[quote name='Frank' timestamp='1326809336' post='14960']
1. The images are sharpened in the Camera. That is, I shoot them in Raw, then use NX2 to save them in jpeg without farther sharpening or de-sharpening. The visual effect of decentering is not affected by the sharpening, right?
2. As I checked the iamges I found that I cannot bring the black part and the white part into the dynamic range simutaneously, i.e., either the black was underexposed or the white was overexposed. So I used some exposure compensation during the shot and as a reault the exposure of the above iamges is sometimes different. I have tried to use the NX2 to bring out the highlight details (but the black details cannot always be recovered). Could the exposure affect the visual effect? Should I lower the contrast of the display before shot?
Thanks,
Frank
[/quote]
1. a softer edge will remain comparatively softer regardless of the sharpening. Please note that this tests is for the center only. If there's an issue here it will be amplified in one (or more) border zone.
2. this is a bit surprising. The exposure should remain roughly constant. Have you used spot metering ? You shouldn't really try to reach 100% white. A light gray tone for the white field is fine.
I'd say that the decentering is not extreme in your sample. Nikon may still respond that this is within factory limits. Remember that no lens is 100% centered anyway. If you have an issue in the field it should be taken care of (I didn't follow the whole thread so maybe you've mentioned this already).
1. The images are sharpened in the Camera. That is, I shoot them in Raw, then use NX2 to save them in jpeg without farther sharpening or de-sharpening. The visual effect of decentering is not affected by the sharpening, right?
2. As I checked the iamges I found that I cannot bring the black part and the white part into the dynamic range simutaneously, i.e., either the black was underexposed or the white was overexposed. So I used some exposure compensation during the shot and as a reault the exposure of the above iamges is sometimes different. I have tried to use the NX2 to bring out the highlight details (but the black details cannot always be recovered). Could the exposure affect the visual effect? Should I lower the contrast of the display before shot?
Thanks,
Frank
[/quote]
1. a softer edge will remain comparatively softer regardless of the sharpening. Please note that this tests is for the center only. If there's an issue here it will be amplified in one (or more) border zone.
2. this is a bit surprising. The exposure should remain roughly constant. Have you used spot metering ? You shouldn't really try to reach 100% white. A light gray tone for the white field is fine.
I'd say that the decentering is not extreme in your sample. Nikon may still respond that this is within factory limits. Remember that no lens is 100% centered anyway. If you have an issue in the field it should be taken care of (I didn't follow the whole thread so maybe you've mentioned this already).