H hmobley Active member Jul 23, 2009 #1 I set up in manual, my focal, iso, etc, using a tamron 3.5 28-300 lens, set it to 3.5 and locked it, I thught, when I went from 28 to 300 mm the focal went to 6.5, how can I lock this, all other settings don't move
I set up in manual, my focal, iso, etc, using a tamron 3.5 28-300 lens, set it to 3.5 and locked it, I thught, when I went from 28 to 300 mm the focal went to 6.5, how can I lock this, all other settings don't move
K Kholi Section Moderator Jul 23, 2009 #2 This lens is not a constant aperture lens. If you want it to remain the same then start it at 6.5 to begin with.
This lens is not a constant aperture lens. If you want it to remain the same then start it at 6.5 to begin with.
