Originally posted by swanlefitte the 4 lenes I checked adjusted brightness to be almost the same. There are differences. Comments anyone? Whites are almost identical. How?
sigma 70, pentax 77, 50-200dal, nikkor 105 2.5 ai
The Sigma 70 is the coolest and the Pentax 77 the warmest. The Nikkor 105 is the most neutral, but AWB is a factor.
Are you willing to do this again with manual white balance?
In sunlight, set it to daylight/sun, or if you have to use flash, set it the white balance to flash. Turn off any other lights in the room and don't let any natural window light into the room. Shoot with wall, ceiling, carpet, etc, that is as white, black, or neutral gray as possible including your own clothing. And if any of these lenses have filters, take them off. Also best to shoot in RAW as jpegs will be processed and the color balance possibly affected.