Triplet 2.8/78 Review
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"Triplet" is the name of the optical design, which invention in the late XIX century helped reduce the cost of lens production. Accordingly, the spread of photography in general since everyone can afford to buy an inexpensive camera. In the Soviet Union, lenses with the name “Triplet” produced for inexpensive amateur cameras and slide projectors.
There is a whole range of Cooke Triplet design lenses for overhead projectors. What are the most common:
Triplet 2.8 / 75
Triplet 2.8 / 78
Triplet-3 2.8 / 80
Triplet-5 2.8 / 100
Triplet-6 2.8 / 150
Triar-3 2.8 / 85
All of them were produced with different barrel designs and at different factories. So, review the Triplet 2.8/78. There is evidence that this lens conceals an image circle for frame 6x6 cm, but for me, it’s not relevant. I'm going to use it on the DSLR camera with an ASP/C sensor. Mechanically my lens is perfectly assembled in the metal barrel, with a large hood, which protects it from the sidelight. The backside has a long tube with a screw thread; apparently, using it in a slide projector could focus. To mount the Triplet 2.8 / 78 on the camera, it must be adapted.
Triplet 2.8/78 Sample Photos
All photos RAW export without post-processing.
Sharpness
The lens has a soft image due to the spherical aberration. Therefore, it is more inclined to soft-focus lenses.
100% crop of the previous image
Character and Bokeh
The lens has a peculiar character and bokeh.
Out of focused points of light turned into circles.
Luminous points have halos like a magical glow.
Contrast and Color Render
The lens has a normal contrast and well protected from the sidelight of his hood.
Example backlit Yet backlight afraid. If the lens has no constructive blend, it is recommended to do so.
Summary
Triplet 2.8 / 78 is an interesting lens. Suitable for creative ideas. If you want to get interesting bokeh and have no costs for Trioplan 2.8 / 100, try Triplet.
