cgb2955
BALLC_4B_IMG2135_lightened
This image was lightened in Lightroom to show detail. Specific Lightroom adjustment values are Exposure +2.26 and Clarity +50 This should be the image created with more shots of the flash for each arrangement, or a larger f-stop (e.g., f/10), or a higher ISO (e.g., ISO 500). Changes in exposure time should have a negligible effect, since the image was shot in almost complete darkness.
This image is a demonstration of my third test of additive color. This image is the result of placing white cardstock, a small white rectangle, and a black circle in a random arrangement on top of black velvet for one flash of the flash unit with a color gel attached.The items were rearranged a few times, with a different gel used for each arrangement. Each gel was used once. There was no attempt to create a specific composition. The purpose of the black circle was to create a black hole (no color) in order to negate the color added by the gel being flashed.
Setup: A large rectangle of black velvet was laid flat on the floor, and an arrangement of objects was laid on top of the velvet. The camera shutter was opened. An external flash unit with a blue gel was fired once from a height of approximately 30 inches. The objects were rearranged. The flash was fired again, this time with a red gel. The objects were rearranged again. The flash was fired for a third time with a green gel. The camera shutter was closed.
The three secondary colors are visible at the overlaps of pairs of the three primary colors. The color white is seen at the overlap of all three primary colors.. The circles represent a negation of color: note that the circle surrounded by cyan contains both blue and magenta.
The gels used were Rogue Lighting Filters Just Blue (f-stop loss 2 1/3), Bright Red (f-stop loss 3 1/2)., and Moss Green (f-stop loss 1 1/2).. The flash unit used was a Yongnuo YN-568EX II 4-Channel TTL Flash Speedlite for Canon E-TTL/E-TTL II Cameras. A flash unit was used to provide more control over the amount of light to be supplied. Its output is more measurable and repeatable than a flashlight timed by a human.
I believe that this image proves by example that a light source together with three color gels (representing the three primary additive colors) applied as a long exposure in low (no) light can create a set of 8 colors suitable for light painting as photographic art. The 8 colors are red, green, blue, yellow, cyan, magenta, white, and black (as the absence of all color). I call this set the basic light crayon box.
Additional work is needed to fine tune the camera aperture value (and possibly the ISO value) and the use of the flash unit (e.g., distance from objects, flash output settings, number of flashes) to achieve this brightness in camera.
BALLC_4B_IMG2135_lightened
This image was lightened in Lightroom to show detail. Specific Lightroom adjustment values are Exposure +2.26 and Clarity +50 This should be the image created with more shots of the flash for each arrangement, or a larger f-stop (e.g., f/10), or a higher ISO (e.g., ISO 500). Changes in exposure time should have a negligible effect, since the image was shot in almost complete darkness.
This image is a demonstration of my third test of additive color. This image is the result of placing white cardstock, a small white rectangle, and a black circle in a random arrangement on top of black velvet for one flash of the flash unit with a color gel attached.The items were rearranged a few times, with a different gel used for each arrangement. Each gel was used once. There was no attempt to create a specific composition. The purpose of the black circle was to create a black hole (no color) in order to negate the color added by the gel being flashed.
Setup: A large rectangle of black velvet was laid flat on the floor, and an arrangement of objects was laid on top of the velvet. The camera shutter was opened. An external flash unit with a blue gel was fired once from a height of approximately 30 inches. The objects were rearranged. The flash was fired again, this time with a red gel. The objects were rearranged again. The flash was fired for a third time with a green gel. The camera shutter was closed.
The three secondary colors are visible at the overlaps of pairs of the three primary colors. The color white is seen at the overlap of all three primary colors.. The circles represent a negation of color: note that the circle surrounded by cyan contains both blue and magenta.
The gels used were Rogue Lighting Filters Just Blue (f-stop loss 2 1/3), Bright Red (f-stop loss 3 1/2)., and Moss Green (f-stop loss 1 1/2).. The flash unit used was a Yongnuo YN-568EX II 4-Channel TTL Flash Speedlite for Canon E-TTL/E-TTL II Cameras. A flash unit was used to provide more control over the amount of light to be supplied. Its output is more measurable and repeatable than a flashlight timed by a human.
I believe that this image proves by example that a light source together with three color gels (representing the three primary additive colors) applied as a long exposure in low (no) light can create a set of 8 colors suitable for light painting as photographic art. The 8 colors are red, green, blue, yellow, cyan, magenta, white, and black (as the absence of all color). I call this set the basic light crayon box.
Additional work is needed to fine tune the camera aperture value (and possibly the ISO value) and the use of the flash unit (e.g., distance from objects, flash output settings, number of flashes) to achieve this brightness in camera.