$49.00Last catalog price, September 2008
Catalog description
William Optics 2 Inch Violet Reducer VR Filter, part number WIOP038, is a discontinued product from the 2007–2011 catalog. It was last listed at $49.00, down from a high of $68.00.
The WO VR-1 is a 2 Minus Violet filter that tremendously reduces the effects of chromatic aberration (purple halo and blue glow) that achromatic refractors return on bright objects.
Its particularly suited for color and black & white photography. It works by absorbing light in the violet spectrum (around 400 nm) for more pinpoint APO star views.
Catalog price history
| Observed | Listed price | Change |
|---|---|---|
| September 2007 | $68.00 | |
| September 2008 | $49.00 | −$19.00 |
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