Originally posted by Akcelik kmccanta thank you!
i was trying to get DOF preview aperture wide open @ f3.5 and could not see the difference.
stopping the lens revealed the darker VF as you said. now that i see how it works i don't understand the merit of this feature.
thanks for pointing that out.
regards
Its to check the range of focus in your photo. Say you are outside and its very bright forcing you to stop the lens down a fair bit. But you still want to take that portrait photo of your friend. By using the Depth of Field of Preview function, you can see if the background is still blurred out enough to make a good portrait.