Review on Enhance Your 3D Viewing Experience with 50 Pairs of Anaglyph Cardboard Glasses by James Roper

With good red-cyan 3D glasses, the red filter should only let through red light and the cyan filter should only let through green and blue light. This allows you to use color to separate the two halves of a stereo pair and make images appear in color. If you have a red line on a white background, that line should be invisible through the red lens because the white should be the same color as the red line. Meanwhile, green on black should appear black when viewed through a red lens. With these glasses, however, green light passes through both filters. As a result, color anaglyph images do not work. The red line on the white background looks darker than the background because the "red" filter is slightly orange instead of pure red. For the same reason, a green line on a black background appears lighter than the background when viewed through a "red" lens. You can make color anaglyph work with these glasses if your monitor allows you to reduce the amount of green in the glasses. image to about a quarter of full brightness. You know you have the right setting when the image no longer appears doubled when viewed through an orange-red lens. The image has a magenta tint when viewed this way. A green line on a black background appears lighter than the background when viewed through a "red" lens. You can use color anaglyph with these glasses if your monitor allows you to reduce the amount of green in the image to about a quarter of its full intensity. You know you have the right setting when the image no longer appears doubled when viewed through an orange-red lens. The image has a magenta tint when viewed this way. A green line on a black background appears lighter than the background when viewed through a "red" lens. You can use color anaglyph with these glasses if you can use your monitor to reduce the amount of green in the image to about a quarter of its full intensity. You know you have the right setting when the image no longer appears doubled when viewed through an orange-red lens. The image has a magenta tint when viewed this way. that you have the right setting when the image no longer appears double when viewed through an orange-red lens. The image has a magenta tint when viewed this way. A green line on a black background appears lighter than the background when viewed through a "red" lens. You can use color anaglyph with these glasses if you can use your monitor to reduce the amount of green in the image to about a quarter of its full intensity. You know you have the right attitude when the image no longer appears double when viewed through an orange-red lens. The image has a magenta tint when viewed this way. that you have the right setting when the image no longer appears double when viewed through an orange-red lens. The image has a magenta hue as viewed. A green line on a black background appears lighter than the background when viewed through a "red" lens. You can use color anaglyph with these glasses if your monitor allows you to reduce the amount of green in the image to about a quarter of its full intensity. You know you have the right setting when the image no longer appears doubled when viewed through an orange-red lens. The image has a magenta hue as viewed. A green line on a black background appears lighter than the background when viewed through a "red" lens. You can use color anaglyph with these glasses if you can use your monitor to reduce the amount of green in the image to about a quarter of its full intensity. You know you have the right setting when the image no longer appears doubled when viewed through an orange-red lens. The image has a magenta tint when viewed this way. A green line on a black background appears lighter than the background when viewed through a "red" lens. You can use color anaglyph with these glasses, if your monitor can reduce the amount of green in the image to about a quarter of its full intensity. You know you have the right setting when the image no longer appears doubled when viewed through an orange-red lens. The image has a magenta tint when viewed this way.