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Pictures
Optical design
| Format: 35mm SLR
Type: Zoom lens
Focusing: Manual Focus (MF)
Lens mounts: Tamron Adaptall-2
First year of production: 1979
Last year of production: 1982
Optical design: 13 elements in 11 groups
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Specifications:
| Focal length | Max. aperture | Min. aperture | Blades | Min. Focus (m.) | Filter Ø (mm.) | Weight (gr/oz) | Length (mm/in) |
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| 75mm - 250mm | f/3.8 - f/4.5 | f/32 | 6 | 1.2 | 62 | 870/30,7 | 183/7,2 |
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Additional information:
The Tamron 75-250 mm f/ 3.8-4.5 Adaptall-2 model 04A is a telephoto zoom lens for 35 mm SLR cameras popular in the 1970-90s (via the interchangeable Adaptall-2 mount).
The lens features a push-pull design (focal length is changed by pushing or pulling the focus ring, and in so doing the lens length is changing). It is multicoated. The lens is equipped with a built-in hood. You can see it in the 3rd photo. In order to estimate the lens size it is placed near the Tamron SP 35-80 mm f/ 2.8-3.8 with a fully extended lens barrel.
At a focal length of 250 mm the Tamron 75-250mm f/3.8-4.5 Adaptall-2 model 04A lens is capable of taking 1:3.5 macro scale pictures.
The second variant of the lens (model 104A) has been considerably redesigned and features improved optical characteristics. Outwardly the lens has not changed.
Links to online resources:
Posted by: Nik_SSG Date of publication: 17.07.2011
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