Objektív TAMRON 3,0-8mm
f=3.0mm - 8mm F/1.0
A Half Century of Innovation and Achievement, Tamron the Pioneer of Vari-Focal Lens
The Latest Technologies Packed into a Compact Body
Maximum Enhancement of Camera Performance through Superb Optical Design and a Wide Dynamic Range
Super Dynamic Aperture Range
With an F/1.0 maximum aperture, the brightest in this class, and minimum aperture of F/360, the Tamron 3.0-8mm provides tremendous versatility with its wider dynamic range. This enables optimum surveillance results across a broad range of conditions, from nighttime and indoor locations where light is low to outdoors in broad daylight.
Improved camera performance!
Mounting this lens on a camera with a minimum illumination intensity of 1.0Lux at F/1.4, increases the minimum illumination intensity to O.5Lux.
Comparison with a conventional F/1.4 lens:
At F/1.0 twice the amount of light is obtained.
The Use of Aspherical Lenses Produces High Definition
Aspherical lenses have been utilized to realize high resolution and high contrast throughout the focal range. Particular attention has been paid to definition at the corners of the image, resulting in an increase of approximately 50% in resolution (compared to conventional lenses). At a time when the popularization of digital recorders not subject to image degradation has given rise to a demand for high-resolution lenses, this lens sets a new standard of excellence.
Compact Design
A state-of-the-art optical design employing aspherical lenses and use of a new iris meter have resulted in a remarkable space saving design in spite of the large F/l.O aperture feature.
Expansion of Wide Angle Coverage to f=3.0mm
To increase the ease of use and versatility, we have expanded the wide-angle end of the focal range, a frequently used setting, from f = 3.5 mm to f = 3.0 mm. The telephoto coverage at f = 8.0 mm yields a magnification factor of 2.67x.
Even when the lens is mounted on a 1/4" camera, a horizontal angle of view of 67 degrees at the widest focal length (the equivalent of f = 4 mm angle of view for 1/3" format) is obtained, enabling it to be used as a standard lens.
Multi-Coating
The lenses have been multi-coated to reduce ghosting and flare caused by backlighting, thus ensuring high-contrast images even under such adverse conditions.
Locking Mechanism Built into Each Ring
A locking mechanism has been attached to the zoom, focus, and iris rings (iris lock on manual lens only). Anchoring the rings in place prevents unwanted shifts in the desired settings after the lens has been mounted.
Environmentally-Conscious Design
We have considered environmental impact by selecting glass with no lead content and using lead-free solder.
Built-in Slip Mount Mechanism
A slip mount mechanism allows the lens to be properly positioned on the camera after mounting. For example, the auto-iris meter on the lower part of the lens needs to be rotated to the correct position in order to work properly on the camera. The slip mount ensures that the lens will not rotate completely off the camera during this fine-tuned positioning.
It makes the difference in the image quality, enhancing the camera performance for security and surveillance
- Accomodates 3.0mm wideangle to 8mm medium telephoto with a single lens
- Aspherical lens technology brings high resolving power throughout the entire focal length range
- Compact chassis with a smaller overall dimensions enhances versatility in installation
- Locking mechanism for focusing and zooming secures initial set-up positions
- Minimum aperture of F/360 is made available for auto iris models; DC and video driven
Specification
| 13VM308AS (Manual Iris) | 13VG308AS (DC Auto Iris) | 13VA308AS (Video Auto Iris) | |
| Imager Size | 1/3", 1/4" | ||
| Mount Type | CS | ||
| Focal Length | 3.0 - 8mm | ||
| Aperture Range | 1.0 - Close | 1.0 - 360 | |
| Angle of View (H x V) - 1/3" | Wide 91° x 67° / Tele 36° x 27° | ||
| Angle of View (H x V) - 1/4" | Wide 67° x 49° / Tele 27° x 20° | ||
| Focusing Range | 0.2m - ∞ | ||
| Operation - Focus | Manual (w/Lock) | ||
| Operation - Zoom | Manual (w/Lock) | ||
| Operation - Iris | Manual (w/Lock) | Auto Iris (DC) | Auto Iris (Video) |
| Filter Size | - | ||
| Back Focus (in air) | 8.36mm | ||
| Iris Operating Voltage | - | Open 4V / Close 0.5V | - |
| Input Power (Max. Power Consumption) | - | - | DC8.5 - 16V (50mA) |
| Input Signal | - | - | VS or V Signal |
| A.L.C. | - | - | Average - Peak |
| Weight | 39g | 47g | 50g |
| Operating Temperature | -20 - +60°C | ||