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<blockquote data-quote="aroy" data-source="post: 313206" data-attributes="member: 16090">There is definitely a halo around the white areas. I examined the image in View NX, and find that there are a lot of blow highlights. The CA may be due to excessive exposure.I then opened the image in Capture NX-D and got rid of the purple fringe using colour aberration under lense correction, but the halo remained. That is due to electrons over flowing after the sensel well is full. The width of the halo gives a fair indication of the amount of over exposure.Examining the image here are my thoughts. exposure is F1.8, 1/4000, ISO 100. The exposure could be reduced by at least 3 stops - in this case F2.8 or F4.. Matrix exposure was used, center weighed would give better exposure control, else when so much white is there try bracketing at -1, -2 and -3 EV to get the optimum exposure.. The width of max brightness (on the sleeve of the arm holding racket) is approximately 10 pixels, about the same as the halo, which points to a massive over exposure.With high DR of the current sensors, It is better to meter so that the brightest portions are not blown. Shadows are easily recovered, but blow highlights are BLOWN and lost.</blockquote>

[QUOTE="aroy, post: 313206, member: 16090"] There is definitely a halo around the white areas. I examined the image in View NX, and find that there are a lot of blow highlights. The CA may be due to excessive exposure. I then opened the image in Capture NX-D and got rid of the purple fringe using colour aberration under lense correction, but the halo remained. That is due to electrons over flowing after the sensel well is full. The width of the halo gives a fair indication of the amount of over exposure. Examining the image here are my thoughts . exposure is F1.8, 1/4000, ISO 100. The exposure could be reduced by at least 3 stops - in this case F2.8 or F4. . Matrix exposure was used, center weighed would give better exposure control, else when so much white is there try bracketing at -1, -2 and -3 EV to get the optimum exposure. . The width of max brightness (on the sleeve of the arm holding racket) is approximately 10 pixels, about the same as the halo, which points to a massive over exposure. With high DR of the current sensors, It is better to meter so that the brightest portions are not blown. Shadows are easily recovered, but blow highlights are BLOWN and lost. [/QUOTE]

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