Difference between revisions of "VI Photo Enlarger"
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Vivitar decided to design their own enlarger that looked to solve the problem of heat reaching the negative, and a gorup of engineers in Inglewood, CA took on the task. Vivitar’s unique solution to the heat problem was to use a “dioptic light source”. The heat from the lamp was effectively insulated by using a "light pipe" made of glass which transmitted the light from the dichroic head to the negative. By having that "light pipe" there were 2 optical components and thus dioptic. The results were very good in regards to heat, but careful alignment was needed to avoid vignetting in larger negatives. | Vivitar decided to design their own enlarger that looked to solve the problem of heat reaching the negative, and a gorup of engineers in Inglewood, CA took on the task. Vivitar’s unique solution to the heat problem was to use a “dioptic light source”. The heat from the lamp was effectively insulated by using a "light pipe" made of glass which transmitted the light from the dichroic head to the negative. By having that "light pipe" there were 2 optical components and thus dioptic. The results were very good in regards to heat, but careful alignment was needed to avoid vignetting in larger negatives. | ||
| + | The condenser head has a 2 fixed and 1 movable condenser to provide optimal uniformity for 50 or 80mm lenses. It uses standard bulbs; which can be replaced with LEDs. VC filter should be placed under the lens. | ||
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| + | The enlarger itself is very tall, with a inclined column of about 1.1m allowing enlargements of 32X (768x1152mm) with a 50mm lens. | ||
| + | The head moves smoothly, and can be tilted +/- 30° and resetting to the normal position is very easy. | ||
The negative carriers were plastic, and had a groove to keep them flat and allow the user to rotate and align. However, since it was a proprietary design, and hand-made was not possible is was not well received. | The negative carriers were plastic, and had a groove to keep them flat and allow the user to rotate and align. However, since it was a proprietary design, and hand-made was not possible is was not well received. | ||
Revision as of 16:44, 12 November 2020
- stub
Vivitar VI was a modular enlarger designed and made by Vivitar from 1978. It could use a monochrome or color head, and cover formats up to 6x9cm
Vivitar decided to design their own enlarger that looked to solve the problem of heat reaching the negative, and a gorup of engineers in Inglewood, CA took on the task. Vivitar’s unique solution to the heat problem was to use a “dioptic light source”. The heat from the lamp was effectively insulated by using a "light pipe" made of glass which transmitted the light from the dichroic head to the negative. By having that "light pipe" there were 2 optical components and thus dioptic. The results were very good in regards to heat, but careful alignment was needed to avoid vignetting in larger negatives. The condenser head has a 2 fixed and 1 movable condenser to provide optimal uniformity for 50 or 80mm lenses. It uses standard bulbs; which can be replaced with LEDs. VC filter should be placed under the lens.
The enlarger itself is very tall, with a inclined column of about 1.1m allowing enlargements of 32X (768x1152mm) with a 50mm lens. The head moves smoothly, and can be tilted +/- 30° and resetting to the normal position is very easy.
The negative carriers were plastic, and had a groove to keep them flat and allow the user to rotate and align. However, since it was a proprietary design, and hand-made was not possible is was not well received.
References
- [Brochure in high quality] by Peter D'Aprix [[1]]
- Modern Photography’s August 1978 review of the Vivitar VI enlarger
- [Ollinger's Guide to Enlargers]
Links
- [[2]] Vivitar Historical Research: Part 2
- [Vivitar review] on Darkroom Photography - Volume 01 Issue 02 (1979-05)(Sheptow Publishing)(US)
