I set the my camera, a D200 on aperture priority.
with AF-S 70-200 VR lens, i noticed there is a slight change in exposure between f/2.8 and f/10.
Tested this against various subjects with different tones, and it is consistently giving a slight change of exposure between apertures.
Changed to a AF 35mm f/2 lens, it results the same way.
Changed to a AF-s 12-24mm f/4, it is the same.
I loaded test pictures into nikon capture and observe the histogram, indeed there is a slight shift to the right for the smaller aperture.
I shifted the exposure compensation to mimick similar exposure and it is roughly around 0.10 EV difference between apertures.
I am not sure if this is a problem or it is meant to be this way?
I didn't do such test on my D70...
can some bros advise?
thanks
with AF-S 70-200 VR lens, i noticed there is a slight change in exposure between f/2.8 and f/10.
Tested this against various subjects with different tones, and it is consistently giving a slight change of exposure between apertures.
Changed to a AF 35mm f/2 lens, it results the same way.
Changed to a AF-s 12-24mm f/4, it is the same.
I loaded test pictures into nikon capture and observe the histogram, indeed there is a slight shift to the right for the smaller aperture.
I shifted the exposure compensation to mimick similar exposure and it is roughly around 0.10 EV difference between apertures.
I am not sure if this is a problem or it is meant to be this way?
I didn't do such test on my D70...
can some bros advise?
thanks