![]() Only the L cone really extends down into deep "red".Both the M and L cones almost completely overlap.In fact, both the M and L cones have peak sensitivity in green, close to each other.The M and L cones are often (albeit inaccurately) called the green and red cones.They have difficulty distinguishing between colors that rely on differential stimulation of the M and L cones.They see the opponent colors yellow/blue. ![]() In short, the vast majority of individuals with Color Vision Deficiency have these characteristics:: But these most common types do see blue, and related colors that stimulate the S cone (blue). ![]() Like most things in perception, CVD is not an absolute, but a wide spectrum of subtle variations from a mild reduction in discrimination ability, to a complete inability to discern between reds and greens for instance (deuteranopia/protanopia). The Blue Cone Monochromacy I created using the Brettel concepts, however the current blue cone simulator does nto also simulate the central field loss or low vision aspects of BCM. You can see various forms of CVD based on clinical research at The protanopia, deuteranopia, and tritanopia simulations are based on the Brettel models which use the cone response functions and are generally accepted as clinically accurate. There is even some discussion regarding taking blue cone monochromacy out of the CVD classification all together.) What is it really like? (For instance, blue cone monochromacy is co-morbid with a low vision of 20/70 and severe photophobia. Only the very rare achromatopsia types are monochromatic, and that very small group often has other more serious vision problems that require assistive technologies, regardless of their lack of color discrimination. Even the most profound deuteranope or protanope can still see hundreds of thousands of colors (far shy of the many millions of normal vision, but not devoid of color perception). They only have a reduced color discrimination. 99.998% of those with CVD are not color blind "Color Blind" is not accurate in terms of what CVD to those with some variation of this condition. However, it is important to know that the vast majority of CVD individuals can still see some colors. Some variation of this condition affects an estimated 6% of the population, primarily males. Even here, different photographic philosophies are already evident among the competitors.CVD is a condition wherein some of the "color sensing" cells of the retina are impaired or missing, resulting in difficulty discriminating between certain colors. ![]() We'll begin with an easy task: portrait photos in daylight. If you don't want to miss out on it, subscribe to the NextPit newsletter, where we will reveal the results next Wednesday morning. You will discover the results of the camera blind test next Wednesday. Thus, there is (probably) a different smartphone behind Photo 1A and Photo 2A. One more thing to take note of before we get started: The picture with the same letter is not always from the same smartphone. These smartphones participate in the NextPit camera blind test: Unless otherwise noted, we took pictures using the factory settings for the camera. To prevent these smartphones from giving themselves away, we removed the EXIF data from the shots and adjusted the slightly different picture angles of the smartphone cameras by cropping them. We then selected the best photo in each case. How does the NextPit camera blind test work?įirst, we photographed each subject three times with each smartphone to avoid any inconsistencies. ![]()
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