Tamron 1:5,6 f=300mm (model CT-300) Review
Tamron 1:5,6 f=300mm BBAR MULTI C (Adaptall model CT-300) is a telephoto lens for 35mm cameras. Has Adaptall mount, which allows you to install it on any systems of 70-80s.
Produced from 1976 through 1979. In 1976, the company provided a new line of Tamron lenses with interchangeable mount Adaptall. In 1979, because of the release of a new line, it was replaced by the Model 54B, which had an additional optical aberration correction unit (2 elements), making the new lens harder.
Optical design — 4 elements in 4 groups.
Tamron 1:5,6 f=300mm Specs
Focal length: 300mm
Aperture: f/ 5,6 - f/ 22
Weight (gr): 580
Length (mm): 161
Filter Ø (mm.): 58
Aperture blades: 9
Min. focus distance (m.): 2.5
Tamron 1:5,6 f=300mm Handling and Mechanics
The lens is solidly assembled in a metal barrel. It has a good combination of length-weight. Weight Lens 580 g, it is easier than some 200mm telephoto lenses.
Mount on Nikon SLR camera
The Nikon SLR camera sits well.
The lens with an adapter Adaptall-Nikon F
In the middle, there is a wide focus ring. Rubberized and is pleasant to the touch texture.
At the "infinity" mode
In the position of MFD and elongated hood
]The focusing ring is rotated 180 degrees, while the lens is extended by 16mm. The front lens is rotating. Besides on the bayonet mount has a narrow aperture ring. Also, with rubbered texture. The lens has a retractable hood that extends 3cm. Lens has 9 blackened aperture blades.
Near the aperture ring is a switch "A/M," which switches the manual and automatic iris control. Apparently, you can check the depth of the field.
Such a switch I have seen on the medium format CZJ Sonnar 180 / 2.8. There is also a version of this lens with a silver barrel. In general, I want to mention a convenient and pleasant design lenses Tamron 70-80-years. Says that the director personally supervised the lens design, asset performance aesthetics, and ergonomics in the first place.
Tamron 1:5,6 f=300mm Example Photos
All photos are shooted on the camera Nikon D3100 on the aperture f / 5,6. RAW export without post-processing.
Tamron 1: 5,6 f = 300mm Sharpness
At wide-open lens has portrait sharpness, there is small spherical aberration, but for such focal length, I think the sharpness is quite normal.
When you close the aperture, aberration disappears, and sharpness increases. There is narrow DOF at wide-open, feels like the 100mm at aperture f / 2.8 lens, but to catch the green dot focus; confirmation is more difficult because f / 5.6 is darker.
An example of a wide-open. The distance of about 3 m
Tamron 1: 5,6 f = 300mm Character and Bokeh
A wide-open aperture lens provides beautiful portraits. Spherical aberration adds a touch soft.
Bokeh is also nice. You can catch the soap bubbles in the blur area.
Covering the aperture can capture a large depth of field, airy little lost, but there is greater clarity.
f/ 5.6 It is a good visible depth of field
MFD 2.5m chosen to allow close to the animals. But it's not macro.
The longer the focal length of the lens, the more it compresses space. At the 300mm, focal compression becomes clearly visible. Therefore, distant objects are the subject of getting closer. Also compressed perspective, the usual urban views seem unusual.
Tamron 1: 5,6 f = 300mm Color Render and Contrast
The lens has perfect contrast and saturated colors.
The lights and shadows on the picture are more pronounced; the penumbra has a small dynamic range. Lens will like photographers who love high contrast.
The lens elements have a Tamron BBAR multi-coating, probably one of the first versions, as evidenced by marking “BBAR MULTI C.” For the next line of steel, mark “MC BBAR.”
MFD. f/ 5,6
Tamron 1:5,6 f = 300mm model CT-300 is a good budget 300mm telephoto lens. It attracts with its constructive and ergonomics. Convenient for outdoor shooting on a bright sunny day. Now it is rare on sale.
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