
contrast range of the lens.
Optical Technologies
Power Optics - combination of specialized materials, contemporary
optical design, and multilayer coatings that produce the superb
imagery
Internal Focus - a Canon design innovation that uses a floating
optical system to better control chromatic aberrations
Crossover Technology - switchable operation between 16:9 and 4:3
aspect ratio imagery
Digital Technologies
New third-generation enhanced digital servo systems using
Canon-developed 16-bit optical rotary encoder devices introduce new
creativity to handheld acquisition systems. Enhanced Digital Drive
technology - encompasses a microcomputer driven servo control that
embodies position memory and user-defined digital functionality to
significantly empower the camera operator. A 16-bit rotary encoder
for aperture control reports to the associated camera Iris control
system (10-bit compatibility). Maximum Zoom speed is 0.5 seconds
and Focus is