Tamron 28mm f/ 2.5 (model 02B) Review
Tamron 28 mm f / 2.5 is a fast wide-angle lens for 35 mm cameras. 28mm focal length is sufficient to capture the majority of the overall plans and shots, even for ASP/C sensor cameras. Equivalent focal length for my Nikon D3100 camera with a crop factor of 1.5 is equal to 42mm on a full frame.
Produced since 1979 through 1992, in the manual focusing lens era.
Tamron 28 mm f / 2.5 Adaptall-2 with the genuine Adaptall-2-Nikon mount.
Tamron 28 mm f / 2.5 Adaptall-2 without an adaptor.
The lens has a universal mount Tamron Adaptall-2, whereby with a special adapter can be installed on any system with automatic aperture control.
Tamron 28 mm f/ 2.5 Adaptall-2 model 02B Specs
Focal length: 28 mm
Aperture: f/ 2.5 — f/ 32
Weight (gr): 180
Length without adapter (mm): 33
Filter Ø (mm.): 49
Aperture blades: 5
Min. Focus distance (m.): 0.25
Handling and Mechanics
Handling compactly and conveniently. In general, lens assembled good, metal and glass. No backlash. The front element has a small size, which at first seems strange for wide-angle lenses. But such a small diameter of the first element does not provide strong geometric distortion at the edge of the frame.
Tamron 28 mm f/ 2.5 Sample Photos
All samples snapped on Nikon D3100. RAW export without postprocessing.
Most of the examples for this review shot at f/ 2.5. This suggests that the aperture f/ 2.5 sharp well.
Sharpness in the center of the frame. Crop 100% of the size of the previous frame.
Sharpness on the edge of the frame, 100% crop size. Observed in the f/ 2.5 chromatic aberrations.
In the center of the frame, sharpness is good and slightly weaker at the edge. At aperture f / 4 sharpness at the edges become also good.
Another example of sharpness on the edge of the frame. 100% crop of the next picture.
Distortion for 28 mm lens in the normal range.
On parallel verticals can observe the level of geometric and barrel distortion. Another example: post Socar in the distance strictly perpendicular, while at the extreme poles observed barrel distortion.
Barrel distortion small, and you can shoot people in a close range. but the distortion is still visible, as does the 28 mm.
You can achieve a little effect of perspective.
Character and Bokeh
Due to the small focus bokeh is not very blurry, and the object is not much separated from the background.
f/ 2.5 But at close range, you can get a picture with interesting bokeh.
The lens is multi-coated, have good contrast and generally contrast is good in backlight and sidelight. Has good color characteristic Tamron BBAR coating.
f/ 2.5 In strong backlight catches the flare.
You can not shoot full macro, but a good close-up can be done.
Tamron 28 mm f/ 2.5 Adaptall-2 model 02B in general, a good lens, that it can not expensive to buy. Personally, I like it, they like to shoot. Its small size is well suited for outdoor shooting. And in the bag does not occupy much space.
For street shooting camera can be hung around the neck, focus on infinity and simply press the button without sight and attract too much attention. Just remember that after 5 meters in all field.